Exhibit 99.1

Exa Reports Second Quarter Fiscal 2014 Financial Results

Revenue increases 7%, or 10% on a constant currency basis, from a year ago

Burlington, Mass., September 4, 2013 – Exa^® Corporation (NASDAQ: EXA), a global innovator of fluids simulation solutions for product engineering, today announced financial results for the second quarter of fiscal 2014, which ended July 31, 2013.

“The return to customer spending that we started to see at the beginning of the year continued in the second quarter,” said Stephen Remondi, President and Chief Executive Officer of Exa. “This was most apparent in second quarter project revenue, which increased 23% from a year ago. We continue to see strong momentum from customers in the passenger car market, though this is being more than offset by continued delays at customers in the truck and off-highway markets who are impacted by softer macro trends. We believe the investments that we are making in our long-term growth are having a positive impact on our business, but with a mixed customer environment we are tempering our growth expectations over the near-term. As such we are moderating our full year revenue expectations, though we continue to anticipate double-digit revenue growth for the full year fiscal 2014, as compared to fiscal 2013.”

“Over the longer-term,” Remondi added, “We expect our recent release of PowerFLOW 5.0 to open new opportunities enabling complex simulations for the aerospace industry and offer significant accuracy improvements for thermal analysis and new acoustic simulation capabilities. We believe investments we have made in both operations and product development better position us to further penetrate the market as customers continue replacing costly and time-consuming physical prototyping with our differentiated simulation technology in the years ahead.”

Second Quarter Fiscal 2014 Financial Highlights

Revenue

Profitability

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Balance Sheet

Business Outlook

Based on information available as of September 4, 2013, Exa is issuing guidance for the third quarter and full year fiscal 2014 as indicated below.

Third Quarter Fiscal 2014:

Full Year Fiscal 2014:

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The above guidance assumes an exchange rate of 1.32 US dollars per Euro and 100.0 Japanese yen per US dollar for the balance of fiscal year 2014.

An explanation and reconciliation of historical and forward-looking non-GAAP measures presented above, including revenue on a constant currency basis, adjusted EBITDA, non-GAAP income (loss) from operations and non-GAAP net income (loss), to the comparable GAAP measures is provided below and in the attachments to this press release.

Conference Call Information

Non-GAAP Financial Measures

To supplement our condensed consolidated financial statements, which are presented on a GAAP basis, we disclose revenue on a constant currency basis, non-GAAP income from operations, non-GAAP net income, non-GAAP net income per diluted share and Adjusted EBITDA. These non-GAAP measures are not in accordance with, or an alternative for, amounts determined in accordance with generally accepted accounting principles in the United States. The GAAP measure most comparable to revenue on a constant currency basis is GAAP revenue. The GAAP measure most comparable to non-GAAP income from operations is GAAP income from operations. The GAAP measure most comparable to Non-GAAP net income and Adjusted EBITDA is GAAP net income. The GAAP measure most comparable to Non-GAAP net income per diluted share is GAAP net income per diluted share. A reconciliation of these non-GAAP financial measures to the corresponding GAAP measure is included below.

We define revenue on a constant currency basis as GAAP revenue, adjusted to reverse the impact of changes in the average exchange rates of currencies in which our international operations generated revenue and incurred expenses.

We define Non-GAAP net income as net income, excluding the after tax impact of non-cash, stock-based compensation expense and the amortization of acquired intangibles. We define EBITDA as net income, excluding depreciation and amortization, interest expense, loss on extinguishment of debt, other income (expense), foreign exchange gain (loss) and provision for income taxes, and we define Adjusted EBITDA as EBITDA, excluding non-cash, stock-based compensation expense.

