Exhibit 99.1

INDEX TO FINANCIAL STATEMENT

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Stockholders of

Kayne Anderson Acquisition Corp.

We have audited the accompanying balance sheet of Kayne Anderson Acquisition Corp. (the “Company”), as of April 4, 2017. This balance sheet is the responsibility of the Company’s management. Our responsibility is to express an opinion on this balance sheet based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the balance sheet is free of material misstatement. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. Our audit included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the balance sheet, assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall balance sheet presentation. We believe that our audit provides a reasonable basis for our opinion.

In our opinion, the balance sheet referred to above presents fairly, in all material respects, the financial position of Kayne Anderson Acquisition Corp. as of April 4, 2017, in conformity with accounting principles generally accepted in the United States of America.

WithumSmith+Brown, PC

New York, New York

April 10, 2017

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KAYNE ANDERSON ACQUISITION CORP.

BALANCE SHEET

April 4, 2017

See accompanying notes to balance sheet

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KAYNE ANDERSON ACQUISITION CORP.

NOTES TO BALANCE SHEET

Note 1—Description of Organization and Business Operations

Organization and General

Kayne Anderson Acquisition Corp. (the “Company”) was incorporated in Delaware on December 12, 2016. The Company was formed for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses (the “Initial Business Combination”). The Company is an “emerging growth company,” as defined in Section 2(a) of the Securities Act of 1933, as amended, or the “Securities Act,” as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”).

At April 4, 2017, the Company had not commenced any operations. All activity for the period from December 12, 2016 (date of inception) through April 4, 2017 relates to the Company’s formation and the initial public offering (“Public Offering”) described below. The Company will not generate any operating revenues until after completion of its Initial Business Combination, at the earliest. The Company will generate non-operating income in the form of interest income on cash and cash equivalents from the proceeds derived from the Public Offering. The Company has selected December 31 as its fiscal year end.

Sponsor and Financing

The Company’s sponsor is Kayne Anderson Sponsor, LLC, a Delaware limited liability company (the “Sponsor”). The registration statement for the Company’s Public Offering (as described in Note 3) was declared effective by the United States Securities and Exchange Commission (the “SEC”) on March 29, 2017. The Company intends to finance its Initial Business Combination with proceeds from the $350,000,000 Public Offering ($402,500,000 if the underwriter’s 45 day overallotment option is exercised in full—Note 3) and a $9,000,000 private placement ($10,050,000 if the underwriters’ overallotment option is exercised in full—Note 4). Upon the closing of the Public Offering and the private placement, $350,000,000 was deposited in a trust account with American Stock Transfer & Trust Company acting as trustee (the “Trust Account”) as discussed below. If the underwriters exercise their 45 day overallotment, then the private placement will be increased by an amount equal to 2.0% of the proceeds so that the gross proceeds (if any) from the exercise of the underwriters’ 45 day over-allotment option will be added to the Trust Account.

The Trust Account

The proceeds held in the Trust Account will be invested only in U.S. government treasury bills with a maturity of one hundred eighty (180) days or less or in money market funds that meet certain conditions under Rule 2a-7 under the Investment Company Act of 1940 and that invest only in direct U.S. government obligations. Funds will remain in the Trust Account until the earlier of (i) the consummation of the Initial Business Combination or (ii) the distribution of the Trust Account proceeds as described below. The remaining proceeds outside the Trust Account may be used to pay for business, legal and accounting due diligence on prospective acquisitions and continuing general and administrative expenses.

The Company’s amended and restated certificate of incorporation provides that, other than the withdrawal of interest to pay taxes, if any, none of the funds held in the Trust Account will be released until the earlier of: (i) the completion of the Initial Business Combination; (ii) the redemption of any shares of Class A common stock included in the Units (the “Public Shares”) sold in the Public Offering that have been properly tendered in connection with a stockholder vote to amend the Company’s certificate of incorporation to modify the substance or timing of its obligation to redeem 100% of such shares of Class A common stock if it does not complete the Initial Business Combination within 24 months from the closing of the Public Offering; and (iii) the redemption of 100% of the shares of Class A common stock included in the Units sold in the Public Offering if the Company is unable to complete an Initial Business Combination within 24 months from the closing of the Public Offering (subject to the requirements of law). The proceeds deposited in the Trust Account could become subject to the claims of the Company’s creditors, if any, which could have priority over the claims of the Company’s public stockholders.

