Exhibit 99.2

Imperva Announces Second Quarter 2018 Financial Results

Redwood Shores, Calif. – July 26, 2018 – Imperva, Inc. (NASDAQ: IMPV), a leading global provider of best-in-class cybersecurity solutions on premises, in the cloud, and across hybrid environments, announced today financial results for the second quarter ended June 30, 2018.

“We made great progress this quarter in executing on our strategy. Our FlexProtect hybrid licensing program saw greater customer adoption, and Imperva remains well positioned to help customers with our hybrid capabilities as they transition from on-premise to the cloud,” stated Chris Hylen, President and Chief Executive Officer of Imperva. “This transition to the cloud and subscription licensing impacted our third quarter reported revenue but drove strong 30% year-over-year growth in deferred revenue. As a result we also delivered solid cash flow generation in the quarter.”

Imperva continues to invest in building world-class hybrid cloud experiences. Today the company announced it has entered into an agreement to acquire Prevoty. Prevoty complements current Imperva security offerings and extends its reach into the fast-growing DevOps market. Once closed, this acquisition will enable Imperva to have a comprehensive and compelling hybrid-cloud solution for the future of web application and data security.

Imperva will host a Financial Analyst and Investor Day on Thursday, November 15, 2018 in New York, New York.

Second Quarter 2018 Financial Highlights

Non-GAAP net loss was $(9.0) million, or $(0.26) per share based on 34.8 million weighted average diluted shares outstanding. Non-GAAP net loss also included the catch-up tax charge related to the previously disclosed Israeli tax provision. This compares to a non-GAAP net income of $8.3 million, or $0.24 per share based on 34.2 million weighted average diluted shares outstanding in the second quarter of 2017.

The company generated $13.8 million in cash flow from operations, compared to $5.4 million in the second quarter of 2017. The company generated $13.2 million in free cash flow (cash flow from operations less capital expenditures) for the quarter, compared to $0.8 million during the second quarter of 2017.

As previously disclosed, the Company has adopted ASC 606 under the modified retrospective method effective January 1, 2018. The accounting impact on revenue, expenses and income has been provided in the tables included in this press release.

A reconciliation of GAAP to non-GAAP financial measures has been provided in the financial statement tables included in this press release. An explanation of these measures is also included below under the heading “Non-GAAP Financial Measures.”

Second Quarter Operating Highlights

Quarterly Conference Call

Imperva will host a conference call today at 2:00 p.m. Pacific Time (5:00 p.m. Eastern Time) to review the company’s financial results for the second quarter ended June 30, 2018. To access the conference call, dial (888) 204-4368 for the U.S. or Canada or (323) 794-2423 with conference ID # 9816357. The webcast will be available live on the Investors section of the company website at www.imperva.com. An audio replay of the call will also be available to investors by phone beginning at approximately 5:00 p.m. Pacific Time on July 26, 2018, until 8:59 p.m. Pacific Time on August 9, 2018, by dialing (844) 512-2921 for the U.S. or Canada or (412) 317-6671 for international callers, and entering passcode # 9816357. In addition, an archived webcast will be available on the Investors section of the company website at www.imperva.com.

Non-GAAP Financial Measures

Imperva reports all financial information required in accordance with U.S. generally accepted accounting principles (GAAP). To supplement the Imperva unaudited condensed consolidated financial statements presented in accordance with GAAP, Imperva uses certain non-GAAP measures of financial performance. The presentation of these non-GAAP financial measures is not intended to be considered in isolation from, as a substitute for, or superior to, the financial information prepared and presented in accordance with GAAP, and may be different from non-GAAP financial measures used by other companies. In addition, these non-GAAP measures have limitations in that they do not reflect all of the amounts associated with the results of Imperva operations as determined in accordance with GAAP.

