Exhibit 99.1

Rapid7 Announces Second Quarter 2017 Financial Results

Boston, MA – August 7, 2017 – Rapid7, Inc. (NASDAQ: RPD), a leading provider of analytics solutions for security and IT operations, today announced its financial results for the second quarter of 2017.

“Our second quarter results are a great validation that Rapid7 has the right strategy across our markets” said Corey Thomas, president and chief executive officer of Rapid7. “Our approach of providing multiple, high-impact analytics solutions based on the Rapid7 Insight platform is resonating with customers and driving consolidation of spending with Rapid7, as lean security and IT teams strive to leverage their scarce resources and improve their effectiveness. Our customers are also responding with higher usage and broader adoption of our platform-based products. We also further expanded our market opportunity with the addition of Komand’s orchestration and automation products in July.”

Second Quarter 2017 Financial Results

Recent Business Metrics and Highlights

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Third Quarter and Full-Year 2017 Guidance

Rapid7 anticipates total revenue, non-GAAP loss from operations, and non-GAAP net loss per share to be in the following ranges:

Third Quarter 2017:

The third quarter 2017 net loss per share calculation assumes 43.3 million basic and diluted weighted average common shares outstanding.

Updated Full-Year 2017:

The full-year net loss per share calculation assumes 43.0 million basic and diluted weighted average common shares outstanding. Guidance for the third quarter and full-year 2017 does not include any potential impact of foreign exchange gains or losses.

Non-GAAP guidance excludes estimates for stock-based compensation expense, amortization of acquired intangible assets, acquisition-related expenses and certain non-recurring items. Rapid7 has provided a reconciliation of historical non-GAAP financial measures to the most comparable GAAP measures in the financial statement tables included in this press release. A reconciliation of non-GAAP guidance measures to the most comparable GAAP measures is not available on a forward-looking basis.

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Conference Call and Webcast Information

Rapid7 will host a conference call today, August 7, 2017, to discuss its results at 4:30 p.m. Eastern Time. The call will be accessible by telephone at 888-223-6744 (domestic) or 303-223-4397 (international). The call will also be available live via webcast on the Company’s website at http://investors.rapid7.com. A telephone replay of the conference call will be available at 800-633-8284 or 402-977-9140 (access code 21854800) until August 10, 2017. A webcast replay will be available at http://investors.rapid7.com.

About Rapid7

Rapid7 (NASDAQ: RPD) is trusted by IT and security professionals around the world to manage risk, simplify modern IT complexity, and drive innovation. Rapid7 analytics transform today’s vast amounts of security and IT data into the answers needed to securely develop and operate sophisticated IT networks and applications. Rapid7 research, technology, and services drive vulnerability management, penetration testing, application security, incident detection and response, and log management for more than 6,500 organizations across more than 120 countries, including 39% of the Fortune 1000. To learn more about Rapid7 or join our threat research, visit www.rapid7.com.

Non-GAAP Financial Measures and Other Business Metrics

To supplement our consolidated financial statements, which are prepared and presented in accordance with generally accepted accounting principles in the United States, or GAAP, we provide investors with certain non-GAAP financial measures and other business metrics, which we believe are helpful to our investors. We use these non-GAAP financial measures and other business metrics for financial and operational decision-making purposes and as a means to evaluate period-to-period comparisons. We also use certain non-GAAP financial measures as performance measures under our executive bonus plan. We believe that these non-GAAP financial measures and other business metrics provide useful information about our operating results, enhance the overall understanding of past financial performance and future prospects and allow for greater transparency with respect to metrics used by our management in its financial and operational decision-making.

The presentation of non-GAAP financial information and other business metrics is not meant to be considered in isolation or as a substitute for the directly comparable financial measures prepared in accordance with GAAP. While our non-GAAP financial measures and other business metrics are an important tool for financial and operational decision-making and for evaluating our own operating results over different periods of time, we urge investors to review the reconciliation of these financial measures to the comparable GAAP financial measures included below, and not to rely on any single financial measure to evaluate our business.

Adjusted EBITDA. We define adjusted EBITDA as net loss before (1) interest income (expense), net, (2) other income (expense), net, (3) provision for income taxes, (4) depreciation expense, (5) amortization of intangible assets, (6) stock-based compensation expense, and (7) certain acquisition-related expenses. We believe that the use of adjusted EBITDA is useful to investors and other users of our financial statements in evaluating our operating performance because it provides them with an additional tool to compare business performance across companies and across periods. Adjusted EBITDA should not be considered as a substitute for other measures of financial performance reported in accordance with GAAP. There are limitations to using this non-GAAP financial measure, including that other companies may calculate this measure differently than we do, that it does not reflect our capital expenditures or future requirements for capital expenditures and that it does not reflect changes in, or cash requirements for, our working capital and excludes some items that are cash based.