Our management uses these non-GAAP measures when evaluating our operating performance and for internal planning and forecasting purposes. We believe that these measures help indicate underlying

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trends in our business, are important in comparing current results with prior period results, and are useful to investors and financial analysts in assessing our operating performance. For example, our international operations generate revenue and incur expenses that are denominated in foreign currencies. These amounts could be materially affected by currency fluctuations. Our principal exposures are to fluctuations in exchange rates for the United States dollar versus the Euro, British pound, Japanese yen, Chinese yuan and Korean won. Changes in currency exchange rates that are beyond our control can significantly affect our consolidated results of operations. We believe that disclosure of our revenue on a constant currency basis is useful as an indicator of demand for our solutions independent of the influence of currency exchange fluctuations. Management considers Adjusted EBITDA to be an important indicator of our operational strength and the performance of our business and a good measure of our historical operating trends. The non-GAAP financial information presented here should be considered in conjunction with, and not as a substitute for, or superior to, the financial information presented in accordance with GAAP and, in particular, should not be considered a measure of our liquidity. There are significant limitations associated with the use of non-GAAP financial measures. Further, these measures may differ from the non-GAAP information, even where similarly titled, used by other companies and therefore should not be used to compare our performance to that of other companies. Investors should carefully consider the attached reconciliation of these non-GAAP financial measures to the comparable GAAP financial measures.

About Exa Corporation

Exa Corporation develops, sells and supports simulation software and services to enhance product performance, reduce product development costs and improve the efficiency of design and engineering processes. Exa’s simulation solutions enable their customers to gain crucial insight into design performance early in the design cycle, thus reducing the likelihood of expensive redesigns and late-stage engineering changes. As a result, Exa’s customers realize significant cost savings and fundamental improvements in their engineering development process. Our products include, PowerFLOW^®, PowerDELTA^®, PowerCLAY^®, PowerVIZ^®, PowerSPECTRUM^®, PowerACOUSTICS^®, PowerINSIGHT^®, PowerCASE™, PowerCOOL^® and PowerTHERM^® along with professional engineering consulting services. A partial customer list includes: AGCO, BMW, Ford, Hyundai, Kenworth, MAN, Nissan, Peterbilt, Renault, Scania, Toyota, Volkswagen, and Volvo Trucks.

Safe Harbor Statement

This press release, including the section entitled “Business Outlook,” contains forward-looking statements describing our expectations concerning future events and our future financial performance. These statements are only predictions and may be inaccurate. Actual events or results may differ materially. In evaluating these statements, you should specifically consider various factors, including the risks outlined under “Risk Factors” in our Annual Report on Form 10-K for the year ended January 31, 2013, and Form 10-Q for the quarter-ended April 30, 2013, and in our other SEC filings. These factors may cause our actual results to differ materially from those described in our forward-looking statements. Although we believe that the expectations reflected in the forward-looking statements are reasonable, our future results, levels of activity, performance or achievements may differ from our

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expectations. Other than as required by law, we do not undertake a responsibility to update any of the forward-looking statements after the date of this press release, even though our situation may change in the future.

Media Contact:

Michelle Murray-Ross, Exa Corporation

+1 (781) 564-0251

michelle@exa.com

Investor Relations Contact:

Garo Toomajanian, ICR

+1 (781) 564-0337

investor@exa.com

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EXA CORPORATION

Consolidated Balance Sheets

(Unaudited)

(in thousands, except share and per share data)

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EXA CORPORATION

Consolidated Statements of Operations and Statements of Comprehensive (Loss) Income

(Unaudited)

(in thousands, except share and per share data)

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EXA CORPORATION

Consolidated Statements of Cash Flows

(Unaudited)

(in thousands)

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EXA CORPORATION

Reconciliation of historical Non-GAAP to GAAP measures

(Unaudited)

(in thousands, except per share data)

Adjusted EBITDA:

Non-GAAP operating income:

Non-GAAP net (loss) income:

Non-GAAP net (loss) income, per diluted share:

9

EXA CORPORATION

Reconciliation of forward looking Non-GAAP to GAAP measures

EBITDA and Adjusted EBITDA:

Non-GAAP net (loss) income:

10