The non-GAAP financial measures used by Imperva include billings, or revenue plus the change in deferred revenue during the period plus any adjustment to the deferred revenue balance due to adoption of the new revenue recognition standard; free cash flow, or cash provided by operating activities less purchases of property and equipment; and historical and forward-looking non-GAAP operating income (loss), non-GAAP net income (loss), non-GAAP basic and diluted loss per share, and forward-looking non-GAAP gross margin. These non-GAAP financial measures exclude stock-based compensation, acquisition- and disposition-related expenses, amortization of purchased intangibles, restructuring and non-routine consulting expenses related to our restructuring and strategy, gain on sale of business, provision for income taxes on sale of business and the amount of legal settlements from the Imperva unaudited condensed consolidated statement of operations.

For a description of these items, including the reasons why management adjusts for them, and reconciliations of historical non-GAAP financial measures to the most directly comparable GAAP financial measures, please see the section of the accompanying tables titled “Use of Non-GAAP Financial Information” as well as the related tables that precede it. Imperva may consider whether other significant non-routine items that arise in the future should also be excluded in calculating the non-GAAP financial measures it uses.

Imperva believes that these non-GAAP financial measures, when taken together with the corresponding GAAP financial measures, provide meaningful supplemental information regarding the performance of Imperva by excluding certain items that may not be indicative of the company’s core business, operating results or future outlook. Imperva management uses, and believes that investors benefit from referring to, these non-GAAP financial measures in assessing operating results of Imperva, as well as when planning, forecasting and analyzing future periods. These non-GAAP financial measures also facilitate comparisons of the performance of Imperva to prior periods.

Imperva does not provide a reconciliation of forward-looking non-GAAP financial measures to their comparable GAAP financial measures because it could not do so without unreasonable effort due to unavailability of information needed to calculate reconciling items and due to variability, complexity and limited visibility of the adjusting items that would be excluded from the non-GAAP financial measures in future periods. When planning, forecasting and analyzing future periods, Imperva does so primarily on a non-GAAP basis without preparing a GAAP analysis as that would require estimates for items such as stock-based compensation, acquisition- and disposition-related expenses and restructuring costs, which are inherently difficult to predict with reasonable accuracy. Stock-based compensation expense, for example, is difficult to estimate because it depends on the company’s future hiring and retention needs, as well as the future fair market value of the company’s common stock, all of which are difficult to predict and subject to constant change. In addition, for purposes of setting annual guidance, it would be difficult to quantify stock-based compensation expense for the year with reasonable accuracy in the current quarter. As a result, the company does not believe that a GAAP reconciliation would provide meaningful supplemental information about the company’s outlook.

Forward-Looking Statements

This press release contains and the conference call will include forward-looking statements, including without limitation those regarding the company’s belief that it will be well positioned to help customers with its hybrid capabilities as customers transition from on-premise to the cloud; the company’s expectations regarding subscription demand, rate of adoption of its FlexProtect hybrid licensing program and its impact on product

revenue, the transition of customers to the cloud, using the company’s hybrid capabilities to help customers as they transition from on-premise solutions to the cloud, benefits of the Prevoty acquisition and the combined vision to lead the world’s fight to keep data and applications safe from cyber criminals, product strategy initiatives, the company’s security as a service strategy and sales strategy, as well as our business outlook and expectations for the second quarter and full year 2018. These forward-looking statements are subject to material risks and uncertainties that may cause actual results to differ substantially from expectations. Investors should consider important risk factors, which include: demand for the company’s cyber security solutions may not increase or may decrease, including as a result of global macroeconomic conditions and other economic conditions that may reduce enterprise software or security spending generally or customer perceptions about the necessity or reliability of solutions such as ours; the company’s sales expectations for its FlexProtect hybrid licensing program and for sales to large customers may not materialize in a particular quarter or at all; the company may not timely introduce new products or services or versions of its products or services and such products or services may not be accepted by the market or may have defects, errors, outages or failures; the company may not be unable to successfully integrate Prevoty; the company may have difficulty retaining key employees of Prevoty; the risk that our development and integration expenses are greater than we anticipate; customers may not accept, or may not demand, the capabilities of the combined companies to the degree that Imperva anticipates; competitors may be perceived by customers to offer greater value or to be better positioned to help handle cyber security threats and protect their businesses from major risk; existing customers may focus their additional cyber security spending on other technologies or addressing other risks; the company’s growth may be lower than anticipated; the markets that the company addresses may not grow as anticipated; the company may not be able to achieve the anticipated operational efficiencies and other benefits of the restructuring initiative; and other risks detailed under the caption “Risk Factors” in the company’s Form 10-Q filed with the Securities and Exchange Commission, or the SEC, on May 9, 2018 and the company’s other SEC filings. You can obtain copies of the company’s SEC filings on the SEC’s website at www.sec.gov.

