Conference Call Information
What:	Altair’s Fourth Quarter and Full Year 2023 Financial Results Conference Call
When:	Thursday, February 22, 2024
Time:	5 p.m. ET
Webcast:	http://investor.altair.com (live & replay)

Non-GAAP Financial Measures

This press release contains the following non-GAAP financial measures: Non-GAAP Net Income, Non-GAAP Net Income Per Share, Billings, Adjusted EBITDA, Free Cash Flow, Non-GAAP Gross Profit and Non-GAAP Operating Expense.

Altair believes that these non-GAAP measures of financial results provide useful information to management and investors regarding certain financial and business trends relating to its financial condition and results of operations. The Company’s management uses these non-GAAP measures to compare the Company’s performance to that of prior periods for trend analysis, for purposes of determining executive and senior management incentive compensation and for budgeting and planning purposes. The Company also believes that the use of these non-GAAP financial measures provides an additional tool for investors to use in evaluating ongoing operating results and trends and in comparing the Company’s financial measures with other software companies, many of which present similar non-GAAP financial measures to investors.

Non-GAAP net income excludes stock-based compensation, amortization of intangible assets related to acquisitions, restructuring charges, asset impairment charges, non-cash interest expense, other special items as identified by management and described elsewhere in this press release, and the impact of non-GAAP tax rate to income tax expense, which approximates our tax rate excluding discrete items and other specific events that can fluctuate from period to period.

Non-GAAP diluted common shares includes the diluted weighted average shares outstanding per GAAP regardless of whether the Company is in a loss position.

Billings consists of total revenue plus the change in deferred revenue, excluding deferred revenue from acquisitions.

Adjusted EBITDA represents net income adjusted for income tax expense, interest expense, interest income and other, depreciation and amortization, stock-based compensation expense, restructuring charges, asset impairment charges and other special items as identified by management and described elsewhere in this press release.

Free cash flow consists of cash flow from operations less capital expenditures.

Non-GAAP gross profit represents gross profit adjusted for stock-based compensation expense, restructuring expense and other special items as identified by management and described elsewhere in this press release.

Non-GAAP operating expense represents operating expense excluding stock-based compensation expense, amortization, restructuring charges, asset impairment charges and other special items as identified by management and described elsewhere in this press release.

Company management does not consider these non-GAAP measures in isolation or as an alternative to financial measures determined in accordance with GAAP. The principal limitation of these non-GAAP financial measures is that they exclude significant expenses and income that are required by GAAP to be recorded in the Company’s financial statements. In addition, they are subject to inherent limitations as they reflect the exercise of judgment by management about which expenses and income are excluded or included in determining these non-GAAP financial measures. Altair urges investors to review the reconciliation of its non-GAAP financial measures to the comparable GAAP financial measures, which it includes in press releases announcing quarterly financial results, including this press release, and not to rely on any single financial measure to evaluate the Company’s business.

Reconciliation tables of the most comparable GAAP financial measures to the non-GAAP financial measures used in this press release are included with the financial tables at the end of this release.

About Altair

Altair is a global leader in computational intelligence that provides software and cloud solutions in simulation, high-performance computing (HPC), data analytics and AI. Altair enables organizations across all industries to compete more effectively and drive smarter decisions in an increasingly connected world – all while creating a greener, more sustainable future. For more information, visit https://www.altair.com/.

Cautionary Language Concerning Forward-Looking Statements

This press release contains “forward-looking statements” within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995, including but not limited to, our guidance for the first quarter and full year 2024, our statements regarding our expectations for 2024, and our reconciliations of projected non-GAAP financial measures. These forward-looking statements are made as of the date of this release and are based on current expectations, estimates, forecasts and projections as well as the beliefs and assumptions of management. Words such as “expect,” “anticipate,” “should,” “believe,” “hope,” “target,” “project,” “goals,” “estimate,” “potential,” “predict,” “may,” “will,” “might,” “could,” “intend,” variations of these terms or the negative of these terms and similar expressions are intended to identify these forward-looking statements. Forward-looking statements are subject to a number of risks and uncertainties, many of which involve factors or circumstances that are beyond Altair’s control. Altair’s actual results could differ materially from those stated or implied in our forward-looking statements due to a number of factors, including but not limited to, the risks detailed in Altair’s quarterly and annual reports filed with the Securities and Exchange Commission as well as other documents that may be filed by the Company from time to time with the Securities and Exchange Commission. Past performance is not necessarily indicative of future results. The forward-looking statements included in this press release represent Altair’s views as of the date of this press release. The Company anticipates that subsequent events and developments will cause its views to change. Altair undertakes no intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. These forward-looking statements should not be relied upon as representing Altair’s views as of any date subsequent to the date of this press release.

Media Relations
Altair
Dave Simon
248-614-2400 ext. 332
dls@altair.com

Investor Relations
The Blueshirt Group
Monica Gould
212-871-3927
ir@altair.com

ALTAIR ENGINEERING INC. AND SUBSIDIARIES CONSOLIDATED BALANCE SHEETS (Unaudited)
	December 31,
(in thousands)	2023				2022
ASSETS
CURRENT ASSETS
Cash and cash equivalents	$	467,459			$	316,146
Accounts receivable, net		190,461				170,279
Income tax receivable		16,650				11,259
Prepaid expenses and other current assets		26,053				29,142
Total current assets		700,623				526,826
Property and equipment, net		39,803				37,517
Operating lease right of use assets		30,759				33,601
Goodwill		458,125				449,048
Other intangible assets, net		83,550				107,609
Deferred tax assets		9,955				9,727
Other long-term assets		40,678				40,410
TOTAL ASSETS	$	1,363,493			$	1,204,738
LIABILITIES AND STOCKHOLDERS’ EQUITY
CURRENT LIABILITIES
Accounts payable	$	8,995			$	10,434
Accrued compensation and benefits		45,081				42,456
Current portion of operating lease liabilities		8,825				10,396
Other accrued expenses and current liabilities		48,398				56,371
Deferred revenue		131,356				113,081
Current portion of convertible senior notes, net		81,455				—
Total current liabilities		324,110				232,738
Convertible senior notes, net		225,929				305,604
Operating lease liabilities, net of current portion		22,625				24,065
Deferred revenue, non-current		32,347				31,379
Other long-term liabilities		47,151				41,216
TOTAL LIABILITIES		652,162				635,002
Commitments and contingencies
STOCKHOLDERS’ EQUITY
Preferred stock ($0.0001 par value), authorized 45,000 shares, none issued or outstanding		—				—
Common stock ($0.0001 par value)
Class A common stock, authorized 513,797 shares, issued and outstanding 55,240 and 52,277 shares as of December 31, 2023 and 2022, respectively		5				5
Class B common stock, authorized 41,203 shares, issued and outstanding 26,814 and 27,745 shares as of December 31, 2023 and 2022, respectively		3				3
Additional paid-in capital		864,135				721,307
Accumulated deficit		(130,503	)			(121,577	)
Accumulated other comprehensive loss		(22,309	)			(30,002	)
TOTAL STOCKHOLDERS’ EQUITY		711,331				569,736
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	1,363,493			$	1,204,738