UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

☒ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2019

or

☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from           to

Commission File Number: 001‑38090

SOLARIS OILFIELD INFRASTRUCTURE, INC.

(Exact name of registrant as specified in its charter)

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the Registrant is a well‑known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☐    No ☒

Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐    No ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒  No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒  No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b‑2 of the Exchange Act.

If an emerging growth company indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨☒

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b‑2 of the Exchange Act). Yes ☐ No  ☒

Aggregate market value of the voting and non‑voting common equity held by non‑affiliates of Registrant as of June 30, 2019:  $467,029,613

As of February 14, 2020, the registrant had 30,218,896 shares of Class A common stock, $0.01 par value per share, and 15,939,169 shares of Class B common stock, $0.00 par value per share, outstanding.  

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the definitive proxy statement relating to the Registrant’s 2019 Annual Meeting of Shareholders are incorporated by reference into Part III of this Annual Report on Form 10-K.

SOLARIS OILFIELD INFRASTRUCTURE, INC.

TABLE OF CONTENTS

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K (this “Annual Report”) includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Statements that are predictive in nature, that depend upon or refer to future events or conditions or that include the words "believe," "expect," "anticipate," "intend," "estimate" and other expressions that are predictions of or indicate future events and trends and that do not relate to historical matters identify forward-looking statements. Our forward-looking statements include statements about our business strategy, our industry, our future profitability, our expected capital expenditures and the impact of such expenditures on our performance, the costs of being a publicly traded corporation and our capital programs.

A forward-looking statement may include a statement of the assumptions or bases underlying the forward-looking statement. We believe that we have chosen these assumptions or bases in good faith and that they are reasonable. You are cautioned not to place undue reliance on any forward-looking statements. You should also understand that it is not possible to predict or identify all such factors and should not consider the following list to be a complete statement of all potential risks and uncertainties. Factors that could cause our actual results to differ materially from the results contemplated by such forward-looking statements include:

All forward-looking statements speak only as of the date of this Annual Report. You should not place undue reliance on our forward-looking statements. Although forward-looking statements reflect our good faith beliefs at the time they are made, forward-looking statements involve known and unknown risks, uncertainties and other factors, including the factors described under "Risk Factors," which may cause our actual results, performance or achievements to differ materially from anticipated future results, performance or achievements expressed or implied by such forward-looking statements. We undertake no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events, changed circumstances or otherwise, unless required by law.

PART 1

You should read this entire report carefully, including the risks described under Part 1, Item 1A. Risk Factors and our consolidated financial statements and the notes to those consolidated financial statements included elsewhere in this Annual Report. Except as otherwise indicated or required by the context, all references in this Annual Report to the "Company," "Solaris," "we," "us" and "our" refer to (i) Solaris Oilfield Infrastructure, LLC ("Solaris LLC") and its consolidated subsidiaries prior to the completion of our initial public offering and (ii) Solaris Oilfield Infrastructure, Inc. ("Solaris Inc.") and its consolidated subsidiaries following the completion of our initial public offering, unless we state otherwise or the context otherwise requires.

Item 1.      Business

Our Predecessor and Solaris

Solaris LLC was formed in July 2014. Solaris Inc. was incorporated as a Delaware corporation in February 2017 for the purpose of completing an initial public offering of equity in May 2017 (the "IPO" or the "Offering") and related transactions. On May 11, 2017, in connection with the IPO, Solaris Inc. became a holding company whose sole material asset consists of units in Solaris LLC ("Solaris LLC Units"). Solaris Inc. became the managing member of Solaris LLC and is responsible for all operational, management and administrative decisions relating to Solaris LLC's business and consolidates the financial results of Solaris LLC and its subsidiaries.

Overview

We design, manufacture and rent specialized equipment which combined with field technician support, logistics services and our software solutions, enables us to provide a service offering that helps oil and natural gas operators and their suppliers to drive efficiencies and reduce costs during the completion phase of well development. The majority of our revenue is currently derived from rental and services related to our patented mobile proppant and chemical management systems that unload, store and deliver proppant and chemicals used in the hydraulic fracturing of oil and natural gas wells, as well as coordinating the delivery of proppant and chemicals to the well site. Our systems are deployed in most of the active oil and natural gas basins in the United States, including the Permian Basin, Eagle Ford Shale, SCOOP/STACK formations, Haynesville Shale, Rockies, Marcellus and Utica Shales and Bakken formation.

In 2018 and 2019, we introduced new equipment and service enhancements, which we believe will help us maintain and expand our total revenue opportunity in the United States completions space. We introduced our mobile chemical management system to the market in late 2018 and we began commercializing the offering in 2019. Design enhancements to our mobile proppant system include our AutoHopper™ technology, which automates the delivery of proppant into the blender, and the latest version of our Solaris Lens® software, which is available on our systems and allows customers to view the entire last mile proppant supply chain in real time.

Organizational Structure

Solaris Inc. was incorporated in February 2017 for the purpose of completing an initial public offering and related transactions. Our IPO was completed on May 17, 2017. 

In connection with the closing of the IPO, Solaris Inc. became the managing member of Solaris LLC and is responsible for all operational, management and administrative decisions relating to Solaris LLC's business. Solaris Inc. consolidates the financial results of Solaris LLC and its subsidiaries and reports non-controlling interest related to the portion of the Solaris LLC Units not owned by Solaris Inc., which reduces  net income (loss) attributable to the holders of Solaris Inc.’s Class A common stock. As of December 31, 2019, Solaris Inc. owned 66% of Solaris LLC.

Each share of Class B common stock has no economic rights but entitles its holder to one vote on all matters to be voted on by stockholders generally. Holders of Class A common stock and Class B common stock vote together as a single class on all matters presented to our stockholders for their vote or approval, except as otherwise required by

applicable law or by our amended and restated certificate of incorporation. We do not intend to list our Class B common stock on any exchange.

In connection with the IPO, Solaris Inc. entered into a Tax Receivable Agreement (the “Tax Receivable Agreement”) with each member of Solaris LLC immediately prior to the IPO (collectively, the “Original Investors”) (each such person and any permitted transferee, a “TRA Holder,” and together, the “TRA Holders”) on May 17, 2017. The Tax Receivable Agreement generally provides for the payment by Solaris Inc. to each TRA Holder of 85% of the net cash savings, if any, in United States federal, state and local income tax and franchise tax that Solaris Inc. actually realizes (computed using simplifying assumptions to address the impact of state and local taxes) or is deemed to realize in certain circumstances in periods after the IPO as a result of (i) certain increases in tax basis that occur as a result of Solaris Inc.’s acquisition (or deemed acquisition for United States federal income tax purposes) of all or a portion of such TRA Holder’s Solaris LLC Units in connection with the IPO or pursuant to the exercise of the Redemption Right or the Call Right (each as defined in Solaris LLC’s Second Amended and Restated Limited Liability Company Agreement (the “Solaris LLC Agreement”)) and (ii) imputed interest deemed to be paid by Solaris Inc. as a result of, and additional tax basis arising from, any payments Solaris Inc. makes under the Tax Receivable Agreement. Solaris Inc. will retain the benefit of the remaining 15% of these cash savings. For additional information regarding the Tax Receivable Agreement, see Item 1A. “Risk Factors—Risks Related to Our Class A Common Stock.”

The following diagram indicates our simplified ownership structure as of February 18, 2020. This chart is provided for illustrative purposes only and does not represent all legal entities affiliated with us.

(1) Includes certain investment funds managed by Yorktown Partners LLC (“Yorktown”), certain of our officers and directors and the other members of Solaris LLC.

Our History

We were formed in 2014 in connection with the purchase of two proppant management systems from Loadcraft Industries, Ltd. (“Loadcraft Industries”), the original manufacturer of the systems, under an exclusive marketing

arrangement. In September 2014, we acquired Loadcraft Industries' proppant management system manufacturing business, including a manufacturing facility located in Early, Texas, and commenced our manufacturing operations.

Since our inception in 2014,  we have grown our fleet of proppant management systems from two systems to 166 systems, improved the capabilities of our systems and developed and acquired additional product and service offerings.

Products and Services

We provide several products and services designed to increase efficiency, ensure reliable supply and reduce logistical costs to deliver and manage proppant and chemicals used during the completion phase of oil and gas well development. Our primary offerings include:

Manufacturing

We manufacture our systems in our facility in Early, Texas (the “Early Facility”). Early is located in central Texas, which provides convenient access to several of our most active operating areas, including the Permian Basin, the Eagle

Ford Shale, the SCOOP/STACK formations and the Haynesville Shale. Our manufacturing process involves cutting, rolling and welding steel and assembly and testing of our systems. We have historically outsourced and may continue to outsource the manufacturing of certain components of our products in order to optimize our manufacturing capacity. When necessary, we also perform major repairs and overhauls of our systems in the Early Facility. We believe our Early Facility is a competitive advantage that provides us with a greater ability to control manufacturing costs, as well as additional supply chain and quality security and research and development capabilities.

Kingfisher Facility

The Kingfisher Facility is located central to the SCOOP/STACK plays and is capable of servicing multiple large volume customers. The Kingfisher Facility has over 45,000 feet of rail track and 30,000 tons of proppant storage in six silos with individual capacity of 5,000 tons per silo. The Kingfisher Facility services manifest and unit-trains and provides high efficiency silo and direct rail-to-truck transloading, in addition to forward staging storage. See our discussion of the Kingfisher Facility in Item 7. “—Management’s Discussion and Analysis of Financial Condition and Results of Operations”.

Raw Materials and Key Suppliers

The primary raw materials used in the manufacturing of our equipment are steel in the form of plate, bar stock and square and round tubing. We purchase steel and most other raw materials and components on the open market and rely on third parties for providing certain materials, including axles, motors and generators. We believe that we will be able to obtain an adequate supply of raw materials and finished goods to meet our manufacturing requirements because these items are generally available from multiple sources. However, prices for such raw materials and finished goods can fluctuate widely and represent a significant portion of the cost of manufacturing. Accordingly, our cost of revenue and capital costs may be affected by changes in the market price or disruptions in the availability of raw materials, components and sourced finished goods.

We work with third-party suppliers to both transport equipment and materials and provide certain materials used in the manufacturing and maintenance of our systems. During the year ended December 31, 2019,  one supplier, Automatize Logistics, LLC., accounted for approximately 19%, respectively, of our total spending. During the year ended December 31, 2018, two suppliers, BWJ Metalworks LLC and Heil Trailer International Co., accounted for approximately 13% and 11%, respectively, of our total spending. During the year ended December 31, 2017, no supplier accounted for more than 10% of our total spending.    

Our Customers and Contracts

Our primary customers are major E&P and oilfield service companies. We generally execute master service agreements ("MSAs") with our customers. Generally, the MSAs govern the relationship with our customers with specific work performed under individual work orders. For the year ended December 31, 2019,  Devon Energy Corporation and ProPetro Services, Inc., accounted for approximately 19% and 10%, respectively, of our total revenue. For the year ended December 31, 2018, EOG Resources, Inc., ProPetro Holding Corp. and BJ Services, LLC, accounted for approximately 15%, 10% and 10%, respectively, of our total revenue. For the year ended December 31, 2017, EOG Resources Inc., ProPetro Holding Corp., Schlumberger Technology Corporation and Devon Energy Corporation accounted for approximately 23%,15%, 13% and 11%, respectively, of our total revenue.

Competition

The oil and natural gas services industry is highly competitive. Please read Item 1A. "Risk Factors—Risks Related to Our Business—We face significant competition that may impede our ability to gain market share or cause us to lose market share or that could make adoption of new product offerings difficult." There are numerous large and small services companies in all regions of the United States with whom we compete. We face competition from proppant and chemical producers and proppant and chemical transporters who also offer solutions for unloading, storing and delivering proppant and chemicals at well sites and also from competitors who are focused on developing more efficient proppant and chemical logistic solutions. Our main competitors include U.S. Silica, Proppant Express Solutions, LLC, Hi-Crush Partners LP, National Oilwell Varco, Inc., CIG Logistics, OmniTRAX, Inc., Smart Sand Inc., Sand Revolution

LLC, Total Sand Solution and Hoover Ferguson Group, Inc. We also face competition from pressure pumping, logistics and sand companies that own their own proppant and chemical handling equipment. Many of these companies may be customers of ours on certain jobs while also utilizing their own equipment on other jobs.

We believe that we are well positioned competitively due to our existing market share, patent-protected technology, unique service offerings, low cost of operation, strong balance sheet and operational track record. The most important factors on which we compete are product and service quality, performance, reliability and price. Demand for our systems and services and the prices that we will be able to obtain for our systems and services, are closely linked to proppant and chemical consumption patterns for the completion of oil and natural gas wells in North America. These consumption patterns are influenced by numerous factors, including the price for hydrocarbons, the drilling rig count and hydraulic fracturing activity, including the number and rate of stages completed and the amount of proppant or chemical used per stage. Further, these consumption patterns are also influenced by the location, quality, price and availability of proppant and chemicals.

Seasonality

Our business is not significantly impacted by seasonality, although our fourth quarter activity has historically been impacted by holidays and our clients’ budget cycles,  during which we may experience declines in our operating results.

In addition, we provide our proppant and chemical systems and services to E&P companies operating in oil and natural gas producing basins where severe weather conditions may curtail drilling activities and, as a result, impact our revenues generated from those regions. For a discussion of the impact of weather on our operations, please read “Risk Factors—Seasonal weather conditions and natural disasters could severely disrupt normal operations and harm our business.”

Environmental and Occupational Health and Safety Regulations

Our business operations are subject to stringent federal, tribal, regional, state and local laws and regulations governing occupational health and safety, the discharge of materials into the environment and environmental protection.  Numerous governmental entities, including the U.S. Environmental Protection Agency (“EPA”), the U.S. Occupational Safety and Health Administration ("OSHA") and analogous state agencies, have the power to enforce compliance with these laws and regulations and the permits issued under them, often requiring difficult and costly actions, including the incurrence of potentially significant capital or operating expenditures to mitigate or prevent releases of materials from our equipment, facilities or from customer locations where we provide products and services. These laws and regulations may, among other things require the acquisition of permits to conduct regulated activities; restrict the types, quantities and concentration of various substances that can be released into the environment; require remedial measures to mitigate pollution from former and ongoing operations; impose specific safety and health criteria addressing worker protection; and impose substantial liabilities for pollution resulting from operations and support services.

The more significant of these existing environmental and occupational health and safety laws and regulations include the following U.S. legal standards, as amended from time to time:

Additionally, there exist regional, state and local jurisdictions in the United States where we operate that also have, or are developing or considering developing, similar environmental and occupational health and safety laws and regulations governing many of these same types of activities. While the legal requirements imposed in state and local jurisdictions may be similar in form to federal laws and regulations, in some cases the actual implementation of these requirements may impose additional, or more stringent, conditions or controls that can significantly restrict, delay or cancel the permitting, development or expansion of a project or substantially increase the cost of doing business. Additionally, our operations may require state-law based permits in addition to federal permits, requiring state agencies to consider a range of issues, many the same as federal agencies, including, among other things, a project's impact on wildlife and their habitats, historic and archaeological sites, aesthetics, agricultural operations, and scenic areas. Our existing operations as well as the development of new sites also are subject to a variety of local environmental and regulatory requirements, including land use, zoning, building and transportation requirements.  Moreover, whether at the federal, tribal, regional, state and local levels, environmental and occupational health and safety laws and regulations, including new or amended legal requirements that may arise in the future to address potential environmental concerns such as air and water impacts or to address perceived health or safety-related concerns such as oil and natural gas development in close proximity to specific occupied structures and/or certain environmentally-sensitive or recreational areas, are expected to continue to have a considerable impact on the demand for our systems and services.

