George J. Christ - Jun 8, 2021 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: Jun 8, 2021
Transactions value $: -$2,346,944
Form type: 4
Date filed: 6/9/2021, 09:30 AM
Previous filing: Jun 8, 2021
Next filing: Jul 8, 2021

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	+35.6K		$0.00	35.6K	Jun 8, 2021	By Christ Revocable Trust dated May 8, 2015	F1
transaction	ALTR	Class A Common Stock	Sale	-$2.35M	-35.6K	-100%	$65.98	0	Jun 8, 2021	By Christ Revocable Trust dated May 8, 2015	F1, F2

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	-35.6K	-0.54%	$0.00	6.56M	Jun 8, 2021	Class A Common Stock	35.6K	$0.00	By Christ Revocable Trust dated May 8, 2015	F1, F3
holding	ALTR	Class B Common Stock						4.94M	Jun 8, 2021	Class A Common Stock	4.94M	$0.00	By GC Investments LLC	F3, 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	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.76 to $66.345 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.
F3	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.
F4	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.