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Initial Business Combination

The Company’s management has broad discretion with respect to the specific application of the net proceeds of the Public Offering, although substantially all of the net proceeds of the Public Offering are intended to be generally applied toward consummating an Initial Business Combination. The Initial Business Combination must occur with one or more target businesses that together have an aggregate fair market value of at least 80% of the assets held in the Trust Account (excluding the deferred underwriting commissions and taxes payable on income earned on the Trust Account) at the time of the agreement to enter into the Initial Business Combination. Furthermore, there is no assurance that the Company will be able to successfully effect an Initial Business Combination.

The Company, after signing a definitive agreement for an Initial Business Combination, will either (i) seek stockholder approval of the Initial Business Combination at a meeting called for such purpose in connection with which stockholders may seek to redeem their shares, regardless of whether they vote for or against the Initial Business Combination, for cash equal to their pro rata share of the aggregate amount then on deposit in the Trust Account as of two business days prior to the consummation of the Initial Business Combination, including interest but less taxes payable, or (ii) provide stockholders with the opportunity to sell their Public Shares to the Company by means of a tender offer (and thereby avoid the need for a stockholder vote) for an amount in cash equal to their pro rata share of the aggregate amount then on deposit in the Trust Account as of two business days prior to the consummation of the Initial Business Combination, including interest but less taxes payable. The decision as to whether the Company will seek stockholder approval of the Initial Business Combination or will allow stockholders to sell their Public Shares in a tender offer will be made by the Company, solely in its discretion, and will be based on a variety of factors such as the timing of the transaction and whether the terms of the transaction would otherwise require the Company to seek stockholder approval, unless a vote is required by law or under NASDAQ rules. If the Company seeks stockholder approval, it will complete its Initial Business Combination only if a majority of the outstanding shares of common stock voted are voted in favor of the Initial Business Combination. However, in no event will the Company redeem its Public Shares in an amount that would cause its net tangible assets to be less than $5,000,001 upon consummation of the Initial Business Combination. In such case, the Company would not proceed with the redemption of its Public Shares and the related Initial Business Combination, and instead may search for an alternate Initial Business Combination.

If the Company holds a stockholder vote or there is a tender offer for shares in connection with an Initial Business Combination, a public stockholder will have the right to redeem its shares for an amount in cash equal to its pro rata share of the aggregate amount then on deposit in the Trust Account as of two business days prior to the consummation of the Initial Business Combination, including interest but less taxes payable. As a result, such shares of Class A common stock have been recorded at redemption amount and classified as temporary equity on the accompanying balance sheet, in accordance with the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 480, “Distinguishing Liabilities from Equity.”

Pursuant to the Company’s amended and restated certificate of incorporation, if the Company is unable to complete the Initial Business Combination within 24 months from the closing of the Public Offering, the Company will (i) cease all operations except for the purpose of winding up, (ii) as promptly as reasonably possible but not more than ten business days thereafter, subject to lawfully available funds therefor, redeem the Public Shares, at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account including interest earned on the funds held in the Trust Account and not previously released to us to pay the Company’s franchise and income taxes (less up to $100,000 of interest to pay dissolution expenses), divided by the number of then outstanding Public Shares, which redemption will completely extinguish public stockholders’ rights as stockholders (including the right to receive further liquidating distributions, if any), subject to applicable law, and (iii) as promptly as reasonably possible following such redemption, subject to the approval of the Company’s remaining stockholders and the Company’s board of directors, dissolve and liquidate, subject in each case to the Company’s obligations under Delaware law to provide for claims of creditors and the requirements of other applicable law. The Sponsor and the Company’s officers and directors have entered into a

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letter agreement with the Company, pursuant to which they agreed to waive their rights to liquidating distributions from the Trust Account with respect to any Founder Shares (as defined below) held by them if the Company fails to complete the Initial Business Combination within 24 months of the closing of the Public Offering. However, if the Sponsor or any of the Company’s directors, officers or affiliates acquire shares of Class A common stock in or after the Public Offering, they will be entitled to liquidating distributions from the Trust Account with respect to such shares if the Company fails to complete the Initial Business Combination within the prescribed time period.