These environmental and occupational health and safety laws and regulations generally restrict the level of pollutants emitted to ambient air, discharges to surface water, and disposals or other releases to surface and below-ground soils and ground-water. Failure to comply with these laws and regulations may result in the assessment of sanctions, including administrative, civil, and criminal penalties; the imposition of investigatory, remedial, and corrective action obligations or the incurrence of capital expenditures; the occurrence of restrictions, delays or cancellations in the permitting, development or expansion of projects; and the issuance of injunctions restricting or prohibiting some or all of our activities in a particular area. In particular, under certain circumstances, environmental agencies may delay or refuse to grant required approvals or cancel or amend existing permits or leases that may relate to our customers' operations, in which event such operations may be interrupted or suspended for varying lengths of time, causing a reduced demand for our products and services, an associated loss of revenue to us and adversely affecting our results of operations in support of those customers. Additionally, multiple environmental laws provide for citizen suits, which allow private parties, including environmental organizations, to act in place of the government and sue operators for alleged violations of environmental law. See Risk Factors under Part I, Item 1A of this Form 10-K for further discussion on environmental laws and regulations, including with respect to hydraulic fracturing; induced seismicity regulatory developments; ozone standards, site remediation; climate change, including methane or other GHG emissions; and other regulations relating to environmental protection and occupational health and safety. The ultimate financial

impact arising from environmental laws and regulations is neither clearly known nor determinable as existing standards are subject to change and new standards or more stringent enforcement programs continue to evolve.

We have incurred and will continue to incur operating and capital expenditures, some of which may be material, to comply with environmental and occupational health and safety laws and regulations. The trend in environmental regulation is to place more restrictions on activities that may affect the environment and, thus, any new laws and regulations, amendment of existing laws and regulations, reinterpretation of legal requirements or increased governmental enforcement that result in more stringent and costly pollution control equipment, the occurrence of restrictions, delays or cancellations in the permitting or performance of projects, or waste handling, storage, transport, disposal or remediation requirements could have a material adverse effect on our operations and financial position. Historically, our environmental compliance costs have not had a material adverse effect on our results of operations; however, there can be no assurance that such costs will not be material in the future or that such future compliance will not have a material adverse effect on our business and operational results.  It is possible that other developments, such as stricter and more comprehensive environmental and occupational health and safety laws and regulations, claims for personal injuries to persons or damages to natural resources and property, or disruption of our customers' operations resulting from our actions or omissions, and imposition of penalties due to our operations could have a material adverse effect on us and our results of operations.

Intellectual Property

We continuously seek to innovate our product and service offerings to improve our operations and deliver increased value to our customers. Our engineering team is focused on continuing to enhance the capabilities of our systems, increasing our product and service offerings and improving our manufacturing operations. In addition, our software team is constantly designing and building increased software capabilities to enable efficient supply chain planning and management for our customers. We believe our investment in research and development will result in the development of complementary products and services, which will provide a competitive advantage as our customers focus on extracting oil and natural gas in the most economical and efficient ways possible.

We seek patent and trademark protections for our technology when we deem it prudent, and we aggressively pursue protection of these rights. We believe our patents, trademarks, and other protections for our proprietary technologies are adequate for the conduct of our business and that no single patent or trademark is critical to our business. In addition, we rely to a great extent on the technical expertise and know-how of our personnel to maintain our competitive position, and we take commercially reasonable measures to protect trade secrets and other confidential and/or proprietary information relating to the technologies we develop.

As of December 31, 2019, we had four issued patents in the United States, four corollary patents issued in Canada and two corollary patents issued in Mexico; three utility patent applications in the United States, two in Canada, and one in Mexico; and three provisional patent applications in the United States. Each patent and patent application relates to our systems and services and other technologies. Our issued patents expire, if all of the maintenance fees are paid, between 2032 and 2033. We cannot assure you that any of our patent applications will result in the issuance of a patent, or whether the examination process will require us to narrow our claims. In addition, any patents may be contested, circumvented, found unenforceable or invalid, and we may not be able to prevent third parties from infringing them.

Legal Proceedings

Due to the nature of our business, we may become, from time to time, involved in routine litigation or subject to disputes or claims related to our business activities. In the opinion of our management, there are no pending litigation, disputes or claims against us which, if decided adversely, would have a material adverse effect on our financial condition, cash flows or results of operations.

Employees

As of December 31, 2019, we  employed 245 people pursuant to an Administrative Services Agreement. None of our employees are subject to collective bargaining agreements. We consider our employee relations to be good.

Available Information

We are required to file any annual, quarterly and current reports, proxy statements and certain other information with the Securities and Exchange Commission (the “SEC”).  

The SEC maintains a website at www.sec.gov that contains reports, proxy and information statements and other information regarding registrants that file electronically with the SEC. Any documents filed by us with the SEC, including this Annual Report, can be downloaded from the SEC's website.

Our principal executive offices are located at 9811 Katy Freeway, Suite 700, Houston, Texas 77024, and our telephone number is (281) 501-3070. Our website is at www.solarisoilfield.com. Our periodic reports and other information filed with or furnished to the SEC, pursuant to Section 13(a) or 15(d) of the Exchange Act, including Annual Reports on Form 10-K and 10-K/A, quarterly reports on Form 10-Q and Form 10-Q/A, current reports on Form 8-K, and amendments to those reports are available, free of charge, through our website, as soon as reasonably practicable after those reports and other information are electronically filed with or furnished to the SEC. Information on our website or any other website is not incorporated by reference into this Annual Report and does not constitute a part of this Annual Report.

Item 1A.        Risk Factors

The following are certain risk factors that affect our business, financial condition, results of operations and cash flows. Many of these risks are beyond our control. These risk factors should be considered in connection with evaluating the forward-looking statements contained in this Annual Report. The risks and uncertainties described below are not the only ones that we face. If any of the events described below were to actually occur, our business, financial condition, results of operations and cash flows could be adversely affected and our results could differ materially from expected and historical results, any of which may also adversely affect the holders of our stock.

Risks Related to Our Business

Our business depends on domestic capital spending by the oil and natural gas industry, and reductions in capital spending could have a material adverse effect on our liquidity, results of operations and financial condition.

Our business is directly affected by capital spending to explore for, develop and produce oil and natural gas in the United States. The oil and natural gas industry is cyclical and historically has experienced periodic downturns in activity. The significant decline in oil and natural gas prices that began in late 2014 caused a reduction in the exploration, development and production activities of most of our customers. In response, we reduced the prices we charged for our systems. If oil and natural gas prices decline below current levels for an extended period of time, certain of our customers may be unable to pay their vendors and service providers, including us, as a result of the decline in commodity prices. Reduced activity in our areas of operation as a result of decreased capital spending may also have a negative long-term impact on our business, even in an environment of stronger oil and natural gas prices. Any of these conditions or events could adversely affect our operating results. If the recent recovery does not continue or our customers fail to further increase their capital spending, it could have a material adverse effect on our liquidity, results of operations and financial condition.

Industry conditions are influenced by numerous factors over which we have no control, including:

The volatility of oil and natural gas prices may adversely affect the demand for our systems, products and services, and negatively impact our results of operations.

The demand for our products and services is primarily determined by current and anticipated oil and natural gas prices and the related levels of capital spending and drilling activity in the areas in which we have operations. Volatility or weakness in oil prices or natural gas prices (or the perception that oil prices or natural gas prices will decrease or remain stagnant) affects the spending patterns of our customers and may result in the drilling of fewer new wells. As a result, demand for proppants or chemicals may decrease, which could, in turn, lead to lower demand for our products and services and may cause lower prices and lower utilization of our assets. We have, and may in the future, experienced significant fluctuations in operating results as a result of the reactions of our customers to changes in oil and natural gas prices. For example, prolonged low commodity prices experienced by the oil and natural gas industry beginning in late 2014 and uncertainty about future prices even when prices increased, combined with adverse changes in the capital and credit markets, caused many E&P companies to significantly reduce their capital budgets and drilling activity in recent years. This resulted in a significant decline in demand for oilfield services and adversely impacted the prices oilfield services companies could charge for their services.

Prices for oil and natural gas historically have been extremely volatile and are expected to continue to be volatile. During the past five years, the posted West Texas Intermediate ("WTI") price for oil has ranged from a low of $26.21 per barrel ("Bbl") in February 2016 to a high of $77.41 per Bbl in June 2018. During 2018 and 2019, WTI prices ranged from $44.48 to $77.41 per Bbl. If the prices of oil and natural gas continue to be volatile and reverse their recent increases or decline, our operations, financial condition, cash flows and level of expenditures may be materially and adversely affected.

We face significant competition that may impede our ability to gain market share or cause us to lose market share, or that could make adoption of new product offerings or services difficult.

The market for supply chain management and well site logistic services is becoming increasingly competitive. We face competition from proppant producers, pressure pumping companies, transloaders and proppant transporters who also offer solutions for unloading, storing and delivering proppant at well sites and also from competitors who, like us, are focused on developing more efficient last mile logistics management solutions. Some of these solutions utilize containers for on-site proppant storage and handling delivery, while others use silo-based storage as we do. Some of our competitors have greater financial and other resources than we do and may develop technology superior to ours or more cost-effective than ours. Competition in our industry and for our products is thus based on price, consistency and quality of products, distribution capability, customer service, reliability of supply, breadth of product offering and technical support. If our competitors are able to respond to industry conditions or trends more rapidly or effectively or resort to price competition, or if we are unable to gain market acceptance of new product offerings, we may be unable to gain or maintain our market share or may lose market share or operating profit, which could have an adverse effect on our business, results of operations and financial condition.

Technological advancements in well service products and technologies, including those that reduce the amount of proppant or chemicals required for hydraulic fracturing operations, could have a material adverse effect on our business, financial condition and results of operations.

Our industry is characterized by rapid and significant technological advancements and introductions of new products and services using new technologies. As competitors and others use or develop new technologies, or technologies comparable to ours, in the future, we may lose market share or be placed at a competitive disadvantage. Further, we may face competitive pressure to implement or acquire certain new technologies at a substantial cost. Some of our competitors may have greater financial, technical and personnel resources than we do, which may allow them to gain technological advantages or implement new technologies more rapidly than us. Additionally, we may be unable to implement new technologies or services at all, on a timely basis or at an acceptable cost. New technology or changes in our customers' well completion designs could also reduce the demand for proppant or chemicals or the amount of proppant or chemicals required for hydraulic fracturing activities, thereby reducing or eliminating the need for our systems and services. Limits on our ability to effectively use, implement or adapt to new technologies may have a material adverse effect on our business, financial condition and results of operations.

We may be adversely affected by uncertainty in the global financial markets and the deterioration of the financial condition of our customers.

Our future results may be impacted by the uncertainty caused by an economic downturn, volatility or deterioration in the debt and equity capital markets, inflation, deflation or other adverse economic conditions that may negatively affect us or parties with whom we do business resulting in a reduction in our customers' spending and their non-payment or inability to perform obligations owed to us, such as the failure of customers to honor their commitments or the failure of major suppliers to complete orders. Additionally, during times when the natural gas or crude oil markets weaken, our customers are more likely to experience financial difficulties, including being unable to access debt or equity financing, which could result in a reduction in our customers' spending for our systems and services. In addition, in the course of our business we hold accounts receivable from our customers. In the event of the financial distress or bankruptcy of a customer, we could lose all or a portion of such outstanding accounts receivable associated with that customer. Further, if a customer was to enter into bankruptcy, it could also result in the cancellation of all or a portion of our service contracts with such customer at significant expense or loss of expected revenues to us.

Reliance upon a few large customers may adversely affect our revenue and operating results.

During the years ended December 31, 2019 and 2018, our top three customers collectively represented approximately 39% and 35%, respectively, of our consolidated revenue. It is likely that we will continue to derive a significant portion of our revenue from a relatively small number of customers in the future. If a major customer fails to pay us, revenue would be impacted and our operating results and financial condition could be materially harmed. Additionally, we typically do not enter into long-term contractual agreements with our customers and if we were to lose any material customer, we may not be able to redeploy our equipment at similar utilization or pricing levels or within a short period of time and such loss could have a material adverse effect on our business until the equipment is redeployed at similar utilization or pricing levels.

The Kingfisher Facility currently operates under spot contracts without any commitments for future business. We may not be able to obtain long-term contracts with customers for contracted volumes on favorable terms, or at all, which could adversely affect our financial results.

The Kingfisher Facility currently operates with its customers on a spot, uncommitted basis. Our ability to enter into additional contracts with customers or add additional customer contracts on a long-term committed basis is subject to a number of factors, many of which are beyond our control. Any failure to obtain customers at the Kingfisher Facility or the loss of all or a portion of the revenues attributable to our existing customers as a result of competition, creditworthiness, inability to negotiate extensions or replacement of contracts or otherwise, could have a material adverse effect on our business, financial condition, prospects or results of operations.

We are exposed to the credit risk of our customers, and any material nonpayment or nonperformance by our customers could adversely affect our financial results.

We are subject to the risk of loss resulting from nonpayment or nonperformance by our customers, many of whose operations are concentrated solely in the domestic E&P industry which, as described above, is subject to volatility and, therefore, credit risk. Our credit procedures and policies may not be adequate to fully reduce customer credit risk. If we are unable to adequately assess the creditworthiness of existing or future customers or unanticipated deterioration in their creditworthiness, any resulting increase in nonpayment or nonperformance by them and our inability to re-market or otherwise use our equipment could have a material adverse effect on our business, financial condition, prospects or results of operations.

If we are unable to fully protect our intellectual property rights, we may suffer a loss in our competitive advantage or market share.

Our commercial success depends on our patented and proprietary information and technologies, know-how and other intellectual property. Because of the technical nature of our business, we rely on a combination of patent, copyright, trademark and trade secret laws, and restrictions on disclosure to protect our intellectual property. In particular, as of December 31, 2019, we had three patents issued with respect to our mobile proppant management

system design and one patent issued with respect to the lifting and lowering mechanism utilized by our systems to erect and lower their silos. We also have four pending utility patent applications and three provisional patent applications. We customarily enter into confidentiality or license agreements with our employees, consultants and corporate partners and control access to and distribution of our design information, documentation and other patented and proprietary information. In addition, in the future we may acquire additional patents or patent portfolios, which could require significant cash expenditures. However, third parties may knowingly or unknowingly infringe our patent or other proprietary rights, third parties may challenge patents or proprietary rights held by us, and pending and future trademark and patent applications may not be approved. Failure to protect, monitor and control the use of our existing intellectual property rights could cause us to lose our competitive advantage and incur significant expenses. It is possible that our competitors or others could independently develop the same or similar technologies or otherwise obtain access to our unpatented technologies. In such case, our trade secrets would not prevent third parties from competing with us. Consequently, our results of operations may be adversely affected. Furthermore, third parties or our employees may infringe or misappropriate our patented or proprietary technologies or other intellectual property rights, which could also harm our business and results of operations. Policing unauthorized use of intellectual property rights can be difficult and expensive, and adequate remedies may not be available.

We may be adversely affected by disputes regarding intellectual property rights of third parties.

Third parties from time to time may initiate litigation against us by asserting that the conduct of our business infringes, misappropriates or otherwise violates intellectual property rights. We may not prevail in any such legal proceedings related to such claims, and our systems may be found to infringe, impair, misappropriate, dilute or otherwise violate the intellectual property rights of others. If we are sued for infringement and lose, we could be required to pay substantial damages and/or be enjoined from using or selling the infringing products or technology. Any legal proceeding concerning intellectual property could be protracted and costly regardless of the merits of any claim and is inherently unpredictable and could have a material adverse effect on our financial condition, regardless of its outcome.