The foregoing information represents the company’s outlook only as of the date of this press release, and Imperva undertakes no obligation to update or revise any forward-looking statements, whether as a result of new information, new developments or otherwise.

About Imperva

Imperva^® is a leading cybersecurity company that delivers best-in-class solutions to protect data and applications – wherever they reside – on-premises, in the cloud, and across hybrid environments. The company’s Incapsula, SecureSphere, and CounterBreach product lines help organizations protect websites, applications, APIs, and databases from cyberattacks while ensuring compliance. Imperva innovates using data, analytics, and insights from our experts and our community to deliver simple, effective and enduring solutions that protect our customers from cybercriminals. Learn more at www.imperva.com, our blog, or Twitter.

^© 2018 Imperva, Inc. All rights reserved. Imperva, the Imperva logo, CounterBreach, Incapsula, SecureSphere, ThreatRadar, and Camouflage along with its design are trademarks of Imperva, Inc. and its subsidiaries.

###

IMPERVA, INC. AND SUBSIDIARIES

Consolidated Statements of Operations

(On a GAAP basis)

(In thousands, except per share data)

(Unaudited)

IMPERVA, INC. AND SUBSIDIARIES

Consolidated Balance Sheets

(In thousands)

(Unaudited)

IMPERVA, INC. AND SUBSIDIARIES

Consolidated Statements of Cash Flows

(In thousands)

(Unaudited)

IMPERVA, INC. AND SUBSIDIARIES

Topic 606 Adoption Financial Impact

(In thousands, except per share data)

(Unaudited)

IMPERVA, INC. AND SUBSIDIARIES

Reconciliation of GAAP to Non-GAAP Measures

(In thousands, except per share data)

(Unaudited)

IMPERVA, INC. AND SUBSIDIARIES

Billings

(In thousands)

(Unaudited)

IMPERVA, INC. AND SUBSIDIARIES

Reconciliation of Free Cash Flow

(In thousands)

(Unaudited)

Use of Non-GAAP Financial Information

In addition to the reasons stated under “Non-GAAP Financial Measures” above, which are generally applicable to each of the items Imperva excludes from its non-GAAP financial measures, Imperva believes it is appropriate to exclude or give effect to certain items for the following reasons:

Stock-Based Compensation. When evaluating the performance of its consolidated results, Imperva does not consider stock-based compensation expense. Likewise, the Imperva management team excludes stock-based compensation expense from its operating plans. In contrast, the Imperva management team is held accountable for cash-based compensation and such amounts are included in its operating plans. Further, when considering the impact of equity award grants, Imperva places a greater emphasis on overall stockholder dilution rather than the accounting charges associated with such grants.

Imperva excludes stock-based compensation expense from its non-GAAP financial measures primarily because it does not consider such expense as part of its ongoing operating results when assessing the performance of its business, and the exclusion of the expense facilitates the comparison of current period results with results from prior periods.

Amortization of Purchased Intangibles. When analyzing the operating performance of an acquired entity, Imperva’s management focuses on the total return provided by the investment (i.e., operating profit generated from the acquired entity as compared to the purchase price paid) without taking into consideration any allocations made for accounting purposes. Because the purchase price for an acquisition necessarily reflects the accounting value assigned to intangible assets (including acquired technology and goodwill), when analyzing the operating performance of an acquisition in subsequent periods, Imperva’s management excludes the GAAP impact of acquired intangible assets to its financial results. Imperva believes that such an approach is useful in understanding the long-term return provided by an acquisition and that investors benefit from a supplemental non-GAAP financial measure that excludes the accounting expense associated with acquired intangible assets.

