George J. Christ - Feb 23, 2024 Form 4 Insider Report for Altair Engineering Inc. (ALTR)

Role: 10%+ Owner
Signature: /s/ Raoul Maitra, attorney-in-fact for George J. Christ
Stock symbol: ALTR
Transactions as of: Feb 23, 2024
Transactions value $: $0
Form type: 4
Date filed: 3/25/2024, 02:57 PM
Previous filing: Jan 25, 2024
Next filing: Mar 26, 2024

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ALTR	Class A Common Stock	Conversion of derivative security	$0	+300K		$0.00	300K	Feb 23, 2024	By Christ Revocable Trust dated May 8, 2015	F1
transaction	ALTR	Class A Common Stock	Conversion of derivative security	$0	+300K		$0.00	300K	Feb 23, 2024	By GC Investments LLC	F2
holding	ALTR	Class A Common Stock						187K	Feb 23, 2024	By The Dana Christ Irrevocable Trust Dated May 8, 2015	F3
holding	ALTR	Class A Common Stock						187K	Feb 23, 2024	By The Lauren Christ Irrevocable Trust Dated May 8, 2015	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	Class B Common Stock	Conversion of derivative security	$0	-300K	-5.9%	$0.00	4.78M	Feb 23, 2024	Class A Common Stock	300K	$0.00	By Christ Revocable Trust dated May 8, 2015	F1, F4
transaction	ALTR	Class B Common Stock	Conversion of derivative security	$0	-300K	-6.46%	$0.00	4.34M	Feb 23, 2024	Class A Common Stock	300K	$0.00	By GC Investments LLC	F2, F4

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

Explanation of Responses:

Id	Content
F1	Reporting person serves as Trustee. Reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.
F2	Reporting person serves as Manager. Reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.
F3	Reporting person serves as co-Trustee. Reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.
F4	Each share of Class B common stock is immediately convertible, at the option of the shareholder, into one share of Class A common stock and shall automatically convert into Class A common stock upon the occurrence of certain events. Please see Altair Engineering Inc. Registration Statement filed with the Securities and Exchange Commission on Form S-1 (File No. 333-225412) for a description of the conversion rights.