If we were to discover that our technologies or products infringe valid intellectual property rights of third parties, we may need to obtain licenses from these parties or substantially re-engineer our products in order to avoid infringement. We may not be able to obtain the necessary licenses on acceptable terms, or at all, or be able to re-engineer our products successfully. If our inability to obtain required licenses for our technologies or products prevents us from selling our products, that could adversely impact our financial condition and results of operations.

Additionally, we currently license certain third-party intellectual property in connection with our business, and the loss of any such license could adversely impact our financial condition and results of operations.

Our business is subject to inherent risks some of which are beyond our control. These risks may be self-insured or may not be fully covered under our insurance policies.

Our assets and operations may be affected by natural or man-made disasters and other external events such as extreme weather events that may disrupt our business, including manufacturing and field operations. These hazards can also cause personal injury and loss of life, severe damage to and destruction of property and equipment, pollution or environmental damage, and suspension or cancellation of operations. In addition, our operations are subject to, and exposed to, employee/employer liabilities and risks such as wrongful termination, discrimination, labor organizing, retaliation claims and general human resource related matters.

The occurrence of a significant event or adverse claim in excess of the insurance coverage that we maintain or that is not covered by insurance could have a material adverse effect on our liquidity, results of operations and financial condition. Claims for loss of oil and natural gas production and damage to formations can occur in our industry. Litigation arising from a catastrophic occurrence at a location where our systems are deployed or services are provided may result in our being named as a defendant in lawsuits asserting large claims.

We do not have insurance against all foreseeable risks, either because insurance is not available or because of the high premium costs. The occurrence of an event not fully insured against or the failure of an insurer to meet its insurance obligations could result in substantial losses. In addition, we may not be able to maintain adequate insurance in the future at rates we consider reasonable. Insurance may not be available to cover any or all of the risks to which we are subject,

or, even if available, it may be inadequate, or insurance premiums or other costs could rise significantly in the future so as to make such insurance prohibitively expensive.

Our assets require capital for maintenance, upgrades and refurbishment and may require significant capital expenditures for new equipment.

Our systems and facilities require capital investment in maintenance, upgrades and refurbishment to maintain their competitiveness. The costs of components and labor have increased in the past and may increase in the future with increases in demand, which will require us to incur additional costs to upgrade our facilities or any systems we may manufacture in the future. Any maintenance, upgrade or refurbishment project for our assets could increase our indebtedness or reduce cash available for other opportunities. Furthermore, such projects may require proportionally greater capital investments as a percentage of total asset value, which may make such projects difficult to finance on acceptable terms. To the extent we are unable to fund such projects, we may have less equipment available for service or our equipment may not be attractive to potential or current customers. Additionally, competition or advances in technology within our industry may require us to update or replace existing facilities or systems or build or acquire new ones. Such demands on our capital or reductions in demand for our products and services and the increase in cost of labor necessary for such maintenance and improvement, in each case, could have a material adverse effect on our business, liquidity position, financial condition, prospects and results of operations and may increase our costs.

We rely on a limited number of third-party manufacturers to supplement our internal production capacity during periods of peak demand, and delays in deliveries of any outsourced components or increases in the cost of such outsourced components could harm our business, results of operations and financial condition.

We have established relationships with a limited number of manufacturers that fabricate certain components of our systems during periods of peak demand to supplement our internal production capacity. Should any of these third-party manufacturers be unable to provide or otherwise fail to deliver such components in a timely manner and in the quantities and at the quality required, any resulting delays in the provision of such components could have a material adverse effect on our business, results of operations and financial condition. Additionally, increasing costs of manufacturing such outsourced components may negatively impact demand for our systems or the profitability of our business operations.

We currently rely on a limited number of suppliers for certain equipment and materials to build and maintain our systems, and our reliance on a limited number of suppliers for such equipment and materials exposes us to risks including price and timing of delivery.

We currently rely on a limited number of suppliers for equipment and materials to build and maintain our systems. If demand for our systems or the components necessary to build and maintain such systems increases or our suppliers for our equipment face financial distress or bankruptcy, our suppliers may not be able to provide such equipment on schedule at the current price or at all. In particular, steel is the principal raw material used in the manufacture of our systems, and the price of steel has historically fluctuated on a cyclical basis and has often depended on a variety of factors over which we have no control. Additionally, we depend on a limited number of suppliers for the motors that we use in our systems, which are a critical component. If our suppliers are unable to provide the raw materials and components needed to build and maintain our systems at the current price or at all, we could be required to seek other suppliers for the raw materials and components needed to build, maintain and operate our systems, which may adversely affect our revenues or increase our costs. Any inability to find alternative components at prices or with quality specifications similar to those deployed today could result in delays or a loss of customers.

Our business depends on our customers having access to an adequate supply of proppant to meet their needs.

There have been historical shortages of proppant during various periods. Because our business depends upon the availability of proppant to our customers, any future proppant shortages could decrease the demand for our products and services and have a material adverse effect on our operations, prospects and financial condition.

Changes in the transportation industry, including fluctuations in transportation costs, changes in the way in which proppant or chemicals are transported to the well site or the availability or reliability of transportation to supply our proppant or chemical management systems and transloading services,  could impair the ability of our customers to take delivery of proppant or chemicals or make our products and services less attractive and thereby adversely impact our business.

Disruption of proppant or chemical transportation services due to shortages of rail cars or trucks, extreme weather-related events including rising sea levels, flooding and drought, accidents, mechanical difficulties, strikes, lockouts, bottlenecks, more stringent railcar or safety regulatory initiatives, or other events could temporarily impair the ability of our customers to take delivery of proppant or chemicals at the well site or our ability to provide transloading services. Accordingly, if there are disruptions of the services utilized by our customers (whether these services are provided by us or a third party), including but not limited to disruptions in the rail industry or a shortage of qualified motor carriers, and they are unable to find alternative transportation providers to transport proppant or chemicals to the well site, our business could be adversely affected. Additionally, alternative transportation methods for transporting and delivering proppant or chemicals to the well site could make our product offerings less attractive than those of our competitors and affect our results of operations.

Additionally, any disruptions in transportation services associated with delivery of our proppant or chemical management systems, or provision of last mile services, could result in reduced revenue associated with such systems or services, or the loss of customers.

A number of our customers operate in urban areas, which could increase the costs of deploying our systems and/or decrease the demand for our systems.

A number of our current and potential customers operate in urban areas, which could disproportionately expose them to operational and regulatory risk in that area. For example, operations within the city limits of various municipalities in Colorado may involve additional expenses as a result of changes in state law during 2019 that elevated the authority and regulatory oversight that local communities may exercise with respect to oil and gas developmental activities in the state, including expenses relating to limitations placed on operating hours or mitigation of noise, odor and light that may be emitted during operation. In addition, we and our customers may experience a higher rate of litigation or increased insurance and other costs related to operating in such highly populated areas.

We may have difficulty managing growth of our business, which could adversely affect our financial condition and results of operations.

Growth of our business could place a significant strain on our financial, technical, operational and management resources. As we expand the scope of our activities and our geographic coverage through organic growth, there will be additional demands on our financial, technical, operational and management resources. The failure to continue to upgrade our technical, administrative, operating and financial control systems or the occurrences of unexpected expansion difficulties, including the failure to recruit and retain experienced managers, engineers and other professionals in the oilfield services industry, could have a material adverse effect on our business, financial condition, results of operations and our ability to successfully or timely execute our business plan.

Federal, state and local legislative and regulatory initiatives relating to hydraulic fracturing as well as governmental reviews of such activities may serve to limit future oil and natural gas exploration and production activities and could have a material adverse effect on our results of operations and business.

Hydraulic fracturing is an important and commonly used process for the completion of oil and natural gas wells in targeted subsurface formations with low permeability, such as shale formations, and involves the pressurized injection of water, sand or other proppants and chemical additives into rock formations to stimulate oil and natural gas production. We do not conduct hydraulic fracturing but we manufacture specialized equipment that, combined with field products and well site storage and management of proppant and chemicals used by hydraulic fracturing operators in the oil and natural gas industry. In addition, we are able to provide transloading and other logistics services for our customers.

Hydraulic fracturing is an important and common practice that is typically regulated by state oil and natural gas commissions or similar agencies. However, the practice continues to be controversial in certain parts of the country, resulting in increased scrutiny and regulations of the fracturing process, including by federal agencies that has resulted in the assertion of regulatory authority or performance of investigations over certain aspects of the hydraulic fracturing process. For example, the EPA has asserted regulatory authority pursuant to the SDWA Underground Injection Control program over hydraulic fracturing activities involving the use of diesel and issued guidance covering such activities, as well as published an Advanced Notice of Proposed Rulemaking regarding Toxic Substances Control Act reporting of the chemical substances and mixtures used in hydraulic fracturing.  The EPA also published final rules under the CAA in 2012 and in 2016 governing performance standards, including standards for the capture of air emissions released during oil and natural gas hydraulic fracturing.  Additionally, in 2016, the EPA published an effluent limit guideline final rule prohibiting the discharge of wastewater from onshore unconventional oil and natural gas extraction facilities to publicly owned wastewater treatment plants. Also, in late 2016, the EPA released its final report on the potential impacts of hydraulic fracturing on drinking water resources, concluding that "water cycle" activities associated with hydraulic fracturing may impact drinking water resources under some circumstances.

Legislation has been introduced in United States Congress from time to time to provide for federal regulation of hydraulic fracturing and to require disclosure of the chemicals used in the hydraulic fracturing process but, to date, such legislation has not been adopted. Also, some states and local governments have adopted, and other governmental entities have, from time to time, considered adopting, regulations that could impose more stringent permitting, disclosure and well-construction requirements on hydraulic fracturing operations, including states where we or our customers operate. For example, in April 2019, the Governor of Colorado signed Senate Bill 19-181 into law, which legislation, among other things, revises the mission of the state oil and gas agency from fostering energy development in the state to instead focusing on regulating the oil and natural gas industry in a manner that is protective of public health and safety and the environment, as well as authorizing cities and counties to regulate oil and natural gas operations within their jurisdiction as they do other developments. Among other things, the Colorado oil and gas agency will consider enhanced safety and environmental protections during well development operations, including drilling and hydraulic fracturing activities.   States could also elect to place prohibitions on hydraulic fracturing altogether, following the approach taken by the States of Maryland, New York and Vermont. Local governments may also seek to adopt ordinances within their jurisdictions regulating the time, place or manner of drilling activities in general or hydraulic fracturing activities in particular.

Moreover, our customers typically dispose of flowback and produced water or certain other oilfield fluids gathered from oil and natural gas producing operations in underground disposal wells. This disposal process has been linked to increased induced seismicity events in certain areas of the country, particularly in Oklahoma, Texas, Colorado, Kansas, New Mexico and Arkansas. These and other states have begun to consider or adopt laws and regulations that may restrict or otherwise prohibit oilfield fluid disposal in certain areas or underground disposal wells, and state agencies implementing these requirements may issue orders directing certain wells where seismic incidents have occurred to restrict or suspend disposal well operations or impose standards related to disposal well construction and monitoring. Any one or more of these developments may result in our customers having to limit disposal well volumes, disposal rates or locations, or require our customers or third party disposal well operators that are used by our customers to cease disposal well activities, which developments could adversely affect our customers' business and result in a corresponding decrease in the need for our systems and services, which could have a material adverse effect on our business, financial condition, and results of operations.

Additionally, non-governmental organizations may seek to restrict hydraulic fracturing, as has been the case in Colorado in recent years, when certain interest groups therein have, thus far, unsuccessfully pursued ballot initiatives in recent general election cycles that, had they been successful, would have revised the state constitution or state statutes in a manner that would have made exploration and production activities in the state more difficult or costly in the future including, for example, by increasing mandatory setback distances of oil and natural gas operations, including hydraulic fracturing, from specific occupied structures and/or certain environmentally sensitive or recreational areas. Notwithstanding the adoption of Colorado Senate Bill 19-181 in 2019, one or more interest groups in the state have already filed new ballot initiatives with the state in January 2020, in hopes of extending drilling setbacks from oil and natural gas development.

Increased regulation and attention given to the hydraulic fracturing process and associated processes could lead to greater opposition to, and litigation concerning, oil and natural gas production activities using hydraulic fracturing techniques. Additional legislation or regulation could also lead to operational delays for our customers or increased operating costs in the production of oil and natural gas, including from developing shale plays, or could make it more difficult for our customers to perform hydraulic fracturing. The adoption of any federal, state or local laws or ballot initiatives, or the implementation of any regulations, regarding hydraulic fracturing could potentially cause a decrease in the completion of new oil and natural gas wells and an associated decrease in demand for our products and services and increased compliance costs and time, which could have a material adverse effect on our liquidity, results of operations, and financial condition.

Finally, water is an essential component of shale oil and natural gas production during both the drilling and hydraulic fracturing processes. Our customers' access to water to be used in these processes may be adversely affected due to reasons such as periods of extended drought, private, third party competition for water in localized areas or the implementation of local or state governmental programs to monitor or restrict the beneficial use of water subject to their jurisdiction for hydraulic fracturing to assure adequate local water supplies. Our customers' inability to locate or contractually acquire and sustain the receipt of sufficient amounts of water could adversely impact their exploration and production operations and have a corresponding adverse effect on our business, results of operations and financial condition.

Changes in transportation regulations may increase our costs and negatively impact our results of operations.

We are subject to various transportation regulations, including as a motor carrier by the United States Department of Transportation and by various federal, state and tribal agencies, whose regulations include certain permit requirements of highway and safety authorities. These regulatory authorities exercise broad powers over our trucking operations, generally governing such matters as the authorization to engage in motor carrier operations, safety, equipment testing, driver requirements and specifications and insurance requirements. The trucking industry is subject to possible regulatory and legislative changes that may impact our operations, such as changes in fuel emissions limits, hours of service regulations that govern the amount of time a driver may drive or work in any specific period and limits on vehicle weight and size. As the federal government continues to develop and propose regulations relating to fuel quality, engine efficiency and GHG emissions, we may experience an increase in costs related to truck purchases and maintenance, impairment of equipment productivity, a decrease in the residual value of vehicles, unpredictable fluctuations in fuel prices and an increase in operating expenses. Increased truck traffic may contribute to deteriorating road conditions in some areas where our operations are performed. Our operations, including routing and weight restrictions, could be affected by road construction, road repairs, detours and state and local regulations and ordinances restricting access to certain roads. Proposals to increase federal, state or local taxes, including taxes on motor fuels, are also made from time to time, and any such increase would increase our operating costs. Also, state and local regulation of permitted routes and times on specific roadways could adversely affect our operations. We cannot predict whether, or in what form, any legislative or regulatory changes or municipal ordinances applicable to our logistics operations will be enacted and to what extent any such legislation or regulations could increase our costs or otherwise adversely affect our business or operations.

We are subject to environmental and occupational health and safety laws and regulations that may expose us to significant costs and liabilities.

Our operations and the operations of our customers are subject to stringent federal, tribal, regional, state and local laws and regulations governing worker health and safety, protection of the environment, including natural resources, and the management, transportation and disposal of wastes and other materials. We could be exposed to liabilities for cleanup costs, natural resource damages, and other damages under these laws and regulations, with certain of these legal requirements imposing strict liability for such damages and costs, even though our conduct was lawful at the time it occurred or the conduct resulting in such damage and costs were caused by prior operators or other third-parties. 

