Altair Engineering | 4: Statement of changes in beneficial ownership of securities-10% Owner Christ George J
Altair Engineering | 4: Statement of changes in beneficial ownership of securities-10% Owner Christ Revocable Trust
Altair Engineering | ARS: Annual Report to Security Holders
Altair Engineering | DEFA14A: Others
Altair Engineering | DEF 14A: Definitive information statements
Altair Engineering | 4: Statement of changes in beneficial ownership of securities-Director Harris Teresa A
Altair Engineering | 144: Notice of proposed sale of securities pursuant to Rule 144
Altair Engineering | 4: Statement of changes in beneficial ownership of securities-10% Owner Christ George J
Altair Engineering | 4: Statement of changes in beneficial ownership of securities-10% Owner Christ Revocable Trust
Altair Engineering | 4: Statement of changes in beneficial ownership of securities-10% Owner Christ George J
Altair Engineering | 4: Statement of changes in beneficial ownership of securities-10% Owner Christ Revocable Trust
Altair Engineering | 4: Statement of changes in beneficial ownership of securities-10% Owner Christ George J
Altair Engineering | 4: Statement of changes in beneficial ownership of securities-10% Owner Christ Revocable Trust
Altair Engineering | 4: Statement of changes in beneficial ownership of securities-10% Owner Christ George J
Altair Engineering | 4: Statement of changes in beneficial ownership of securities-10% Owner GC Investments LLC
Altair Engineering | 4: Statement of changes in beneficial ownership of securities-10% Owner Christ Revocable Trust
Altair Engineering | 4: Statement of changes in beneficial ownership of securities-Officer Scapa James Ralph
Altair Engineering | 4: Statement of changes in beneficial ownership of securities-10% Owner JRS Investments LLC
Altair Engineering | 4: Statement of changes in beneficial ownership of securities-10% Owner James R. Scapa Declaration of Trust
Altair Engineering | 4: Statement of changes in beneficial ownership of securities-Officer Saravia Gilma
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