James R. Scapa - Mar 2, 2023 Form 4 Insider Report for Altair Engineering Inc. (ALTR)

Role: Chief Executive Officer, Director, 10%+ Owner
Signature: /s/ Raoul Maitra, attorney-in-fact for James R. Scapa
Stock symbol: ALTR
Transactions as of: Mar 2, 2023
Transactions value $: $0
Form type: 4
Date filed: 3/8/2023, 04:19 PM
Previous filing: Feb 16, 2023
Next filing: Mar 15, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ALTR	Class A Common Stock	Award	$0	+38K	+45.26%	$0.00	122K	Mar 2, 2023	Direct	F1, F2
holding	ALTR	Class A Common Stock						1.5K	Mar 2, 2023	By wife	F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ALTR	Stock Option (Right to Buy)	Award	$0	+114K		$0.00	114K	Mar 2, 2023	Class A Common Stock	114K	$65.19	Direct	F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On March 2, 2023, the Reporting Person was granted 38,000 Class A Common Stock restricted stock units, which vest in 4 equal annual installments commencing March 2, 2024.
F2	Includes 93,390 Class A Common Stock restricted stock units that are unvested.
F3	Includes 752 Class A Common Stock restricted stock units that are unvested.
F4	On March 2, 2023, the Reporting Person was granted 114,000 Class A Common Stock options, the options vest in 4 equal annual installments commencing March 2, 2024.