Environmental laws and regulations in the United States and in foreign countries are subject to change in the future, possibly resulting in more stringent legal requirements. If existing regulatory requirements or enforcement policies change or new regulatory or enforcement initiatives are developed and implemented in the future, we or our oil and

natural gas exploration and production customers may be required to make significant, unanticipated capital and operating expenditures. Examples of recent environmental regulations include the following:

Compliance with these regulations or other laws, regulations and regulatory initiatives, or any other new environmental and occupational health and safety legal requirements could, among other things, require us or our customers to install new or modified emission controls on equipment or processes, incur longer permitting timelines, and incur significantly increased capital or operating expenditures, which costs may be significant. Additionally, one or more of these developments could reduce demand for our products and services. Moreover, any failure by us to comply with applicable environmental laws and regulations may result in governmental authorities taking actions against our business that could adversely impact our operations and financial condition. See “Business” – “Environmental and Occupational Health and Safety Regulation” under Part I, Item 1 of this Form 10 K for further discussion on environmental matters.

An accidental release of materials into the environment, such as from our mobile chemical management systems, may cause us to incur significant costs and liabilities.

Our business activities present risks of incurring significant environmental costs and liabilities, including costs and liabilities resulting from our management, transportation and disposal of regulated materials, such as oilfield and other wastes, because of air emissions and wastewater discharges related to our operations, and due to historical oilfield industry operations and waste disposal practices. In addition, private parties, including the owners of properties upon which we conduct operations and facilities where our wastes are taken for reclamation or disposal, also may have the right to pursue legal actions to enforce compliance as well as to seek damages for non-compliance with environmental laws and regulations or for personal injury or property or natural resource damages. We could incur significant costs and liabilities in the clean-up of our, our customers’ or third-party sites. Some environmental laws and regulations may impose strict liability, which means that in some situations we could be exposed to liability as a result of our conduct that was lawful at the time it occurred or the conduct of, or conditions caused by, prior operators or other third parties. Remedial costs and other damages arising as a result of environmental laws and costs associated with changes in environmental laws and regulations could be substantial and could have a material adverse effect on our liquidity, results of operations and financial condition.

Laws and regulations protecting the environment generally have become more stringent in recent years and are expected to continue to do so, which could lead to material increases in costs for future environmental compliance and remediation. Changes in existing laws or regulations, or the adoption of new laws or regulations, could delay or curtail exploratory or developmental drilling for oil and natural gas and could have a corresponding adverse effect on us by reducing the demand for our products and services. We may not be able to recover some or any of our costs of compliance with these laws and regulations from insurance. We may not be able to recover some or any of these costs from insurance. Additionally, we may not be able to recover some or any of these costs from sources of contractual indemnity or insurance, as pollution and similar environmental risks generally are not insurable or fully insurable, either because such insurance is not available or because of the high premium costs and deductibles associated with obtaining such insurance.

Silica-related legislation, health issues and litigation could have a material adverse effect on our business, reputation or results of operations.

We are subject to laws and regulations relating to human exposure to crystalline silica. For example, in 2016, OSHA published a final rule that established a more stringent permissible exposure limit for exposure to respirable crystalline silica and provided other provisions to protect employees, such as requirements for exposure assessments, methods for controlling exposure, respiratory protection, medical surveillance, hazard communication, and recording. The 2016 rule further requires compliance with engineering control obligations to limit exposures to respirable crystalline silica in connection with hydraulic fracturing activities by June 2021. Federal and state regulatory authorities, including OSHA, and analogous state agencies may continue to propose changes in their regulations regarding workplace exposure to crystalline silica, such as permissible exposure limits and required controls and personal protective equipment and we can provide no assurance that we will be able to comply with any future laws and regulations relating to exposure to crystalline silica that are adopted, or that the costs of complying with such future laws and regulations would not have a material adverse effect on our operating results by requiring us to modify or cease our operations.

In addition, the inhalation of respirable crystalline silica is associated with the lung disease silicosis. There is evidence of an association between crystalline silica exposure or silicosis and lung cancer and a possible association with other diseases, including immune system disorders such as scleroderma. These health risks have been, and may continue to be, a significant issue confronting the hydraulic fracturing industry. Concerns over silicosis and other potential adverse health effects, as well as concerns regarding potential liability from the use of hydraulic fracture sand, may have the effect of discouraging our customers' use of hydraulic fracture sand. The actual or perceived health risks of handling hydraulic fracture sand could materially and adversely affect hydraulic fracturing service providers, including us, through reduced use of hydraulic fracture sand, the threat of product liability or the filing of lawsuits naming us as a defendant, increased scrutiny by federal, state and local regulatory authorities of us and our customers or reduced financing sources available to the hydraulic fracturing industry.

Anti-indemnity provisions enacted by many states may restrict or prohibit a party's indemnification of us.

We typically enter into agreements with our customers governing the use and operation of our systems and services, which usually include certain indemnification provisions for losses resulting from operations. Such agreements may require each party to indemnify the other against certain claims regardless of the negligence or other fault of the indemnified party; however, many states place limitations on contractual indemnity agreements, particularly agreements that indemnify a party against the consequences of its own negligence. Furthermore, certain states, including Louisiana, New Mexico, Texas and Wyoming have enacted statutes generally referred to as "oilfield anti-indemnity acts" expressly prohibiting certain indemnity agreements contained in or related to oilfield services agreements. Such anti-indemnity acts may restrict or void a party's indemnification of us, which could have a material adverse effect on our business, financial condition, prospects and results of operations.

Fuel conservation measures could reduce demand for oil and natural gas which would in turn reduce the demand for our systems and services.

Fuel conservation measures, alternative fuel requirements and increasing consumer demand for alternatives to oil and natural gas could reduce demand for oil and natural gas. The impact of the changing demand for oil and natural gas may have a material adverse effect on our business, financial condition, prospects, results of operations and cash flows. Additionally, the increased competitiveness of alternative energy sources (such as wind, solar geothermal, tidal, and biofuels) could reduce demand for hydrocarbons and therefore for our systems and services, which would lead to a reduction in our revenues.

Unsatisfactory safety performance may negatively affect our customer relationships and, to the extent we fail to retain existing customers or attract new customers, adversely impact our revenues.

Our ability to retain existing customers and attract new business is dependent on many factors, including our ability to demonstrate that we can reliably and safely operate our business in a manner that is consistent with applicable laws, rules and permits, which legal requirements are subject to change. Existing and potential customers consider the safety record of their third-party service providers to be of high importance in their decision to engage such providers. If one or more accidents were to occur in connection with the use of our systems or performance of our services, the affected customer may seek to terminate or cancel its use of our services which could cause us to lose substantial revenues. Furthermore, our ability to attract new customers may be impaired if they elect not to engage us because they view our safety record as unacceptable. In addition, it is possible that we will experience multiple or particularly severe accidents in the future, causing our safety record to deteriorate. This may be more likely as we continue to grow, if we experience high employee turnover or labor shortage, or hire inexperienced personnel to bolster our staffing needs.

Our and our customers' operations are subject to a number of risks arising out of the threat of climate change, including regulatory, political, litigation, and financial risks,  which could result in increased operating and capital costs for our customers and reduced demand for the products and services we provide.

The threat of climate change continues to attract considerable attention in the United States and foreign countries. As a result, numerous proposals have been made and are likely to continue to be made at the international, national, regional and state levels of government to monitor and limit emissions of GHGs as well as to eliminate such future emissions. As a result, our operations as well as the operations of our customers are subject to a series of regulatory, political and litigation and financial risks associated with the production and processing of fossil fuels and emission of GHGs.

In the United States, no comprehensive climate change legislation has been implemented at the federal level. However, with the U.S. Supreme Court finding that GHG emissions constitute a pollutant under the CAA, the EPA the EPA has adopted rules that, among other things, establish construction and operating permit reviews for GHG emissions from certain large stationary sources, require the monitoring and annual reporting of GHG emissions from certain petroleum and natural gas system sources, implement New Source Performance Standards directing the reduction of methane from certain new, modified, or reconstructed facilities in the oil and natural gas sector, and together with the U.S. Department of Transportation, implement GHG emissions limits on vehicles manufactured for operation in the United States.  Additionally, various states and groups of states have adopted or are considering adopting legislation,

regulations or other regulatory initiatives that are focused on such areas as GHG cap and trade programs, carbon taxes, reporting and tracking programs, and restriction of emissions. At the international level, there exists the United Nations-sponsored "Paris Agreement," which is a non-binding agreement for nations to limit their GHG emissions through individually-determined reduction goals every five years after 2020, although the United States has announced its withdrawal from such agreement, effective November 4, 2020.

Governmental, scientific, and public concern over the threat of climate change arising from GHG emissions has resulted in federal political risks in the United States in the form of pledges made by certain candidates seeking the office of the President of the United States in 2020. Critical declarations made by one or more presidential candidates include proposals to ban hydraulic fracturing of oil and natural gas wells and ban new leases for production of minerals on federal properties, including onshore lands and offshore waters. Other actions to oil and natural gas production activities that could be pursued by presidential candidates may include more restrictive requirements for the establishment of pipeline infrastructure or the permitting of liquified natural gas export facilities, as well as the rescission of the United States’ withdrawal from the Paris Agreement in November 2020. Litigation risks are also increasing, as a number of cities, local governments and other plaintiffs have sought to bring suit against the largest oil and natural gas exploration and production companies in state or federal court, alleging, among other things, that such companies created public nuisances by producing fuels that contributed to global warming effects, such as rising sea levels, and therefore are responsible for roadway and infrastructure damages as a result, or alleging that the companies have been aware of the adverse effects of climate change for some time but defrauded their investors by failing to adequately disclose those impacts.

There are also increasing financial risks for fossil fuel producers as stockholders and bondholders currently invested in fossil-fuel energy companies concerned about the potential effects of climate change may elect in the future to shift some or all of their investments into non-fossil fuel energy related sectors. Institutional lenders who provide financing to fossil-fuel energy companies also have become more attentive to sustainable lending practices and some of them may elect not to provide funding for fossil fuel energy companies. Additionally, the lending and investment practices of institutional lenders have been the subject of intensive lobbying efforts in recent years, oftentimes public in nature, by environmental activists, proponents of the international Paris Agreement, and foreign citizenry concerned about climate change not to provide funding for fossil fuel producers. Limitation of investments in and financings for fossil fuel energy companies could result in the restriction, delay or cancellation of drilling programs or development or production activities.

The adoption and implementation of any international, federal, regional or state legislation regulations or other regulatory initiatives impose more stringent standards for GHG emissions from the oil and natural gas sector or otherwise restrict the areas in which this sector may produce oil and natural gas or generate GHG emissions could result in increased compliance costs or costs of consuming fossil fuels.  Such legislation or regulations could, consequently, reduce demand for, oil and natural gas, which could reduce demand for our products and services. Additionally, political, financial and litigation risks may result in our oil and natural gas customers restricting or canceling production activities, incurring liability for infrastructure damages as a result of climatic changes, or impairing the ability to continue to operate in an economic manner, which also could reduce demand for our products and services. The occurrence of one or more of these developments could have a material adverse effect on our business, financial condition, results of operations, and cash flows. Finally, increasing concentrations of GHG in the Earth's atmosphere may produce climate changes that have significant physical effects, such as increased frequency and severity of storms, droughts, floods, rising sea levels and other climatic events. If any such climate changes were to occur, they could have an adverse effect on our financial condition and results of operations and the financial condition and operations of our customers.

The Endangered Species Act, the Migratory Bird Treaty Act and other laws intended to protect certain species of wildlife govern our and our oil and natural gas exploration and production customers’ operations, which constraints could have an adverse impact on our ability to expand some of our existing operations or limit our customers’ ability to develop new oil and natural gas wells.

The federal Endangered Species Act and comparable state laws were established to protect endangered and threatened species.  Under the Endangered Species Act, if a species is listed as threatened or endangered, restrictions may be imposed on activities adversely affecting that species habitat. Similar protections are offered to migratory birds

under the Migratory Bird Treaty Act. Customer oil and natural gas operations may be adversely affected by seasonal or permanent restrictions on drilling activities designed to protect various wildlife, which may limit their ability to operate in protected areas. Permanent restrictions imposed to protect endangered and threatened species could prohibit drilling in certain areas or require the implementation of expensive mitigation measures. Moreover, as a result of one or more settlements approved by the United States federal government, the U.S. Fish and Wildlife Service must make determinations on the listing of numerous species as endangered or threatened under the Endangered Species Act. The designation of previously unidentified endangered or threatened species could indirectly cause our customers to incur additional costs, cause our or our oil and natural gas exploration and production customers’ operations to become subject to operating restrictions or bans, and limit future development activity in affected areas, which could reduce demand for our products and services to those customers.

Any future indebtedness could adversely affect our financial condition.

Our 2019 Credit Agreement (as defined in Part II, Item 7. "Management's Discussion and Analysis of Financial Condition and Results of Operation—Debt Agreements”) has a borrowing capacity of up to $50.0 million. As of December 31, 2019, we had no borrowings under the 2019 Credit Agreement outstanding and the ability to draw $50.0 million.

In addition, subject to the limits contained in our 2019 Credit Agreement, we may incur additional debt from time to time. Any borrowings we may incur in the future would have several important consequences for our future operations, including that:

If we incur indebtedness in the future, we may have significant principal payments due at specified future dates under the documents governing such indebtedness. Our ability to meet such principal obligations will be dependent upon future performance, which in turn will be subject to general economic conditions, industry cycles and financial, business and other factors affecting our operations, many of which are beyond our control. Our business may not continue to generate sufficient cash flow from operations to repay any incurred indebtedness. If we are unable to generate sufficient cash flow from operations, we may be required to sell assets, to refinance all or a portion of such indebtedness or to obtain additional financing.

Our 2019 Credit Agreement subjects us to various financial and other restrictive covenants. These restrictions may limit our operational or financial flexibility and could subject us to potential defaults under our 2019 Credit Agreement.

Our 2019 Credit Agreement subjects us to significant financial and other restrictive covenants, including, but not limited to, restrictions on incurring additional debt and certain distributions. Our ability to comply with these financial condition tests can be affected by events beyond our control and we may not be able to do so.

Our 2019 Credit Agreement contains certain financial covenants, including a certain leverage ratio and a certain minimum fixed charge coverage ratio we must maintain. Please see Part II, Item 7. "Management's Discussion and Analysis of Financial Condition and Results of Operation—Debt Agreements."

If we are unable to remain in compliance with the financial covenants of our 2019 Credit Agreement, then amounts outstanding thereunder may be accelerated and become due immediately. Any such acceleration could have a material adverse effect on our financial condition and results of operations.

Increases in interest rates could adversely impact the price of our shares, our ability to issue equity or incur debt for acquisitions or other purposes.

Interest rates on future borrowings, credit facilities and debt offerings could be higher than current levels, causing our financing costs to increase accordingly. Changes in interest rates, either positive or negative, may affect the yield requirements of investors who invest in our shares, and a rising interest rate environment could have an adverse impact on the price of our shares, our ability to issue equity or incur debt for acquisitions or other purposes.

The uncertainty regarding the potential phase-out of LIBOR may negatively impact our operating results.

