Jeffrey Marraccini - Jul 14, 2022 Form 4/A - Amendment Insider Report for Altair Engineering Inc. (ALTR)

Role: Chief Information Security Officer
Signature: /s/ Raoul Maitra, attorney-in-fact for Jeffrey Marraccini
Stock symbol: ALTR
Transactions as of: Jul 14, 2022
Transactions value $: $6,044
Form type: 4/A - Amendment
Date filed: 7/18/2022, 06:46 PM
Date Of Original Report: Jul 18, 2022
Previous filing: Jul 18, 2022
Next filing: Dec 16, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ALTR	Class A Common Stock	Award	$6.04K	+145	+6.43%	$41.68	2.4K	Jul 14, 2022	Direct	F1, F2, F3

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

Explanation of Responses:

Id	Content
F1	Shares purchased under the Altair Engineering Inc. 2021 Employee Stock Purchase Plan in a transaction exempt under Rule 16b-3(c).
F2	Includes 1,502 Class A Common Stock restricted stock units that are unvested.
F3	This amendment is being filed to correct the number of securities beneficially owned following the reported transaction. The number of securities beneficially owned was misstated on the Reporting Person's original Form 4 filed with the Securities and Exchange Commission on July 18, 2022.

Remarks:

Chief Information Security Officer