George J. Christ - Dec 1, 2023 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: Dec 1, 2023
Transactions value $: -$3,331,165
Form type: 4
Date filed: 12/5/2023, 03:04 PM
Previous filing: Dec 1, 2023
Next filing: Dec 8, 2023

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	+45.8K		$0.00	45.8K	Dec 1, 2023	By GC Investments LLC	F2
transaction	ALTR	Class A Common Stock	Sale	-$3.33M	-45.8K	-100%	$72.79	0	Dec 1, 2023	By GC Investments LLC	F2, F3
holding	ALTR	Class A Common Stock						187K	Dec 1, 2023	By The Dana Christ Irrevocable Trust Dated May 8, 2015	F1
holding	ALTR	Class A Common Stock						187K	Dec 1, 2023	By The Lauren Christ Irrevocable Trust Dated May 8, 2015	F1

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	-45.8K	-0.97%	$0.00	4.66M	Dec 1, 2023	Class A Common Stock	45.8K	$0.00	By GC Investments LLC	F2, F4
holding	ALTR	Class B Common Stock						5.18M	Dec 1, 2023	Class A Common Stock	5.18M	$0.00	By Christ Revocable Trust dated May 8, 2015	F4, F5

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

Explanation of Responses:

Id	Content
F1	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.
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	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $72.65 to $73.41 per share, inclusive. The reporting person undertakes to provide to Altair Engineering Inc., any security holder of Altair Engineering Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein.
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.
F5	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.