LIBOR, the interest rate benchmark used as a reference rate on our 2019 Credit Agreement, is expected to be phased out after 2021, when private-sector banks are no longer required to report the information used to set the rate. Without this data, LIBOR may no longer be published, or the lack of quality and quantity of data may cause the rate to no longer be representative of the market. At this time, no consensus exists as to what rate or rates will become accepted alternatives to LIBOR, although the U.S. Federal Reserve, in connection with the Alternative Reference Rates Committee, a steering committee comprised of large U.S. financial institutions, is considering replacing U.S. dollar LIBOR with the Secured Overnight Financing Rate (“SOFR”). SOFR is a more generic measure than LIBOR and considers the cost of borrowing cash overnight, collateralized by U.S. Treasury securities. Given the inherent differences between LIBOR and SOFR or any other alternative benchmark rate that may be established, there are many uncertainties regarding a transition from LIBOR, including but not limited to the need to amend all contracts with LIBOR as the referenced rate and how this will impact the Company’s cost of debt. The Company will also need to consider new contracts and if they should reference an alternative benchmark rate or include suggested fallback language, as published by the Alternative Reference Rates Committee. The consequences of these developments with respect to LIBOR cannot be entirely predicted and span multiple future periods but could result in an increase in the cost of our debt which may be detrimental to our financial position or operating results.

We rely on a few key employees whose absence or loss could adversely affect our business.

Many key responsibilities within our business have been assigned to a small number of employees. The loss of their services could adversely affect our business. In particular, the loss of the services of one or more members of our executive team, including our chief executive officer or president and chief financial officer, could disrupt our operations. We do not have any written employment agreement with our executives at this time. Further, we do not maintain "key person" life insurance policies on any of our employees. As a result, we are not insured against any losses resulting from the death of our key employees.

If we are unable to access the services of a sufficient number of skilled and qualified workers, or are required to significantly increase wages to attract or retain such workers, our capacity and profitability could be diminished and our growth potential could be impaired.

The manufacture and delivery of our products and performance of our services requires skilled and qualified workers with specialized skills and experience who can perform physically demanding work. As a result of the volatility of the oilfield services industry and the demanding nature of the work, workers may choose to pursue employment in fields that offer a more desirable work environment at wage rates that are competitive. Our ability to be productive and profitable will depend upon our ability to have access to the services of skilled workers. In addition, our ability to expand our operations depends in part on our ability to increase the size of our skilled labor force. The demand for skilled workers is high, and the supply is limited. As a result, competition for experienced personnel is intense, and a significant increase in the wages paid by competing employers could result in a reduction of our skilled labor force, increases in the rates that we must pay, or both. If either of these events were to occur, our capacity and profitability could be diminished and our growth potential could be impaired.

We may grow through acquisitions and our failure to properly plan and manage those acquisitions may adversely affect our performance.

We have completed and may, in the future, pursue asset acquisitions or acquisitions of businesses. We must plan and manage any acquisitions effectively to achieve revenue growth and maintain profitability in our evolving market. If we fail to manage acquisitions effectively, our results of operations could be adversely affected. The process of upgrading acquired assets to our specifications and integrating acquired assets or businesses may also involve unforeseen costs and delays or other operational, technical and financial difficulties and may require a significant amount time and resources and may divert management’s attention from existing operations or other priorities. Our failure to incorporate acquired assets or businesses into our existing operations successfully or to minimize any unforeseen operational difficulties could have a material adverse effect on our financial condition and results of operations. Such events could also mean an acquisition that we expected to be accretive is not accretive and, in extreme cases, the asset is idle.

Our industry overall has experienced a high rate of employee turnover. Any difficulty we experience replacing or adding personnel could have a material adverse effect on our liquidity, results of operations and financial condition.

We are dependent upon the available labor pool of skilled employees and may not be able to find enough skilled labor to meet our needs, which could have a negative effect on our growth. In addition, we are dependent upon a large number of independent contractors to service our business and construct our proppant and chemical management systems.  Increased competition for their services could result in a loss of available, skilled contractors or services at a price that is not as advantageous to our business, both of which could negatively affect our operating results. We are also subject to the Fair Labor Standards Act, which governs such matters as minimum wage, overtime and other working conditions. Our systems and services require skilled workers who can perform physically demanding work. As a result of our industry volatility, including the recent and pronounced decline in drilling activity, as well as the demanding nature of the work, many workers in our industry have left to pursue employment in different fields. Though our historical turnover rates have been significantly lower than those of our competitors, if we are unable to retain or meet growing demand for skilled technical personnel, our operating results and our ability to execute our growth strategies may be adversely affected.

We may be subject to claims for personal injury and property damage, which could materially adversely affect our financial condition, prospects and results of operations.

Our systems and services are subject to inherent risks that can cause personal injury or loss of life, damage to or destruction of property, equipment or the environment or the suspension of our operations. Litigation arising from our operations, including where our systems are deployed or services are provided or from transportation associated with moving our systems or employees, may cause us to be named as a defendant in lawsuits asserting potentially large claims including claims for exemplary damages. We maintain what we believe is customary and reasonable insurance to protect our business against these potential losses, but such insurance may not be adequate to cover our liabilities, and we are not fully insured against all risks.

In addition, our customer assumes responsibility for, including control and removal of, all other pollution or contamination which may occur during operations, including that which may result from seepage or any other uncontrolled flow of drilling and completion fluids. We may have liability in such cases if we are negligent or commit willful acts. Our customers generally agree to indemnify us against claims arising from their employees' personal injury or death to the extent that, in the case of our well site services, their employees are injured or their properties are damaged by such services, unless resulting from our gross negligence or willful misconduct. Our customers also generally agree to indemnify us for loss or destruction of customer-owned property or equipment. In turn, we agree to indemnify our customers for loss or destruction of property or equipment we own and for liabilities arising from personal injury to or death of any of our employees, unless resulting from gross negligence or willful misconduct of the customer. However, we might not succeed in enforcing such contractual allocation or might incur an unforeseen liability falling outside the scope of such allocation. As a result, we may incur substantial losses which could adversely affect our financial condition and results of operation. Alternatively, even if we are fully indemnified or insured, any legal proceedings could negatively impact our reputation among our customers and the public, and make it more difficult for us to compete effectively or obtain adequate insurance in the future.

Seasonal weather conditions and natural disasters could severely disrupt normal operations and harm our business.

Our operations are located in different regions of the United States, some of which are prone to periods of heavy snow, ice or rain and others of which may be prone to certain natural disasters such as tornadoes. The occurrence of any such severe weather conditions or natural disasters could cause our E&P customers to suspend operations, thereby reducing the demand for our systems and services and our ability to generate revenues. The exploration activities of our customers may also be affected during such periods of adverse weather conditions. Additionally, extended drought conditions in our operating regions could impact our ability or our customers' ability to source sufficient water or increase the cost for such water. As a result, a natural disaster or inclement weather conditions could severely disrupt the normal operation of our business and adversely impact our financial condition and results of operations.

We may be subject to interruptions or failures in our information technology systems.

We rely on sophisticated information technology systems and infrastructure to support our business, including but not limited to process control technology through our integrated Railtronix and Solaris Lens inventory management systems. Any of these systems may be susceptible to outages due to fire, floods, power loss, telecommunications failures, usage errors by employees, computer viruses, cyber-attacks or other security breaches, or similar events. The failure of any of our information technology systems may cause disruptions in our or our customers’ operations, which could adversely affect our reputation, sales and profitability.

We are subject to cyber security risks. A cyber incident could occur and result in information theft, data corruption, operational disruption and/or financial loss.

The oil and natural gas industry has become increasingly dependent on digital technologies to conduct certain processing activities. For example, we depend on digital technologies to deliver our systems and perform many of our services and to process and record financial and operating data. In addition, in the ordinary course of our business, we collect and store sensitive data, including our proprietary business information and personally identifiable information of our employees in our data centers and on our networks. These secure processing, maintenance and transmission of this information is important to our operations. At the same time, cyber incidents, including deliberate attacks, have increased and become more sophisticated. The United States government has issued public warnings that indicate that energy assets might be specific targets of cyber security threats. Our technologies, systems and networks, and those of our customers, vendors, suppliers and other business partners, may become the target of cyberattacks or information security breaches that could result in the unauthorized release, gathering, monitoring, misuse, loss or destruction of proprietary and other information, or other disruption of business operations. This could result in significant losses, loss of customers and business opportunities, reputation damage, litigation, regulatory fines, penalties or intervention, reimbursement or other compensatory costs, or otherwise adversely affect our business, financial condition or results of operations. In addition, certain cyber incidents, such as surveillance, may remain undetected for an extended period. Our systems and controls for protecting against cyber security risks, and those used by our business partners, may not be sufficient. As cyber incidents continue to evolve, we will likely be required to expend additional resources to continue to modify or enhance our protective measures or to investigate and remediate any vulnerability to cyber incidents. The reliability and capacity of our information technology systems is critical to our operations. Any material disruption in our information technology systems or systems that affect our business operations, or delays or difficulties in implementing or integrating new systems or enhancing current systems, could have an adverse effect on our business and results of operations.

A terrorist attack or armed conflict could harm our business.

The occurrence or threat of terrorist attacks in the United States or other countries, anti-terrorist efforts and other armed conflicts involving the United States or other countries, including continued hostilities in the Middle East, may adversely affect the United States and global economies and could prevent us from meeting our financial and other obligations. Additionally, destructive forms of protest and opposition by extremists and other disruptions, including acts of sabotage or eco-terrorism, against oil and natural gas development and production activities could potentially result in personal injury to persons, damages to property, natural resources or the environment, or lead to extended interruptions of our or our clients’ operations. If any of these events occur, the resulting political instability and societal disruption

could reduce overall demand for oil and natural gas, potentially putting downward pressure on demand for our systems and services and causing a reduction in our revenues. Oil and natural gas related facilities could be direct targets of terrorist attacks, and our operations could be adversely impacted if infrastructure integral to our customers' operations is destroyed or damaged. Costs for insurance and other security may increase as a result of these threats, and some insurance coverage may become more difficult to obtain, if available at all.

We engage in transactions with related parties and such transactions present possible conflicts of interest that could have an adverse effect on us.

We have entered into transactions with related parties. The details of certain of these transactions are set forth in Note 13. “Related Party Transactions” under Part II, Item 8. “Financial Statements and Supplementary Data.” Related party transactions create the possibility of conflicts of interest with regard to our management or directors. Such a conflict could cause an individual in our management or on our board of directors to seek to advance his or her economic interests above ours. Further, the appearance of conflicts of interest created by related party transactions could impair the confidence of our investors. Our board of directors, or a committee thereof, regularly reviews these transactions. Notwithstanding this, it is possible that a conflict of interest could have a material adverse effect on our liquidity, results of operations and financial condition.

Our historical financial statements may not be indicative of future performance.

Due to our limited operating history, comparisons of our current and future operating results with prior periods are difficult. As a result, our limited historical financial performance may make it difficult for stockholders to evaluate our business and results of operations to date and to assess our future prospects and viability.

We may record losses or impairment charges related to idle or underutilized assets, or assets that we sell.

Prolonged periods of low demand for our products and services, changes in technology or the sale of assets below their carrying value may cause us to experience losses. For example, the profitability of our Kingfisher Facility relies in large part upon the volumes of sand being processed through the Facility.  Any increase in local or regional sand or additional transload facilities constructed in close proximity could eliminate our current and potential customers’ need for the Kingfisher Facility, thus reducing the throughput volumes and corresponding profitability. These events, or periods of underutilization, could result in the recognition of impairment charges that negatively impact our financial results. Significant impairment charges as a result of a decline in market conditions or otherwise could have a material adverse effect on our results of operations in future periods.

Final regulations relating to and interpretations of provisions of the Tax Act may vary from our current interpretation of such legislation.

The United States federal income tax legislation enacted in Public Law No. 115-97, commonly referred to as the Tax Cuts and Jobs Act (the “Tax Act”), is highly complex and subject to interpretation. The presentation of our financial condition and results of operations is based upon our current interpretation of the provisions contained in the Tax Act. In the future, the Treasury Department and the Internal Revenue Service are expected to issue final regulations and additional interpretive guidance with respect to the provisions of the Tax Act. Any significant variance of our current interpretation of such provisions from any future final regulations or interpretive guidance could result in a change to the presentation of our financial condition and results of operations and could negatively affect our business.

If we fail to establish and maintain proper internal controls, our ability to produce accurate financial statements or comply with applicable regulations could be impaired.

Under Section 404(a) of the Sarbanes-Oxley Act our management is required to assess and report annually on the effectiveness of our internal control over financial reporting and identify any material weaknesses in our internal control over financial reporting. Once we are no longer an emerging growth company, Section 404(b) of the Sarbanes-Oxley Act will require our independent registered public accounting firm to issue an annual report that addresses the effectiveness of our internal control over financial reporting.

Subsequent to filing the Company’s Quarterly Report on Form 10-Q for the period ending March 31, 2019, our management identified a material weakness in our internal control over financial reporting pertaining to the Company’s accounting of its investment in Solaris LLC. This error resulted in the restatement of our consolidated financial statements included in our Annual Reports on Form 10-K for the years ended December 31, 2018 and 2017, and Quarterly Report on Form 10-Q for the period ended March 31, 2019. As a result of this material weakness, management, under the supervision and with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, has concluded that the Company’s internal control over financial reporting and disclosure controls and procedures were not effective as of December 31, 2018.

As described in Part II, Item 9A of this Annual Report on Form 10-K, we have taken steps to remediate this material weakness.

If further material weaknesses are discovered in the future, the Company’s financial statements could contain additional errors which, in turn, could lead to errors in our financial reports and/or delays in our financial reporting, which could require us to further restate our operating results.

If additional material weaknesses occur, investors may lose confidence in our operating results, the price of our Class A common stock could decline and we may be subject to litigation or regulatory enforcement actions. In addition, if we are unable to meet the requirements of Section 404 of the Sarbanes-Oxley Act, we may not be able to remain listed on the NYSE.

Implementing any appropriate changes to our internal controls may require expending additional resources and providing additional management oversight, specific compliance training of our directors and employees, entail substantial costs in order to modify our existing accounting systems, take a significant period of time to complete and divert management’s attention from other business concerns. These changes may not, however, ultimately be effective in allowing us to achieve and maintain adequate internal controls.

The restatement of our consolidated financial statements has subjected us to a number of additional risks and uncertainties, including regulatory, stockholder or other actions, loss of investor confidence and negative impacts on our stock price. 

As discussed elsewhere in this Annual Report on Form 10-K, we restated our consolidated financial statements included in our Annual Reports on Form 10-K for the periods ended December 31, 2018 and 2017 (and the quarterly periods within those years), and our Quarterly Report on Form 10-Q for the period ended March 31, 2019. The preparation of our restated financial statements has caused us to incur substantial expenses for legal, accounting, tax and other professional services and has diverted our management’s attention from our business and could continue to do so. If additional restatements were to occur, investors may lose confidence in our operating results, the price of our Class A common stock could decline and we may be subject to litigation or regulatory enforcement actions.

Risks Related to Our Class A Common Stock

Solaris Inc. is a holding company. Solaris Inc.’s sole material asset is its equity interest in Solaris LLC and Solaris Inc. is accordingly dependent upon distributions from Solaris LLC to pay taxes, make payments under the Tax Receivable Agreement and cover its corporate and other overhead expenses.

Solaris Inc. is a holding company and has no material assets other than its equity interest in Solaris LLC. Solaris Inc. has no independent means of generating revenue. To the extent Solaris LLC has available cash, Solaris Inc. intends to cause Solaris LLC to make (i) generally pro rata distributions to its unitholders, including Solaris Inc., in an amount at least sufficient to allow Solaris Inc. to pay its taxes and to make payments under the Tax Receivable Agreement and any subsequent tax receivable agreements that Solaris Inc. may enter into in connection with future acquisitions and (ii) non-pro rata payments to it to reimburse it for Solaris Inc.’s corporate and other overhead expenses. To the extent that Solaris Inc. needs funds and Solaris LLC or its subsidiaries are restricted from making such distributions or payments under applicable law or regulation or under the terms of any future financing arrangements, or are otherwise unable to provide such funds, Solaris Inc.’s liquidity and financial condition could be materially adversely affected.

