Ownership

James R. Scapa - Chief Executive Officer, Director, 10%+ Owner at Altair Engineering Inc.

Insider Transactions and Holdings

Entity Type: Individual
Role: Chief Executive Officer, Director, 10%+ Owner
Stock Symbol: ALTR on Nasdaq
Industry: Services-Prepackaged Software
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James R. Scapa - trading volume in the past year for Altair Engineering Inc.

	Shares	%	Avg Price	Total $
Buys
Sells	-129K	100%	$89.82	-$11.6M
Net	-129K	-100%		-$11.6M

Holdings reported by James R. Scapa for Altair Engineering Inc.

Class	Num Shares	Value	Price $	Transaction Date	Ownership	Underlying Class	Underlying Amount
Class B Common Stock	10.2M	$1.06B	$103.84	Oct 28, 2024	By James R. Scapa Declaration of Trust dated March 5, 1987	Class A Common Stock
Class B Common Stock	6.63M	$689M	$103.84	Oct 28, 2024	By JRS Investments LLC	Class A Common Stock
Class A Common Stock	134K	$13.9M	$103.84	Oct 28, 2024	Direct
Class A Common Stock	1.19K	$124K	$103.84	Oct 28, 2024	By wife
Class A Common Stock	0	$0	$103.84	Oct 28, 2024	By James R. Scapa Declaration of Trust dated March 5, 1987
Class A Common Stock	0	$0	$103.84	Oct 28, 2024	By JRS Investments LLC
Stock Option (Right to Buy)	123K			Mar 15, 2024	Direct	Class A Common Stock

Transactions reported by James R. Scapa for Altair Engineering Inc.

Sym	Class	Transaction	%	Value $	* Price $	Shares	Shares After	Date	Ownership

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