In the event of a liquidation, dissolution or winding up of the Company after an Initial Business Combination, the Company’s stockholders are entitled to share ratably in all assets remaining available for distribution to them after payment of liabilities and after provision is made for each class of stock, if any, having preference over the common stock. The Company’s stockholders have no preemptive or other subscription rights. There are no sinking fund provisions applicable to the common stock, except that the Company will provide its stockholders with the opportunity to redeem their Public Shares for cash equal to their pro rata share of the aggregate amount then on deposit in the Trust Account, upon the completion of the Initial Business Combination, subject to the limitations described herein.

Note 2—Summary of Significant Accounting Policies

Basis of Presentation

The balance sheet of the Company is presented in U.S. dollars in conformity with accounting principles generally accepted in the United States of America (“GAAP”).

Emerging Growth Company

Section 102(b)(1) of the JOBS Act exempts emerging growth companies from being required to comply with new or revised financial accounting standards until private companies (that is, those that have not had a Securities Act registration statement declared effective or do not have a class of securities registered under the Exchange Act) are required to comply with the new or revised financial accounting standards. The JOBS Act provides that a company can elect to opt out of the extended transition period and comply with the requirements that apply to non-emerging growth companies but any such an election to opt out is irrevocable. The Company has elected not to opt out of such extended transition period which means that when a standard is issued or revised and it has different application dates for public or private companies, the Company, as an emerging growth company, can adopt the new or revised standard at the time private companies adopt the new or revised standard.

This may make comparison of the Company’s financial statement with another public company which is neither an emerging growth company nor an emerging growth company which has opted out of using the extended transition period difficult or impossible because of the potential differences in accounting standards used.

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Concentration of Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist of cash accounts in a financial institution, which, at times, exceed the Federal Depository Insurance Coverage of $250,000. The Company has not experienced losses on these accounts and management believes the Company is not exposed to significant risks on such accounts.

Financial Instruments

The fair value of the Company’s assets and liabilities, which qualify as financial instruments under the FASB ASC 820, “Fair Value Measurements and Disclosures,” approximates the carrying amounts represented in the balance sheet.

Use of Estimates

The preparation of a balance sheet in conformity with GAAP requires the Company’s management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the balance sheet. Actual results could differ from those estimates.

Offering Costs

The Company complies with the requirements of the FASB ASC 340-10-S99-1 and SEC Staff Accounting Bulletin Topic 5A—“Expenses of Offering.” Offering costs of approximately $19,900,000, consisting principally of underwriter discounts of $19,250,000 (including approximately $12,250,000 of which payment is deferred) and approximately $650,000 of professional, printing, filing, regulatory and other costs have been charged to additional paid in capital upon completion of the Public Offering.

Income Taxes

The Company follows the asset and liability method of accounting for income taxes under FASB ASC 740, “Income Taxes.” Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statements carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that included the enactment date. Valuation allowances are established, when necessary, to reduce deferred tax assets to the amount expected to be realized.

FASB ASC 740 prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more likely than not to be sustained upon examination by taxing authorities. There were no unrecognized tax benefits as of April 4, 2017. The Company recognizes accrued interest and penalties related to unrecognized tax benefits as income tax expense. No amounts were accrued for the payment of interest and penalties at April 4, 2017. The Company is currently not aware of any issues under review that could result in significant payments, accruals or material deviation from its position. The Company is subject to income tax examinations by major taxing authorities since inception.

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Redeemable Common Stock:

As discussed in Note 3, all of the 35,000,000 common shares sold as part of a Unit in the Public Offering contain a redemption feature which allows for the redemption of common shares under the Company’s Liquidation or Tender offer/stockholder/approval provisions. In accordance with FASB ASC 480, redemption provisions not solely within the control of the Company require the security to be classified outside of permanent equity. Ordinary liquidation events, which involve the redemption and liquidation of all of an entity’s equity instruments, are excluded from the provisions of FASB ASC 480. Although the Company did not specify a maximum redemption threshold, its charter provides that in no event will it redeem its Public Shares in an amount that would cause its net tangible assets (stockholders’ equity) to be less than $5,000,001.