Moreover, because Solaris Inc. has no independent means of generating revenue, its ability to make payments under the Tax Receivable Agreement is dependent on the ability of Solaris LLC to make distributions to Solaris Inc. in an amount sufficient to cover its obligations under the Tax Receivable Agreement. This ability, in turn, may depend on the ability of Solaris LLC's subsidiaries to make distributions to it. The ability of Solaris LLC, its subsidiaries and other entities in which it directly or indirectly holds an equity interest to make such distributions is subject to, among other things, (i) the applicable provisions of Delaware law (or other applicable jurisdiction) that may limit the amount of funds available for distribution and (ii) restrictions in relevant debt instruments issued by Solaris LLC or its subsidiaries and/other entities in which it directly or indirectly holds an equity interest. To the extent that Solaris Inc. is unable to make payments under the Tax Receivable Agreement for any reason, such payments will be deferred and will accrue interest until paid.

The requirements of being a public company, including compliance with the reporting requirements of the Exchange Act, and the requirements of the Sarbanes-Oxley Act of 2002, may strain our resources, increase our costs and distract management, and we may be unable to comply with these requirements in a timely or cost-effective manner.

As a public company, we need to comply with laws, regulations and requirements, certain corporate governance provisions of the Sarbanes-Oxley Act of 2002 and related regulations of the SEC and the requirements of the New York Stock Exchange (“NYSE”). Complying with these statutes, regulations and requirements occupies a significant amount of time of our board of directors and management and significantly increases our costs and expenses. We have been required to:

Furthermore, while we must comply with Section 404 of the Sarbanes-Oxley Act of 2002, we are not required to have our independent registered public accounting firm attest to the effectiveness of our internal controls until our first annual report subsequent to our ceasing to be an "emerging growth company" within the meaning of Section 2(a)(19) of the Securities Act. Accordingly, we may not be required to have our independent registered public accounting firm attest to the effectiveness of our internal controls until as late as our annual report for the fiscal year ending December 31, 2022. Once it is required to do so, our independent registered public accounting firm may issue a report that is adverse in the event it is not satisfied with the level at which our controls are documented, designed, operated or reviewed. Compliance with these requirements may strain our resources, increase our costs and distract management, and we may be unable to comply with these requirements in a timely or cost-effective manner.

In addition, being a public company subject to these rules and regulations may make it more difficult and more expensive for us to obtain director and officer liability insurance and we may be required to accept reduced policy limits and coverage or incur substantially higher costs to obtain the same or similar coverage. As a result, it may be more difficult for us to attract and retain qualified individuals to serve on our board of directors or as executive officers. We are currently evaluating these rules, and we cannot predict or estimate the amount of additional costs we may incur or the timing of such costs.

Our stock price could be volatile, and you may not be able to resell shares of your Class A common stock at or above the price you paid.

The stock markets in general have experienced extreme volatility that has often been unrelated to the operating performance of particular companies. These broad market fluctuations may adversely affect the trading price of our

Class A common stock. Volatility in the market price of our Class A common stock may prevent you from being able to sell your Class A common stock at or above the price at which you purchased the stock. As a result, you may suffer a loss on your investment. Securities class action litigation has often been instituted against companies following periods of volatility in the overall market and in the market price of a company's securities. Such litigation, if instituted against us, could result in very substantial costs, divert our management's attention and resources and harm our business, operating results and financial condition.

In addition to the risks described in this section, the market price of our Class A common stock may fluctuate significantly in response to a number of factors, most of which we cannot control, including:

Our principal stockholders collectively hold a significant amount of the voting power of our common stock.

Holders of Class A common stock and Class B common stock vote together as a single class on all matters presented to our stockholders for their vote or approval, except as otherwise required by applicable law or our certificate of incorporation, and the members of Solaris LLC immediately prior to the IPO (collectively, the “Original Investors”) own a substantial majority of our Class B common stock, which represents 35% of our combined economic interest and voting power.

Although the Original Investors are entitled to act separately in their own respective interests with respect to their ownership in us, if the Original Investors choose to act in concert, they will together have the ability to strongly influence the election of the members of our board of directors, and thereby our management and affairs. In addition,

they will be able to strongly influence the outcome of all matters requiring stockholder approval, including mergers and other material transactions. The existence of significant stockholders may also have the effect of deterring hostile takeovers, delaying or preventing changes in control or changes in management, or limiting the ability of our other stockholders to approve transactions that they may deem to be in the best interests of our company.

So long as the Original Investors continue to control a significant amount of our common stock, each will continue to be able to strongly influence all matters requiring stockholder approval, regardless of whether or not other stockholders believe that a potential transaction is in their own best interests. In any of these matters, the interests of the Original Investors may differ or conflict with the interests of our other stockholders. In addition, certain of our Original Investors, including Yorktown, and their respective affiliates may, from time to time, acquire interests in businesses that directly or indirectly compete with our business, as well as businesses that are significant existing or potential customers. Such Original Investors and their respective affiliates may acquire or seek to acquire assets that we seek to acquire and, as a result, those acquisition opportunities may not be available to us or may be more expensive for us to pursue. Moreover, this concentration of stock ownership may also adversely affect the trading price of our Class A common stock to the extent investors perceive a disadvantage in owning stock of a company with a controlling stockholder.

Certain of our directors have significant duties with, and spend significant time serving, entities that may compete with us in seeking acquisitions and business opportunities and, accordingly, may have conflicts of interest in allocating time or pursuing business opportunities.

Certain of our officers and directors hold positions of responsibility with other entities (including affiliated entities) that are in the oil and natural gas industry. For example, William A. Zartler, our Chairman and Chief Executive Officer, is the Chief Executive Officer of Solaris Midstream Holdings, LLC, a midstream company that owns, operates and designs midstream assets across United States basins and is currently focused on water-specific midstream solutions in the Permian Basin, a position which may require a significant portion of his time. These officers and directors may become aware of business opportunities that may be appropriate for presentation to us as well as to the other entities with which they are or may become affiliated. Due to these existing and potential future affiliations, they may present potential business opportunities to other entities prior to presenting them to us, which could cause additional conflicts of interest. They may also decide that certain opportunities are more appropriate for other entities with which they are affiliated, and as a result, they may elect not to present those opportunities to us. These conflicts may not be resolved in our favor. For additional discussion of our directors' business affiliations and the potential conflicts of interest of which our stockholders should be aware, see Note 13. “Related Party Transactions” under Part II, Item 8. “Financial Statements and Supplementary Data.”

Certain Designated Parties are not limited in their ability to compete with us, and the corporate opportunity provisions in our amended and restated certificate of incorporation could enable such Designated Parties and their respective affiliates to benefit from corporate opportunities that might otherwise be available to us.

Our governing documents provide that Yorktown, Wells Fargo Central Pacific Holdings, Inc. and our directors who are not also our officers, including William A. Zartler, our Chief Executive Officer and the Chairman of our board of directors, and their respective portfolio investments and affiliates (collectively, the "Designated Parties") are not restricted from owning assets or engaging in businesses that compete directly or indirectly with us.

In particular, subject to the limitations of applicable law, our amended and restated certificate of incorporation, among other things:

The Designated Parties may become aware, from time to time, of certain business opportunities (such as acquisition opportunities) and may direct such opportunities to other businesses in which they have invested, in which case we may not become aware of or otherwise have the ability to pursue such opportunity. Furthermore, such businesses may choose to compete with us for these opportunities, possibly causing these opportunities to not be available to us or causing them to be more expensive for us to pursue. In addition, the Designated Parties may dispose of oil and natural gas service assets in the future, without any obligation to offer us the opportunity to purchase any of those assets. As a result, our renouncing our interest and expectancy in any business opportunity that may be from time to time presented to the Designated Parties could adversely impact our business or prospects if attractive business opportunities are procured by such parties for their own benefit rather than for ours.

Our amended and restated certificate of incorporation and amended and restated bylaws, as well as Delaware law, contain provisions that could discourage acquisition bids or merger proposals, which may adversely affect the market price of our Class A common stock and could deprive our investors of the opportunity to receive a premium for their shares.

Our amended and restated certificate of incorporation authorizes our board of directors to issue preferred stock without stockholder approval in one or more series, designate the number of shares constituting any series, and fix the rights, preferences, privileges and restrictions thereof, including dividend rights, voting rights, rights and terms of redemption, redemption price or prices and liquidation preferences of such series. If our board of directors elects to issue preferred stock, it could be more difficult for a third party to acquire us. In addition, some provisions of our amended and restated certificate of incorporation and amended and restated bylaws could make it more difficult for a third party to acquire control of us, even if the change of control would be beneficial to our stockholders. These provisions include:

In addition, certain change of control events have the effect of accelerating the payment due under the Tax Receivable Agreement, which could be substantial and accordingly serve as a disincentive to a potential acquirer of our company. Please see "—In certain cases, payments under the Tax Receivable Agreement may be accelerated and/or

significantly exceed the actual benefits, if any, Solaris Inc. realizes in respect of the tax attributes subject to the Tax Receivable Agreement."

Our amended and restated certificate of incorporation designates the Court of Chancery of the State of Delaware as the sole and exclusive forum for certain types of actions and proceedings that may be initiated by our stockholders, which could limit our stockholders' ability to obtain a favorable judicial forum for disputes with us or our directors, officers, employees or agents.

Our amended and restated certificate of incorporation provides that, unless we consent in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware will, to the fullest extent permitted by applicable law, be the sole and exclusive forum for (i) any derivative action or proceeding brought on our behalf, (ii) any action asserting a claim of breach of a fiduciary duty owed by any of our directors, officers, employees or agents to us or our stockholders, (iii) any action asserting a claim arising pursuant to any provision of the Delaware General Corporation Law (the "DGCL"), our amended and restated certificate of incorporation or our bylaws, or (iv) any action asserting a claim against us that is governed by the internal affairs doctrine, in each such case subject to such Court of Chancery having personal jurisdiction over the indispensable parties named as defendants therein. Section 27 of the Exchange Act creates exclusive federal jurisdiction over all suits brought to enforce any duty or liability created by the Exchange Act or the rules and regulations promulgated thereunder. As a result, the exclusive forum provision will not apply to actions arising under the Exchange Act or the rules and regulations promulgated thereunder. However, Section 22 of the Securities Act provides for concurrent federal and state court jurisdiction over actions under the Securities Act and the rules and regulations promulgated thereunder, subject to a limited exception for certain “covered class actions” as defined in Section 16 of the Securities Act and interpreted by the courts. Accordingly, we believe that the exclusive forum provision would apply to actions arising under the Securities Act or the rules and regulations promulgated thereunder, except to the extent a particular action fell within the exception for covered class actions or the exception in the certificate of incorporation described above otherwise applied to such action, which could occur if, for example, the action also involved claims under the Exchange Act. Stockholders will not be deemed, by operation of Article 14 of the certificate of incorporation alone, to have waived claims arising under the federal securities laws and the rules and regulations promulgated thereunder.

Any person or entity purchasing or otherwise acquiring any interest in shares of our capital stock will be deemed to have notice of, and consented to, the provisions of our amended and restated certificate of incorporation described in the preceding sentence. This choice of forum provision may limit a stockholder's ability to bring a claim in a judicial forum that it finds favorable for disputes with us or our directors, officers, employees or agents, which may discourage such lawsuits against us and such persons. Alternatively, if a court were to find these provisions of our amended and restated certificate of incorporation inapplicable to, or unenforceable in respect of, one or more of the specified types of actions or proceedings, we may incur additional costs associated with resolving such matters in other jurisdictions, which could adversely affect our business, financial condition or results of operations.

Holders of our Class A common stock may not receive dividends on our Class A common stock.

We declared our first dividend to Class A stockholders in the fourth quarter of 2018 and have continued to declare dividends on a quarterly basis. Holders of our Class A common stock are entitled to receive only such dividends as our board of directors may declare out of funds legally available for such payments. We are incorporated in Delaware and are governed by the DGCL. The DGCL allows a corporation to pay dividends only out of a surplus, as determined under Delaware law or, if there is no surplus, out of net profits for the fiscal year in which the dividend was declared and for the preceding fiscal year. Under the DGCL, however, we cannot pay dividends out of net profits if, after we pay the dividend, our capital would be less than the capital represented by the outstanding stock of all classes having a preference upon the distribution of assets. While management and our board of directors remain committed to evaluating additional ways of creating shareholder value, any determination to pay dividends and other distributions in cash, stock or property by us in the future will be at the discretion of our board of directors and will be dependent on then-existing conditions, including business conditions, our financial condition, results of operations, liquidity, capital requirements, contractual restrictions including restrictive covenants contained in debt agreements and other factors. While we have declared and paid a quarterly cash dividend on our Class A common stock as described under Part II, Item 5. “Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities” of this Annual Report, we are not required to declare future cash dividends on our Class A common stock.

Future sales of our Class A common stock in the public market, or the perception that such sales may occur, could reduce our stock price, and any additional capital raised by us through the sale of equity or convertible securities may dilute your ownership in us.

We may sell additional shares of our Class A common stock in subsequent offerings. In addition, subject to certain limitations and exceptions, the Original Investors may redeem their Solaris LLC Units (together with a corresponding number of shares of Class B common stock) for shares of Class A common stock (on a one-for-one basis, subject to conversion rate adjustments for stock splits, stock dividends and reclassification and other similar transactions) and then sell those shares of Class A common stock.

We previously filed a registration statement with the SEC on Form S-8 providing for the registration of 5,629,888 shares of our Class A common stock issued or reserved for issuance under our long-term incentive plan. Subject to the satisfaction of vesting conditions, shares registered under the registration statement on Form S-8 may be made available for resale immediately in the public market without restriction.

We cannot predict the size of future issuances of our Class A common stock or securities convertible into Class A common stock or the effect, if any, that future issuances and sales of shares of our Class A common stock will have on the market price of our Class A common stock. Sales of substantial amounts of our Class A common stock (including shares issued in connection with an acquisition), or the perception that such sales could occur, may adversely affect prevailing market prices of our Class A common stock.

Solaris Inc. will be required to make payments under the Tax Receivable Agreement for certain tax benefits that it may claim, and the amounts of such payments could be significant.

In connection with the closing of the IPO, Solaris Inc. entered into a Tax Receivable Agreement with the TRA Holders (as defined herein). This agreement generally provides for the payment by Solaris Inc. to each TRA Holder of 85% of the net cash savings, if any, in United States federal, state and local income tax and franchise tax that Solaris Inc. actually realizes (computed using simplifying assumptions to address the impact of state and local taxes) or is deemed to realize in certain circumstances in periods after the IPO as a result of certain increases in tax basis and certain benefits attributable to imputed interest. Solaris Inc. will retain the benefit of the remaining 15% of these cash savings.

The term of the Tax Receivable Agreement will continue until all tax benefits that are subject to the Tax Receivable Agreement have been utilized or expired, unless Solaris Inc. exercises its right to terminate the Tax Receivable Agreement (or the Tax Receivable Agreement is terminated due to other circumstances, including Solaris Inc.’s breach of a material obligation thereunder or certain mergers, asset sales, other forms of business combination or other changes of control), and Solaris Inc. makes the termination payment specified in the Tax Receivable Agreement. In addition, payments Solaris Inc. makes under the Tax Receivable Agreement will be increased by any interest accrued from the due date (without extensions) of the corresponding tax return.

