Altair Engineering Inc.
SEC Filing List

ALTR CIK: 0001701732

Form Type:

Year

Form	Description	Owner/Filer	Filing Agent	Date	Actions
SCHEDULE 13G/A			SCHULTE ROTH & ZABEL LLP /fa	04/07/2025	View ... Create Alert Filing info Download PDF Copy Link
15-12G	Notice of termination of registration of...	Altair Engineering Inc.	DONNELLEY FINANCIAL SOLUTIONS /FA/	04/07/2025	View ... Create Alert Filing info Download PDF Copy Link
8-K	Current report filing	Altair Engineering Inc.	DONNELLEY FINANCIAL SOLUTIONS /FA/	03/28/2025	View ... Create Alert Filing info Download PDF Copy Link View XBRL Download CSV
S-8 POS	Post-effective amendment to a S-8 regist...	Altair Engineering Inc.	DONNELLEY FINANCIAL SOLUTIONS /FA/	03/26/2025	View ... Create Alert Filing info Download PDF Copy Link
S-8 POS	Post-effective amendment to a S-8 regist...	Altair Engineering Inc.	DONNELLEY FINANCIAL SOLUTIONS /FA/	03/26/2025	View ... Create Alert Filing info Download PDF Copy Link
25-NSE	Notification filed by national security ...		Nasdaq Stock Market LLC /fa	03/26/2025	View ... Create Alert Filing info Download PDF Copy Link
S-8 POS	Post-effective amendment to a S-8 regist...	Altair Engineering Inc.	DONNELLEY FINANCIAL SOLUTIONS /FA/	03/26/2025	View ... Create Alert Filing info Download PDF Copy Link
S-8 POS	Post-effective amendment to a S-8 regist...	Altair Engineering Inc.	DONNELLEY FINANCIAL SOLUTIONS /FA/	03/26/2025	View ... Create Alert Filing info Download PDF Copy Link
S-8 POS	Post-effective amendment to a S-8 regist...	Altair Engineering Inc.	DONNELLEY FINANCIAL SOLUTIONS /FA/	03/26/2025	View ... Create Alert Filing info Download PDF Copy Link
POSASR	Post-effective Amendment to an automatic...	Altair Engineering Inc.	DONNELLEY FINANCIAL SOLUTIONS /FA/	03/26/2025	View ... Create Alert Filing info Download PDF Copy Link
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