Stephanie Buckner - May 11, 2022 Form 4 Insider Report for Altair Engineering Inc. (ALTR)

Role: Chief Operating Officer
Signature: /s/ Raoul Maitra, attorney-in-fact for Stephanie Bucker
Stock symbol: ALTR
Transactions as of: May 11, 2022
Transactions value $: $73,010
Form type: 4
Date filed: 5/12/2022, 12:53 PM
Previous filing: Mar 18, 2022
Next filing: Jul 18, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ALTR	Class A Common Stock	Award	$0	+486	+9.23%	$0.00	5.75K	May 11, 2022	By husband	F1, F2
holding	ALTR	Class A Common Stock						9.66K	May 11, 2022	Direct	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	$73K	+1.46K		$50.11	1.46K	May 11, 2022	Class A Common Stock	1.46K	$50.11	By husband	F4

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

Explanation of Responses:

Id	Content
F1	On May 11, 2022, the Reporting Person's husband was granted 486 Class A Common Stock restricted stock units, which vest in 4 equal annual installments commencing May 11, 2023.
F2	Includes 3,411 Class A Common Stock restricted stock units that are unvested.
F3	Includes 4,475 Class A Common Stock restricted stock units that are unvested.
F4	On May 11, 2022, the Reporting Person's husband was granted 1,457 Class A Common Stock options, the options vest in 4 equal annual installments commencing May 11, 2023.