Altair Engineering INC Form 4 insider transactions

GC Investments LLC, a 10% owner of Altair Engineering Inc., sold a significant number of Class A Common Stock shares over three days in October 2024.

Director George J. Christ reports selling shares of Altair Engineering Inc. on October 9, 2024, through multiple transactions.

The Christ Revocable Trust sold a significant number of Altair Engineering Inc. Class A Common Stock shares in multiple transactions on October 9, 2024.

Director Teresa Harris of Altair Engineering Inc. reports exercising stock options and selling shares under a pre-arranged 10b5-1 plan.

James Scapa, CEO of Altair Engineering, reports the sale of Class A Common Stock and conversion of Class B Common Stock, while maintaining significant beneficial ownership.

JRS Investments LLC, a 10% owner of Altair Engineering Inc., reports the acquisition and disposal of Class A Common Stock on September 30, 2024, according to a pre-arranged Rule 10b5-1 trading plan.

James R. Scapa Declaration of Trust reports transactions involving Altair Engineering Inc. Class A and Class B Common Stock, including acquisitions and disposals under a pre-arranged 10b5-1 trading plan.

The Christ Revocable Trust, a 10% owner of Altair Engineering Inc., sold 50,048 shares of Class A Common Stock on September 27, 2024, at a weighted average price of $95.0732 per share.

George J. Christ, a director at Altair Engineering Inc., sold 50,048 shares of Class A Common Stock at a weighted average price of $95.0732 on September 27, 2024.

Director Teresa Harris of Altair Engineering Inc. reports the acquisition and disposition of Class A Common Stock, including transactions made under a Rule 10b5-1 trading plan.

James Scapa, CEO of Altair Engineering, reports the acquisition and disposition of Class A and Class B Common Stock through a 10b5-1 plan and other entities.

JRS Investments LLC, a 10% owner of Altair Engineering Inc., reports the sale of Class A Common Stock and conversion of Class B Common Stock into Class A Common Stock on August 28, 2024.

James R. Scapa, a director at Altair Engineering Inc., engaged in multiple transactions involving Class A Common Stock, including acquisitions and disposals, as reported in a Form 4 filing with the SEC.

Director Teresa Harris of Altair Engineering Inc. reports exercising stock options and selling shares of Class A Common Stock under a pre-arranged 10b5-1 plan.

James Scapa, CEO of Altair Engineering, reports transactions involving Class A and Class B Common Stock, including acquisitions, disposals, and conversions, as per a pre-arranged Rule 10b5-1 trading plan.

JRS Investments LLC, a 10% owner of Altair Engineering Inc., reports the sale of Class A Common Stock and acquisition of Class B Common Stock on July 29, 2024, pursuant to a pre-arranged 10b5-1 trading plan.

James R. Scapa, a director at Altair Engineering Inc., sold 6,500 shares of Class A Common Stock on July 29, 2024, as part of a pre-arranged 10b5-1 trading plan.

Stephanie Buckner, COO of Altair Engineering Inc., reports the acquisition of 83 shares of Class A Common Stock through the company's Employee Stock Purchase Plan.

Matthew Brown, CFO of Altair Engineering Inc., reported the purchase of 83 shares of Class A Common Stock at $71.68 per share through the company's Employee Stock Purchase Plan.

Brian Gayle, Chief Accounting Officer of Altair Engineering Inc., reports the acquisition of 83 shares of Class A Common Stock at $71.68 per share through the company's Employee Stock Purchase Plan.

Ravi Kunju, Chief Product Strategy Officer at Altair Engineering, reports purchasing shares through the employee stock purchase plan and discloses total holdings including unvested restricted stock units.

Raoul Maitra, Chief Legal Officer of Altair Engineering Inc., reports the purchase of 83 shares of Class A Common Stock through the company's Employee Stock Purchase Plan.

Jeffrey Marraccini, Chief Information Security Officer at Altair Engineering, acquired 83 shares of Class A Common Stock through the company's Employee Stock Purchase Plan.

Chief Marketing Officer Amy Messano reports purchasing 83 shares of Altair Engineering Inc. Class A Common Stock at $71.68 per share through the employee stock purchase plan.

Gilma Saravia, Chief People Officer of Altair Engineering Inc., reports the acquisition of 83 shares of Class A Common Stock through the company's Employee Stock Purchase Plan.

Chief Technology Officer of Altair Engineering Inc., Srikanth Mahalingam, reports acquisition of shares through an employee stock purchase plan.

Director Teresa Harris of Altair Engineering Inc. reports exercising stock options and selling shares under a pre-arranged 10b5-1 plan.

Altair Engineering's CEO, James Ralph Scapa, sold shares of Class A Common Stock on June 28, 2024, under a pre-arranged 10b5-1 trading plan.

JRS Investments LLC, a 10% owner of Altair Engineering Inc., sold shares of Class A Common Stock on June 28, 2024, under a pre-arranged Rule 10b5-1 trading plan.

James R. Scapa, a director at Altair Engineering Inc., sold shares of Class A Common Stock on June 28, 2024, under a pre-arranged 10b5-1 trading plan.