The payment obligations under the Tax Receivable Agreement are Solaris Inc.'s obligations and not obligations of Solaris LLC, and Solaris Inc. expects that the payments it will be required to make under the Tax Receivable Agreement will be substantial. Estimating the amount and timing of payments that may become due under the Tax Receivable Agreement is by its nature imprecise. For purposes of the Tax Receivable Agreement, cash savings in tax generally are calculated by comparing Solaris Inc.’s actual tax liability (determined by using the actual applicable United States federal income tax rate and an assumed combined state and local income and franchise tax rate) to the amount Solaris Inc. would have been required to pay had it not been able to utilize any of the tax benefits subject to the Tax Receivable Agreement. The actual increase in tax basis, as well as the amount and timing of any payments under the Tax Receivable Agreement, will vary depending upon a number of factors, including the timing of any redemption of Solaris LLC Units, the price of Solaris Inc.’s Class A common stock at the time of each redemption, the extent to which such redemptions are taxable transactions, the amount and timing of the taxable income Solaris Inc. generates in the future, the United States federal income tax rates then applicable, and the portion of Solaris Inc.’s payments under the Tax Receivable Agreement that constitute imputed interest or give rise to depreciable or amortizable tax basis.

The payments under the Tax Receivable Agreement are not conditioned upon a holder of rights under the Tax Receivable Agreement having a continued ownership interest in Solaris Inc. or Solaris LLC. For additional information

regarding the Tax Receivable Agreement, see Note 10. “Income Taxes” under Part II, Item 8. “Financial Statements and Supplementary Data.”

In certain cases, payments under the Tax Receivable Agreement may be accelerated and/or significantly exceed the actual benefits, if any, Solaris Inc. realizes in respect of the tax attributes subject to the Tax Receivable Agreement.

If we experience a change of control (as defined under the Tax Receivable Agreement, which includes certain mergers, asset sales and other forms of business combinations) or the Tax Receivable Agreement terminates early (at Solaris Inc.’s election or as a result of its breach), we would be required to make a substantial, immediate lump-sum payment. This payment would equal the present value of hypothetical future payments that could be required to be paid under the Tax Receivable Agreement (determined by applying a discount rate of one-year London Interbank Offered Rate ("LIBOR") plus 100 basis points). The calculation of hypothetical future payments will be based upon certain assumptions and deemed events set forth in the Tax Receivable Agreement, including that (i) Solaris Inc. has sufficient taxable income to fully utilize the tax benefits covered by the Tax Receivable Agreement (including having sufficient taxable income to currently utilize any accumulated net operating loss carryforwards) and (ii) any Solaris LLC Units (other than those held by Solaris Inc.) outstanding on the termination date are deemed to be redeemed on the termination date. Any early termination payment may be made significantly in advance of, and may materially exceed, the actual realization, if any, of the future tax benefits to which the termination payment relates.

If we experience a change of control (as defined under the Tax Receivable Agreement) or the Tax Receivable Agreement otherwise terminates early, Solaris Inc.’s obligations under the Tax Receivable Agreement could have a substantial negative impact on Solaris Inc.’s liquidity and could have the effect of delaying, deferring or preventing certain mergers, asset sales or other forms of business combinations or changes of control. For example, if the Tax Receivable Agreement were terminated immediately after the filing of this Annual Report, the estimated termination payments would, in the aggregate, be approximately $101.7 million (calculated using a discount rate equal to one-year LIBOR plus 100 basis points, applied against an undiscounted liability of $114.6 million, based upon the last reported closing sale price of our Class A common stock on December 31, 2019). The foregoing number is merely an estimate and the actual payment could differ materially. There can be no assurance that we will be able to finance our obligations under the Tax Receivable Agreement.

Please read Note 10. “Income Taxes” under Part II, Item 8. “Financial Statements and Supplementary Data.”

In the event that Solaris Inc.’s payment obligations under the Tax Receivable Agreement are accelerated upon certain mergers, other forms of business combinations or other changes of control, the consideration payable to holders of our Class A common stock could be substantially reduced.

If we experience a change of control (as defined under the Tax Receivable Agreement, which includes certain mergers, asset sales and other forms of business combinations) Solaris Inc. would be obligated to make a substantial, immediate lump-sum payment, and such payment may be significantly in advance of, and may materially exceed, the actual realization, if any, of the future tax benefits to which the payment relates. As a result of this payment obligation, holders of our Class A common stock could receive substantially less consideration in connection with a change of control transaction than they would receive in the absence of such obligation. Further, Solaris Inc.’s payment obligations under the Tax Receivable Agreement will not be conditioned upon the TRA Holders having a continued interest in Solaris Inc. or Solaris LLC. Accordingly, the TRA Holders' interests may conflict with those of the holders of our Class A common stock. Please read "—Risks Related to Our Class A Common Stock—In certain cases, payments under the Tax Receivable Agreement may be accelerated and/or significantly exceed the actual benefits, if any, Solaris Inc. realizes in respect of the tax attributes subject to the Tax Receivable Agreement" and Note 10. “Income Taxes” under Part II, Item 8. “Financial Statements and Supplementary Data.”

We will not be reimbursed for any payments made under the Tax Receivable Agreement in the event that any tax benefits are subsequently disallowed.

Payments under the Tax Receivable Agreement will be based on the tax reporting positions that we will determine. The TRA Holders will not reimburse us for any payments previously made under the Tax Receivable Agreement if any

tax benefits that have given rise to payments under the Tax Receivable Agreement are subsequently disallowed, except that excess payments made to any TRA Holder will be netted against payments that would otherwise be made to such TRA Holder, if any, after our determination of such excess. As a result, in such circumstances, we could make payments that are greater than our actual cash tax savings, if any, and may not be able to recoup those payments, which could adversely affect our liquidity.

We may issue preferred stock whose terms could adversely affect the voting power or value of our Class A common stock.

Our amended and restated certificate of incorporation authorizes us to issue, without the approval of our stockholders, one or more classes or series of preferred stock having such designations, preferences, limitations and relative rights, including preferences over our Class A common stock respecting dividends and distributions, as our board of directors may determine. The terms of one or more classes or series of preferred stock could adversely impact the voting power or value of our Class A common stock. For example, we might grant holders of preferred stock the right to elect some number of our directors in all events or on the happening of specified events or the right to veto specified transactions. Similarly, the repurchase or redemption rights or liquidation preferences we might assign to holders of preferred stock could affect the residual value of the Class A common stock.

For as long as we are an emerging growth company, we will not be required to comply with certain reporting requirements, including those relating to accounting standards and disclosure about our executive compensation, that apply to other public companies.

We are classified as an "emerging growth company" under the Jumpstart Our Business Startups Act (the “JOBS Act”). For as long as we are an emerging growth company, which may be up to five full fiscal years, unlike other public companies, we will not be required to, among other things: (i) provide an auditor's attestation report on management's assessment of the effectiveness of our system of internal control over financial reporting pursuant to Section 404(b) of the Sarbanes-Oxley Act of 2002; (ii) comply with any new requirements if adopted by the Public Company Accounting Oversight Board (United States) (“PCAOB”) requiring mandatory audit firm rotation or a supplement to the auditor's report in which the auditor would be required to provide additional information about the audit and the financial statements of the issuer; (iii) provide certain disclosures regarding executive compensation required of larger public companies; or (iv) hold nonbinding advisory votes on executive compensation. The Company has elected not to use the extended transition period for complying with any new or revised financial accounting standards. We may remain an emerging growth company until December 31, 2022, although we will lose that status sooner if we have more than $1.07 billion of revenues in a fiscal year, have more than $700.0 million in market value of our Class A common stock held by non-affiliates, or issue more than $1.0 billion of non-convertible debt over a three-year period.

To the extent that we rely on any of the exemptions available to emerging growth companies, you will receive less information about our executive compensation and internal control over financial reporting than issuers that are not emerging growth companies. If some investors find our Class A common stock to be less attractive as a result, there may be a less active trading market for our Class A common stock and our stock price may be more volatile.

If securities or industry analysts adversely change their recommendations regarding our Class A common stock or if our operating results do not meet their expectations, our stock price could decline.

The trading market for our Class A common stock will be influenced by the research and reports that industry or securities analysts publish about us or our business. If one or more of these analysts cease coverage of our company or fail to publish reports on us regularly, we could lose visibility in the financial markets, which in turn could cause our stock price or trading volume to decline. Moreover, if one or more of the analysts who cover our company downgrades our Class A common stock or if our operating results do not meet their expectations, our stock price could decline.

Item 1B.      Unresolved Staff Comments

None.

Item 2.        Properties

Our principal properties are described in Item 1. “Business” under the caption “—Kingfisher Facility.”

Item 3.       Legal Proceedings

Due to the nature of our business, we may become, from time to time, involved in routine litigation or subject to disputes or claims related to our business activities. In the opinion of our management, there are no pending litigation, disputes or claims against us which, if decided adversely, will have a material adverse effect on our financial condition, cash flows or results of operations.

Item 4.      Mine Safety Disclosures

Not applicable.

Part II

Item 5.      Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

Market Information

Shares of our Class A common stock trade on the NYSE under the symbol “SOI.”  

As of February 14, 2020, we had approximately 9  holders of record of our Class A common stock. This number excludes owners for whom Class A common stock may be held in "street" name.

There is no market for our Class B common stock. As of February 14, 2020, we had 19 holders of record of our Class B common stock.

Dividend Policy

The Company pays dividends on its Class A common stock. We currently intend to continue paying the quarterly dividend while retaining the balance of future earnings, if any, to finance the growth of our business. However, our future dividend policy is within the discretion of our board of directors and will depend upon then-existing conditions, including our results of operations, financial condition, capital requirements, investment opportunities, statutory restrictions on our ability to pay dividends and other factors our board of directors may deem relevant. In addition, our 2019 Credit Agreement contains certain restrictions on our ability to pay cash dividends to holders of our Class A common stock.

Securities Authorized for Issuance under Equity Compensation Plans

The information relating to our equity compensation plans required by Item 5 is incorporated by reference to such information as set forth in Item 12. “Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters” contained herein.

Issuer Purchases of Equity Securities

The following table presents the total number of shares of our Class A common stock that we purchased during the year ended December 31, 2019 and the average price paid per share:

Sales of Unregistered Equity Securities

We did not have any sales of unregistered equity securities during the year ended December 31, 2019.

Item 6.       Selected Financial Data

Solaris Inc. was formed in February 2017 and did not have any historical financial or operating results prior to the IPO. Following the IPO, Solaris Inc. became the sole managing member for Solaris LLC. As a result, Solaris Inc. consolidates the financial results of Solaris LLC and its subsidiaries and reports noncontrolling interest related to the portion of Solaris LLC Units not owned by Solaris Inc., which reduces net income (loss) attributable to the holders of Solaris Inc.'s Class A stock. For periods prior to the completion of the IPO, the accompanying consolidated financial statements include the historical financial position and results of operations of Solaris LLC, our predecessor.

The following selected historical financial and operating information was derived from our Consolidated Financial Statements as of and for the years ended December 31, 2019, 2018, 2017, 2016 and 2015. The selected financial data should be read in conjunction with the Company’s Consolidated Financial Statements and the accompanying Notes to Consolidated Financial Statements in “Part II, Item 7. “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and “Part II, Item 8. “Financial Statements and Supplementary Data.”

Item 7.      Management’s Discussion and Analysis of Financial Condition and Results of Operations

Unless the context requires otherwise, references in this Annual Report to the "Company," "Solaris," "we," "us" and "our" refer to (i) Solaris Oilfield Infrastructure, LLC ("Solaris LLC") and its consolidated subsidiaries prior to the completion of our initial public offering and (ii) Solaris Oilfield Infrastructure, Inc. ("Solaris Inc.") and its consolidated subsidiaries following the completion of our initial public offering. The following discussion and analysis of our financial condition and results of operations should be read in conjunction with the accompanying financial statements and related notes.  This section of this Form 10-K generally discusses 2019 and 2018 items and year-to-year comparisons between 2019 and 2018. Discussions of 2017 items and year-to-year comparisons between 2018 and 2017 that are not included in this Form 10-K can be found in “Part II, Item 7. “Management’s Discussion and Analysis of Financial Conditions and Results of Operations” of our Annual Report on Form 10-K for the fiscal year ended December 31, 2018. The following discussion contains “forward-looking statements” that reflect our plans, estimates, beliefs and expected performance. Our actual results may differ materially from those anticipated as discussed in these forward-looking statements as a result of a variety of risks and uncertainties, including those described above in “Cautionary Statement Regarding Forward-Looking Statements” and “Risk Factors” included elsewhere in this Annual Report, all of which are difficult to predict. In light of these risks, uncertainties and assumptions, the forward-looking events discussed may not occur. We assume no obligation to update any of these forward-looking statements except as otherwise required by law.

Overview

Solaris LLC was formed in July 2014. Solaris Inc. was incorporated as a Delaware corporation in February 2017 for the purpose of completing an initial public offering of equity in May 2017 (the “IPO” or the “Offering”) and related transactions. On May 11, 2017, in connection with the IPO, Solaris Inc. became a holding company whose sole material asset consists of units in Solaris LLC (“Solaris LLC Units”). Solaris Inc. became the managing member of Solaris LLC and is responsible for all operational, management and administrative decisions relating to Solaris LLC’s business and consolidates the financial results of Solaris LLC and its subsidiaries.

Executive Summary

We design, manufacture and rent specialized equipment which combined with field technician support, logistics services and our software solutions, enables us to provide a service offering that helps oil and natural gas operators and their suppliers drive efficiencies and reduce costs during the completion phase of well development. The majority of our revenue is currently derived from rental and services related to our patented mobile proppant and chemical management systems that unload, store and deliver proppant used in hydraulic fracturing of oil and natural gas wells, as well as coordinating the delivery of proppant and chemicals to the well site. Our systems are deployed in most of the active oil and natural gas basins in the United States.

In 2018 and 2019, we introduced new equipment and service enhancements, which we believe will help us maintain and expand our total revenue opportunity in the United States completions space. We introduced our mobile chemical management system to the market in late 2018 and we began commercializing the offering in 2019. Design enhancements introduced in 2018 include our AutoHopper™ technology, which we are deploying across our fleet to automate the delivery of proppant into the blender, and the latest version of our Solaris Lens® software, available on our systems and allows customers to view the entire last mile proppant supply chain in real time.

Recent Trends and Outlook

Demand for our products and services is predominantly influenced by the level of oil and natural gas well drilling and completion activity, which, in turn, is determined by the current and anticipated profitability of developing oil and natural gas reserves.

The Baker Hughes US Land rig count decreased 9% to 920 average rigs in 2019 from 1,013 average rigs in 2018. This compares to a 1% decline to an average of 110 fully utilized mobile proppant systems rented during 2019 compared to 2018. The lower decline rate in demand for our systems during 2019 relative to the drilling rig count was due to investments made to grow our service fleet during 2018. During 2019 we reduced investment in fleet growth in response to the slowing activity.

Going forward, absent significant changes in markets share, we would expect our activity to follow the general trends of the US land drilling and completion activity.

Initial 2020 capital budgets announced by oil and gas operators indicate spending on US drilling and completion activity could be down 10-15% in 2020 relative to 2019.

Our service fleet currently consists of 166 mobile proppant management systems and 14 mobile chemical management systems, which is a new service offering for the Company. We do not expect to build any additional proppant systems for the remainder of 2020.

How We Generate Revenue

We generate the majority of our revenue through the rental of our systems and related services, including transportation of proppant to the well site, transportation of our systems field supervision and support, as well as coordinating the delivery of proppant and chemicals to the well site. The system rental and provision of related services are performed under a variety of contract structures, primarily master service agreements as supplemented by individual work orders detailing statements of work, pricing agreements and specific quotes. The master service agreements generally establish terms and conditions for the provision of our systems and service on a well site, indemnification, damages, confidentiality, intellectual property protection and payment terms and provisions. The rentals and services are generally priced based on prevailing market conditions at the time the services are provided, giving consideration to the specific requirements and activity levels of the customer. We typically charge our customers for the rental of our systems and related services on a monthly basis.