We also monitor operating measures of non-GAAP gross profit, non-GAAP operating loss, non-GAAP net loss and non-GAAP net loss per share. These non-GAAP financial measures exclude the effect of stock-based compensation expense, amortization of acquired intangible assets, certain acquisition-related expenses, and certain non-recurring items. We believe that these non-GAAP financial measures provide useful information about our operating results, enhance the overall understanding of past financial performance and future prospects and allow for greater transparency with respect to metrics used by our management in its financial and operational decision-making. While our non-GAAP financial measures are an important tool for financial and operational decision-making and for evaluating our own operating results over different periods of time, you should review the reconciliation of our non-GAAP financial measures to the comparable GAAP financial measures included below, and not rely on any single financial measure to evaluate our business.

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Calculated Billings. Calculated billings is a key performance measure that we define as total revenue recognized in accordance with GAAP plus the change in deferred revenue from the beginning to the end of the period. We consider calculated billings to be a useful metric for management and investors, as a supplement to the corresponding GAAP measure of total revenue, because billings drive deferred revenue, which is an important indicator of the health and visibility of trends in our business, and represents a significant percentage of future revenue. We regularly monitor calculated billings because we believe the measure offers valuable information regarding the performance of our business and will help investors better understand the sales activity and performance of our business for a particular period. With the expansion of our subscription, cloud-based product offerings (InsightVM, IDR, InsightAppSec, and InsightOps) on the Insight platform, we may realize a shortening of our average contract duration, which should be taken into consideration when evaluating calculated billings. Our use of calculated billings has limitations as an analytical tool and should not be considered in isolation or as a substitute for revenue recognition or revenue measurement, or an analysis of our results as reported under GAAP. Also, it is important to note that other companies, including companies in our industry, may not use calculated billings as a measure of the business, may calculate billings differently, may have different billing frequencies, or may use other financial measures to evaluate their performance, all of which could reduce the usefulness of calculated billings as a comparative measure.

While a reconciliation of non-GAAP guidance measures to corresponding GAAP measures is not available on a forward-looking basis as a result of the uncertainty regarding, and the potential variability of, many of these costs and expenses that we may incur in the future, we have provided a reconciliation of non-GAAP financial measures and other business metrics to the nearest comparable GAAP measures in the accompanying financial statement tables included in this press release.

Cautionary Language Concerning Forward-Looking Statements

This press release includes forward-looking statements. All statements contained in this press release other than statements of historical facts, including, without limitation, statements regarding our future financial and business performance for the third quarter and full-year 2017, expected benefits and market opportunity of the acquisition of Komand and the solutions that Rapid7 will develop with the Komand technology, anticipated future growth of the partner program, attractiveness of our product offerings and platform and the value proposition of our products, are forward-looking statements. The words “anticipate,” “believe,” “continue,” “estimate,” “expect,” “intend,” “may,” “will” and similar expressions are intended to identify forward-looking statements. We have based these forward-looking statements largely on our current expectations and projections about future events and financial trends that we believe may affect our financial condition, results of operations, business strategy, short-term and long-term business operations and objectives and financial needs. These forward-looking statements are subject to a number of risks and uncertainties, including, without limitation, risks related to our rapid growth and ability to sustain our revenue growth rate, the ability of our products and professional services to correctly detect vulnerabilities, competition in the markets in which we operate, market growth, our ability to innovate and manage our growth, our ability to integrate acquired operations, our ability to operate in compliance with applicable laws as well as other risks and uncertainties set forth in the “Risk Factors” section of our Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission for the quarterly period ended March 31, 2017 filed with the Securities and Exchange Commission on May 10, 2017, and subsequent reports that we file with the Securities and Exchange Commission. Moreover, we operate in a very competitive and rapidly changing environment. New risks emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks, uncertainties and assumptions, we cannot guarantee future results, levels of activity, performance, achievements or events and circumstances reflected in the forward-looking statements will occur. We are under no duty to update any of these forward-looking statements after the date of this press release to conform these statements to actual results or revised expectations, except as required by law. You should, therefore, not rely on these forward-looking statements as representing our views as of any date subsequent to the date of this press release.

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Investor contact:

Jeff Bray, CFA

Vice President, Investor Relations

investors@rapid7.com

(857) 990-4074

Press contact:

Rachel E. Adam

Rapid7, Senior PR Manager

press@rapid7.com

(857) 990-4136

rapid7.com

Rapid7, Inc.    

Consolidated Balance Sheets     

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Consolidated Statements of Operations

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Consolidated Statements of Cash Flows

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GAAP to Non-GAAP Reconciliation    

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Reconciliation of Total Revenue to Calculated Billings

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Reconciliation of Net Loss to Adjusted EBITDA

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