The Company recognizes changes in redemption value immediately as they occur and will adjust the carrying value of the security to equal the redemption value at the end of each reporting period. Increases or decreases in the carrying amount of redeemable common stock shall be affected by charges against additional paid-in capital.

Accordingly, at April 4, 2017, 33,413,431 of the 35,000,000 Public Shares were classified outside of permanent equity at its redemption value.

Recent Accounting Pronouncements

In August 2014, FASB issued ASU 2014-15, “Presentation of Financial Statements—Going Concern” (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. ASU 2014-15 provides guidance on management’s responsibility to evaluate whether there is substantial doubt about an organization’s ability to continue as a going concern and to provide related footnote disclosures. For each reporting period, management will be required to evaluate whether there are conditions or events that raise substantial doubt about a company’s ability to continue as a going concern within one year from the date the financial statements are issued. The amendments in ASU 2014-15 are effective for annual reporting periods ending after December 15, 2016 and for annual and interim periods thereafter. Early adoption is permitted. The Company has adopted the methodologies prescribed by ASU 2014-15 and it did not have a material effect on its financial position or results of operations.

The Company’s management does not believe that any other recently issued, but not yet effective, accounting pronouncements, if currently adopted, would have a material effect on the Company’s financial statements.

Note 3—Public Offering

On April 4, 2017, the Company closed its Public Offering of 35,000,000 units at a price of $10.00 per unit (the “Units”). The Sponsor purchased an aggregate of 6,000,000 warrants at a price of $1.50 per warrant in a private placement that closed simultaneously with the Public Offering.

Each Unit consists of one share of the Company’s Class A common stock, $0.0001 par value, and one-third of one warrant (each, a “Warrant” and, collectively, the “Warrants”). Each whole Warrant entitles the holder to purchase one share of Class A common stock at a price of $11.50 per share. No fractional warrants will be issued upon separation of the Units and only whole Warrants will trade. Each Warrant will become exercisable on the later of 30 days after the completion of the Company’s Initial Business Combination or 12 months from the closing of the Public Offering, and will expire five years after the completion of the Company’s Initial Business Combination or earlier upon redemption or liquidation. Once the Warrants become exercisable, the Company may redeem the outstanding Warrants in whole and not in part at a price of $0.01 per Warrant upon a minimum of 30 days’ prior written notice of redemption, if and only if the last sale price of the Company’s Class A common stock equals or exceeds $18.00 per share for any 20 trading days within a 30-trading day period ending on the third trading day prior to the date on which the Company sent the notice of redemption to the Warrant holders.

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The Company granted the underwriters a 45-day option to purchase up to 5,250,000 additional Units to cover any over-allotments at $10.00 per Unit less the underwriting discounts and commissions. The Units that may be issued in connection with the over-allotment option will be identical to the Units issued in the Public Offering.

The Company paid an underwriting discount of 2.0% of the per Unit offering price to the underwriters at the closing of the Public Offering, with an additional fee (the “Deferred Discount”) of 3.5% of the gross offering proceeds payable upon the Company’s completion of an Initial Business Combination. The Deferred Discount will become payable to the underwriters from the amounts held in the Trust Account solely in the event the Company completes its Initial Business Combination. As of April 4, 2017, the Company recorded a deferred discount of $12,250,000 on the accompanying balance sheet.

Note 4—Related Party Transactions

Founder Shares

During December 2016, the Sponsor purchased 10,062,500 shares of Class B convertible common stock (the “Founder Shares”) for an aggregate price of $25,000, or approximately $0.002 per share. As used herein, unless the context otherwise requires, “Founder Shares” shall be deemed to include the shares of Class A common stock issuable upon conversion thereof. The Founder Shares are identical to the Class A common stock included in the Units sold in the Public Offering except that the Founder Shares automatically convert into shares of Class A common stock at the time of the Company’s Initial Business Combination and are subject to certain transfer restrictions, as described in more detail below. Holders of Founder Shares may also elect to convert their shares of Class B convertible common stock into an equal number of shares of Class A common stock, subject to adjustment as provided above, at any time. The Sponsor has agreed to forfeit up to 1,312,500 Founder Shares to the extent that the 45 day over-allotment option is not exercised in full by the underwriters. The forfeiture will be adjusted to the extent that the 45 day over-allotment option is not exercised in full by the underwriters so that the Founder Shares will represent 20.0% of the Company’s issued and outstanding shares after the Public Offering.

