CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS
This communication contains “forward-looking statements” within the Private Securities Litigation Reform Act of 1995. Any statements contained in
this communication that are not statements of historical fact, including statements regarding the proposed transaction, including the expected timing and closing of the proposed transaction; Altair’s ability to consummate the proposed
transaction; the expected benefits of the proposed transaction and other considerations taken into account by the Altair Board of Directors in approving the proposed transaction; the amounts to be received by stockholders and expectations for Altair
prior to and following the closing of the proposed transaction, may be deemed to be forward-looking statements. All such forward-looking statements are intended to provide management’s current expectations for the future of Altair based on
current expectations and assumptions relating to Altair’s business, the economy and other future conditions. Forward-looking statements generally can be identified through the use of words such as “believes,” “anticipates,”
“may,” “should,” “will,” “plans,” “projects,” “expects,” “expectations,” “estimates,” “forecasts,” “predicts,” “targets,”
“prospects,” “strategy,” “signs,” and other words of similar meaning in connection with the discussion of future performance, plans, actions or events. Because forward-looking statements relate to the future, they are
subject to inherent risks, uncertainties and changes in circumstances that are difficult to predict. Such risks and uncertainties include, among others: (i) the timing to consummate the proposed transaction, (ii) the risk that a condition
of closing of the proposed transaction may not be satisfied or that the closing of the proposed transaction might otherwise not occur, (iii) the risk that a regulatory approval that may be required for the proposed transaction is not obtained
or is obtained subject to conditions that are not anticipated, (iv) the diversion of management time on transaction-related issues, (v) risks related to disruption of management time from ongoing business operations due to the proposed
transaction, (vi) the risk that any announcements relating to the proposed transaction could have adverse effects on the market price of the common stock of Altair, (vii) the risk that the proposed transaction and its announcement could
have an adverse effect on the ability of Altair to retain customers and retain and hire key personnel and maintain relationships with its suppliers and customers, (viii) the occurrence of any event, change or other circumstance or condition
that could give rise to the termination of the Merger Agreement, dated October 30, 2024 (the “Merger Agreement”) with Siemens Industry Software Inc. (“Siemens”), including in circumstances requiring Altair to pay a termination
fee, (ix) the risk that competing offers will be made; (x) unexpected costs, charges or expenses resulting from the merger, (xi) potential litigation relating to the merger that could be instituted against the parties to the Merger
Agreement or their respective directors, managers or officers, including the effects of any outcomes related thereto, (xii) worldwide economic or political changes that affect the markets that Altair’s businesses serve which could have an
effect on demand for Altair’s products and impact Altair’s profitability and (xiii) disruptions in the global credit and financial markets, including diminished liquidity and credit availability, changes in international trade
agreements, including tariffs and trade restrictions, cyber-security vulnerabilities, foreign currency volatility, swings in consumer confidence and spending, raw material pricing and supply issues, retention of key employees, increases in fuel
prices, and outcomes of legal proceedings, claims and investigations. Accordingly, actual results may differ materially from those contemplated by these forward-looking statements. Investors, therefore, are cautioned against relying on any of these
forward-looking statements. They are neither statements of historical fact nor guarantees or assurances of future performance. Additional information regarding the factors that may cause actual results to differ materially from these forward-looking
statements is available in Altair’s filings with the SEC, including the risks and uncertainties identified in Part I, Item 1A - Risk Factors of Altair’s Annual Report on Form 10-K for the year ended
December 31, 2023 and in Altair’s other filings with the SEC. The list of factors is not intended to be exhaustive.
These forward-looking
statements speak only as of the date of this communication, and Altair does not assume any obligation to update or revise any forward-looking statement made in this communication or that may from time to time be made by or on behalf of Altair.