In early 2018, we began generating revenue for our transloading services at our independent, transload facility in Oklahoma (the “Kingfisher Facility”). We generally charge our customers a throughput fee for rail-to-truck transloading and high-efficiency sand silo storage and transloading services at the Kingfisher Facility.

Finally, we generate revenue through our Railtronix® inventory management software. We generally charge our customers a throughput fee to monitor proppant that is loaded into a railcar, stored at a transload facility or loaded into a truck at either a transload facility or mine.

Costs of Conducting Our Business

The principal costs associated with operating our business are:

Our cost of system rental (excluding depreciation and amortization) consists primarily of the costs of maintaining our equipment, developing and maintaining our Solaris Lens software, as well as insurance and property taxes related to our equipment.

Our cost of system services (excluding depreciation and amortization) consists primarily of direct labor costs, and related travel and lodging expenses, and system transportation costs. A large portion of our cost of system services (excluding depreciation and amortization) are variable based on the number of systems deployed with customers.

Our cost of transloading services (excluding depreciation and amortization) consists primarily of direct labor costs, fuel, utilities and maintenance.

Our cost of software inventory management services (excluding depreciation and amortization) consists primarily of direct labor and software subscriptions.

Our depreciation and amortization expense primarily consists of the depreciation expense related to our systems and related manufacturing machinery and equipment as well as rail and transloading equipment. The costs to build our systems, including any upgrades, are capitalized and depreciated over a life ranging from three to 15 years. The costs to build our rail and transloading storage assets are capitalized and depreciated over a life of 15 to 30 years.

Our selling, general and administrative expenses are comprised of the salaries and related benefits for several functional areas of our organization, including sales and commercial research and development accounting and corporate administrative, as well as office rent, marketing expenses and third-party professional service providers.

How We Evaluate Our Operations

We use a variety of qualitative, operational and financial metrics to assess our performance. Among other measures, management considers revenue, revenue days, fully utilized system count, tons transloaded, EBITDA and Adjusted EBITDA.

We analyze our revenue by comparing actual monthly revenue to our internal projections for a given period and to prior periods to assess our performance. We also assess our revenue in relation to the number of systems we have

deployed to customers and the amount of proppant and chemicals transloaded at our Kingfisher Facility from period to period.

Fully Utilized System Count

The fully utilized system count is calculated as the combined number of days that a system generates revenue in a given period divided by the number of days in that period. We view the fully utilized system count as the best measure to track utilization and changes in rental activity on a period-over-period basis as the majority of our systems are rented on a monthly basis.

Tons Transloaded

We view tons transloaded as an important indicator of our performance. We calculate the number of tons transloaded as the combined number of proppant tons and chemicals that are transloaded at our Kingfisher Facility in a period. We assess the number of tons transloaded from period to period in relation to prior periods and contracted minimum volumes.

EBITDA and Adjusted EBITDA

We view EBITDA and Adjusted EBITDA as important indicators of performance. We define EBITDA as net income, plus (i) depreciation and amortization expense, (ii) interest expense and (iii) income tax expense, including franchise taxes. We define Adjusted EBITDA as EBITDA plus (i) stock-based compensation expense and (ii) certain non-cash items and extraordinary, unusual or non-recurring gains, losses or expenses.

Note Regarding Non-GAAP Financial Measures

EBITDA and Adjusted EBITDA are not financial measures presented in accordance with accounting principles generally accepted in the United States (“GAAP”). We believe that the presentation of these non-GAAP financial measures will provide useful information to investors in assessing our financial condition and results of operations. Net income (loss) is the GAAP measure most directly comparable to EBITDA and Adjusted EBITDA. Our non-GAAP financial measures should not be considered as alternatives to the most directly comparable GAAP financial measure. Each of these non-GAAP financial measures has important limitations as analytical tools because they exclude some but not all items that affect the most directly comparable GAAP financial measures. You should not consider EBITDA or Adjusted EBITDA in isolation or as substitutes for an analysis of our results as reported under GAAP. Because EBITDA and Adjusted EBITDA may be defined differently by other companies in our industry, our definitions of these non-GAAP financial measures may not be comparable to similarly titled measures of other companies, thereby diminishing their utility.

Factors Impacting Comparability of Our Financial Results

Our future results of operations may not be comparable to the historical results of operations of our accounting predecessor, Solaris LLC, for the periods presented, primarily for the reasons described below.

Corporate Reorganization

The historical consolidated financial statements included in this report are based on the financial statements of our accounting predecessor, Solaris LLC, prior to our corporate reorganization consummated in connection with the IPO. As a result, the historical consolidated financial data may not give you an accurate indication of what our actual results would have been if the corporate reorganization had been completed at the beginning of the periods presented or of what our future results of operations are likely to be. In connection with the IPO and the transactions related thereto, Solaris Inc. became a holding company whose sole material asset consists of Solaris LLC Units. Solaris Inc. is the managing member of Solaris LLC and is responsible for all operational, management and administrative decisions relating to Solaris LLC’s business and consolidates the financial results of Solaris LLC and its subsidiaries.

In addition, in connection with the IPO, Solaris Inc. entered into a tax receivable agreement (the “Tax Receivable Agreement”) with the members of Solaris LLC immediately prior to the IPO (collectively, the “Original Investors”) (each such person and any permitted transferee, a “TRA Holder,” and together, the “TRA Holders”) on May 17, 2017. This agreement generally provides for the payment by Solaris Inc. to each TRA Holder of 85% of the net cash savings, if any, in United States federal, state and local income tax and franchise tax that Solaris Inc. actually realizes (computed using simplifying assumptions to address the impact of state and local taxes) or is deemed to realize in certain circumstances in periods after the IPO as a result of (i) certain increases in tax basis that occur as a result of Solaris Inc. acquisition (or deemed acquisition for United States federal income tax purposes) of all or a portion of such TRA Holder’s Solaris LLC Units in connection with the IPO or pursuant to the exercise of the Redemption Right or the Call Right (each as defined in Solaris LLC’s Second Amended and Restated Limited Liability Company Agreement (the “Solaris LLC Agreement”)) and (ii) imputed interest deemed to be paid by Solaris Inc. as a result of, and additional tax basis arising from, any payments Solaris Inc. makes under the Tax Receivable Agreement. Solaris will retain the benefit of the remaining 15% of these cash savings.

We anticipate that we will account for the effects of these increases in tax basis and associated payments under the Tax Receivable Agreement arising from any future redemptions of Solaris LLC Units from our Original Investors as follows:

All of the effects of changes in any of our estimates after the date of the exchange will be included in net income for the period in which those changes occur. Similarly, the effect of subsequent changes in the enacted tax rates will be included in net income for the period in which the change occurs.

Fleet Growth

We have experienced significant growth over the past six years. Since commencing operations in April 2014, we have grown our fleet from two systems to 166 mobile proppant management systems and 14 mobile chemical management systems in our fleet as of December 31, 2019 and increased the number of major oil and natural gas basins in which our systems are deployed.

Income Taxes

Solaris Inc. is a corporation and, as a result, is subject to United States federal, state and local income taxes. Although Solaris LLC is subject to franchise tax in the State of Texas (at less than 1% of modified pre-tax earnings) it passes through its taxable income to its owners, including Solaris Inc., for United States federal and other state and local income tax purposes and thus is not generally subject to United States federal income tax or other state or local income taxes. Accordingly, the financial data attributable to Solaris LLC prior to the IPO contains no provision for United States federal income tax or income taxes in any state or locality other than franchise tax in the State of Texas.

Results of Operations

Year Ended December 31, 2019 Compared to Year Ended December 31, 2018

Revenue

System Rental Revenue. Our system rental revenue decreased $1.6 million, or 1%, to $142.0 million for the year ended December 31, 2019 compared to $143.6 million for the year ended December 31, 2018.

System Services Revenue. Our system services revenue increased $20.9 million, or 49%, to $63.9 million for the year ended December 31, 2019 compared to $43.0 million for the year ended December 31, 2018. System services revenue increased primarily due to an increase in services provided to coordinate proppant delivered into our systems.

Transloading Services Revenue. Our transloading services revenue increased $26.0 million, or 321%, to $34.1 million for the year ended December 31, 2019 compared to $8.1 million for the year ended December 31, 2018. The increase was primarily due to the recognition of $27.1 million of deferred revenue, partially offset by a decrease in the number of tons transloaded at our Kingfisher Facility. Deferred revenue consisted of a $26.0 partial termination payment

received in December 2018 in accordance with a contract modification which was accounted for prospectively and a final termination payment of $1.7 recorded as accounts receivable and recognized as revenue throughout the fourth quarter of 2019. The Company recognized the remaining $27.1 million of deferred revenue as revenue from transloading services in the year ended December 31, 2019 due to the full termination of the contract, resulting in no remaining deferred revenue as of December 31, 2019. The Company recognized $0.5 million of deferred revenue as Revenue from transloading services in the year ended December 31, 2018. We generally charge our customers a throughput fee for providing rail-to-truck transloading and high-efficiency sand silo storage and transloading services in relation to proppant and chemicals delivered to the Kingfisher Facility.

Operating Expenses

Total operating costs and expenses for the years ended December 31, 2019 and 2018 were $133.8 million and $97.9 million, respectively, which represented 55% and 50% of total revenue, respectively. Total operating costs and expenses increased year-over-year primarily as a result of the deployment of additional systems to our customers in early 2019 and services thereof, coupled with the related increase in depreciation and amortization expense. The fully utilized proppant system equivalent count of 110 for the year ended December 31, 2019 was relatively unchanged as compared to 111 for the year ended December 31, 2018. Total operating costs as a percentage of total revenue increased as a result of an increase in system services expense in relation to proppant delivery coordination services provided. Additional details regarding the changes in operating expenses are presented below.

Cost of System Rental (excluding depreciation and amortization). Cost of system rental increased $2.5 million, or 35%, to $9.7 million for the year ended December 31, 2019 compared to $7.2 million for the year ended December 31, 2018, excluding depreciation and amortization expense. Cost of system rental as a percentage of system rental revenue was 7% and 5% for the years ended December 31, 2019 and 2018, respectively. Cost of system rental increased primarily due to an increase in ad valorem and other fixed costs as a result of an increase in the number of systems that were added to our fleet. Repairs and maintenance costs also increased due to maintaining a larger fleet.

Cost of system rental including depreciation and amortization expense increased $9.9 million, or 45%, to $32.1 million for the year ended December 31, 2019 compared to $22.2 million for the year ended December 31, 2018. This increase was primarily attributable to the increase in in depreciation expense related to the additional systems that were manufactured and added to our fleet.

Cost of System Services (excluding depreciation and amortization). Cost of system services increased $24.1 million, or 48%, to $74.7 million for the year ended December 31, 2019 compared to $50.6 million for the year ended December 31, 2018. This increase was primarily due to an increase of $23.1 million in relation to services provided to coordinate proppant delivered to systems.

For the year ended December 31, 2019, the cost of system services as a percentage of system services revenue decreased to 117% compared to 118% the year ended December 31, 2018.

Cost of system services including depreciation and amortization expense increased $24.4 million, or 47%, to $76.3 million for the year ended December 31, 2019 compared to $51.9 million for the year ended December 31, 2018. This increase was primarily attributable to the factors mentioned above.

Cost of Transloading Services (excluding depreciation and amortization). Cost of transloading services increased $0.4 million,  or 18% to $2.6 million for the year ended December 31, 2019 compared to $2.2 million for the year ended December 31, 2018, primarily due to increases in insurance, fuel, utilities and maintenance related to increased transloading services activity at our Kingfisher Facility.

Cost of transloading services including depreciation and amortization expense increased $1.0 million,  or 31%, to $4.2 million for the year ended December 31, 2019 compared to $3.2 million for the year ended December 31, 2018, due to depreciation expense related to our transloading facility and equipment which commenced upon completion of the construction of the Kingfisher Facility in the third quarter of 2018.

Cost of Inventory Software Services (excluding depreciation and amortization). Cost of inventory software services, which decreased $0.2 million, or 25%, to $0.6 million for the year ended December 31, 2019 compared to $0.8 million for the year ended December 31, 2018 primarily includes labor and software subscription costs related to Railtronix inventory management software.

Cost of inventory software services including depreciation and amortization expense decreased  $0.2 million, or 13%, to $1.4 million for the year ended December 31, 2019 compared to $1.6 million for the year ended December 31, 2018. This decrease was primarily attributable to the labor and software subscription costs. Amortization consists of customer relationships, a non-competition agreement and software acquired in the acquisition of Railtronix.

Depreciation and Amortization. Depreciation and amortization increased $8.5 million, or 46%, to $26.9 million for the year ended December 31, 2019 compared to $18.4 million for the year ended December 31, 2018. This increase was primarily attributable to additional depreciation expense related to additional systems that were manufactured and added to our fleet and our transloading facility and equipment placed in service in 2018.

Selling, General and Administrative Expenses (excluding depreciation and amortization). Selling, general and administrative expenses increased $1.8 million, or 11%, to $18.6 million for the year ended December 31, 2019 compared to $16.8 million for the year ended December 31, 2018 due primarily to an increase in stock-based compensation, salaries and bad debt expense.

Other Operating Expenses. Other operating expenses decreased $1.2 million, or 67% to $0.6 million for the year ended December 31, 2019 compared to the $1.8 million for the year ended December 31, 2018. Other operating expenses in the year ended December 31, 2019 primarily relate to $0.5 million loss on disposal of assets. Other operating expenses in the year ended December 31, 2018 were primarily related to certain performance-based cash awards totaling $1.7 million in connection with the purchase of Railtronix upon the achievement of certain financial milestones.

Provision for Income Taxes.  During the year ended December 31, 2019, we recognized a combined United States federal and state provision for income taxes of $16.9 million, an increase of $4.0 million as compared to $13.0 million we recognized during the year ended December 31, 2018.  This increase was attributable to higher operating income. The effective combined United States federal and state income tax rates were 15.8% and 13.1% for the years ended December 31, 2019 and 2018, respectively. For the years ended December 31, 2019 and 2018, our effective tax rate differed from the statutory rate primarily due to Solaris LLC’s passthrough treatment for United States federal income tax purposes.  

Net Income

Net income increased $4.4 million, or 5% to $90.4 million for the year ended December 31, 2019 compared to $86.0 million for the year ended December 31, 2018, due to the changes in revenues and expenses discussed above.

Reconciliation of Non-GAAP Financial Measures

We view EBITDA and Adjusted EBITDA as important indicators of performance. We define EBITDA as net income, plus (i) depreciation and amortization expense, (ii) interest expense and (iii) income tax expense, including franchise taxes. We define Adjusted EBITDA as EBITDA plus (i) stock-based compensation expense and (ii) certain non-cash items and extraordinary, unusual or non-recurring gains, losses or expenses.

We believe that our presentation of EBITDA and Adjusted EBITDA will provide useful information to investors in assessing our financial condition and results of operations. Net income is the GAAP measure most directly comparable to EBITDA and Adjusted EBITDA. EBITDA and Adjusted EBITDA should not be considered alternatives to net income presented in accordance with GAAP. Because EBITDA and Adjusted EBITDA may be defined differently by other companies in our industry, our definitions of EBITDA and Adjusted EBITDA may not be comparable to similarly

titled measures of other companies, thereby diminishing their utility. The following table presents a reconciliation of Net income to EBITDA and Adjusted EBITDA for each of the periods indicated.