The Company’s initial stockholders have agreed, subject to limited exceptions, not to transfer, assign or sell any of their Founder Shares until the earlier to occur of: (A) one year after the completion of the Initial Business Combination or (B) subsequent to the Initial Business Combination, (x) if the last sale price of the Company’s Class A common stock equals or exceeds $12.00 per share (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like) for any 20 trading days within any 30-trading day period commencing at least 150 days after the Initial Business Combination, or (y) the date on which we complete a liquidation, merger, stock exchange or other similar transaction that results in all of the Company’s stockholders having the right to exchange their shares of common stock for cash, securities or other property.

Private Placement Warrants

Upon the closing of the Public Offering on April 4, 2017, the Sponsor purchased an aggregate of 6,000,000 private placement warrants (Sponsor has agreed to purchase 6,700,000 if the over-allotment option is exercised in full) at a price of $1.50 per whole warrant (approximately $9,000,000 in the aggregate or $10,050,000 in the aggregate if the over-allotment option is exercised in full) in a private placement (the “Private Placement Warrants”). Each whole Private Placement Warrant is exercisable for one whole share of the Company’s Class A common stock at a price of $11.50 per share. A portion of the purchase price of the Private Placement Warrants was added to the proceeds from the Public Offering such that $350,000,000 (or $402,500,000 if the underwriters exercise their over-allotment option in full) will be held in the Trust Account. If the Initial Business Combination is not completed within 24 months from the closing of the Public Offering, the proceeds from the sale of the Private Placement Warrants held in the Trust Account will be used to fund the redemption of the Public Shares (subject to the requirements of applicable law) and the Private Placement Warrants will expire worthless. The Private Placement Warrants will be non-redeemable and exercisable on a cashless basis so long as they are held by the Sponsor or its permitted transferees.

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The Sponsor and the Company’s officers and directors have agreed, subject to limited exceptions, not to transfer, assign or sell any of their Private Placement Warrants until 30 days after the completion of the Initial Business Combination.

Registration Rights

The holders of Founder Shares, Private Placement Warrants and Warrants that may be issued upon conversion of working capital loans, if any, are entitled to registration rights (in the case of the Founder Shares, only after conversion of such shares to shares of Class A common stock) pursuant to a registration rights agreement. These holders will be entitled to certain demand and “piggyback” registration rights.

The holders of Founder Shares Private Placement Warrants and Warrants that may be issued upon conversion of working capital loans will not be able to sell these securities until the termination of the applicable lock-up period for the securities to be registered. The Company will bear the expenses incurred in connection with the filing of any such registration statements.

Related Party Loans

On December 23, 2016, the Sponsor agreed to loan the Company an aggregate of up to $300,000 to cover expenses related to the Public Offering pursuant to a promissory note (the “Note”). Between December 2016 and March 2017 the Company borrowed $265,000 from the Sponsor. These non-interest bearing loans were paid in full on April 4, 2017.

Administrative Support Agreement

The Company has agreed to pay an affiliate of the Sponsor a total of $5,000 per month for office space, utilities and secretarial and administrative support. Upon completion of the Initial Business Combination or the Company’s liquidation, the Company will cease paying these monthly fees.

Note 5—Stockholders’ Equity

Common Stock

The authorized common stock of the Company includes up to 200,000,000 shares of Class A common stock and 20,000,000 shares of Class B convertible common stock. If the Company enters into an Initial Business Combination, it may (depending on the terms of such an Initial Business Combination) be required to increase the number of shares of Class A common stock which the Company is authorized to issue at the same time as the Company’s stockholders vote on the Initial Business Combination, to the extent the Company seeks stockholder approval in connection with the Initial Business Combination. Holders of the Company’s common stock are entitled to one vote for each share of common stock. At April 4, 2017, there were 35,000,000 shares of Class A common stock, of which 33,413,431 were subject to redemption and 10,062,500 shares of Class B convertible common stock issued and outstanding.

Preferred Stock

The Company is authorized to issue 1,000,000 shares of preferred stock with such designations, voting and other rights and preferences as may be determined from time to time by the Company’s board of directors. At April 4, 2017, there were no shares of preferred stock issued or outstanding.

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