In addition, in accordance with GAAP, Imperva generally recognizes expense for internally-developed intangible assets as they are incurred until technological feasibility is reached, notwithstanding the potential future benefit such assets may provide. Unlike internally-developed intangible assets, however, and also in accordance with GAAP, Imperva generally capitalizes the cost of acquired intangible assets and recognizes that cost as an expense over the useful lives of the assets acquired (other than goodwill, which is not amortized, as required under GAAP). As a result of their GAAP treatment, there is an inherent lack of comparability between the financial performance of internally-developed intangible assets and acquired intangible assets. Accordingly, Imperva believes it is useful to provide, as a supplement to its GAAP operating results, a non-GAAP financial measure that excludes the amortization of acquired intangibles.

Acquisition and Disposition-related Expense, Gain on Sale of Business, and Provision for Income Taxes on Sale of Business. Imperva today announced plans to acquire Prevoty and during the first quarter of 2017 Imperva completed the sale of the Skyfence business. Imperva incurred legal, accounting, advisory and other transaction-related expense in connection with these transactions and excluded the associated acquisition and disposition-related expenses from its non-GAAP financial measures because they are not representative of ongoing operating costs. Imperva also excluded the gain on the sale of the Skyfence business and the related tax effects given that such gain and the associated taxes are not representative of Imperva’s ongoing operations. Imperva does not acquire or dispose of businesses on a predictable cycle and the expenses, gains (if any) and the associated taxes from these transactions vary significantly and are unique to each transaction. Imperva records acquisition- and disposition-related expense as operating expense when incurred and the gain on sale of business and provision for income taxes associated with the sale were recorded at the time the Skyfence transaction closed. As a result, when they occur, these expenses, gains and taxes affect comparability from

period to period and Imperva believes that investors benefit from a supplemental non-GAAP financial measure that excludes these expenses, gains and taxes to facilitate the comparison of current period results with the results from prior periods.

Restructuring Charges. Imperva undertook a restructuring plan in the fourth quarter of 2016 and recorded additional restructuring charges in connection with the plan during the first quarter of 2017, substantially all of which were related to stock-based compensation expense associated with accelerated vesting of equity awards for certain terminated employees. In addition, Imperva undertook a restructuring plan in the first quarter of 2018, and recorded restructuring charges in connection therewith related to cash severance payments, as well as non-routine consulting expenses related to the restructuring and our strategy. In contrast to cost-reduction initiatives that are part of ongoing operations, the restructuring plans resulted in severance and consulting costs that we believe are not representative of ongoing operating costs. Because the restructuring plans were incremental to the operating activities of Imperva’s core business, Imperva has excluded the expense associated with the restructuring from its non-GAAP financial measures to facilitate the comparison of current period results with the results from prior periods.

Legal Settlements. During the second quarter of 2018, Imperva entered into an agreement in principle to settle two class action lawsuits and accrued the amounts of the settlements, which remain subject to court approvals, among other conditions prior to being funded. When planning and evaluating the performance of its consolidated results, Imperva does not consider the amount of legal settlements it was required to recognize in the second quarter of 2018 as representative of ongoing operating costs due to the unusual and one-time nature of the charges. Imperva will recognize charges related to in-period settlement activities for future periods, and does not expect to exclude such charges from its non-GAAP financial measures.

Billings. Imperva believes billings provide management and investors with important information about the health of the business particularly as sales of subscription and support services and related renewals grow.

Free Cash Flow. Imperva considers free cash flow to be a profitability and liquidity measure that provides useful information to management and investors about the amount of cash generated by the business after necessary capital expenditures.

Investor Relations Contact Information

Sunil Shah

650.832.6852

IR@imperva.com

Sunil.Shah@imperva.com