X0206 3 2017-10-31 0 0001701732 Altair Engineering Inc. ALTR 0001720644 Fariello Massimo Giuseppe C/O ALTAIR ENGINEERING INC. 1820 E. BIG BEAVER ROAD TROY MI 48083 0 1 0 0 Chief Strategy Officer Class A Common Stock 332000 I By Advanced Studies Holding Future Srl Stock Option (right to buy) 0.64 2020-07-01 Class A Common Stock 60000 D Stock Option (right to buy) 2.48 2022-12-21 Class A Common Stock 800 D Stock Option (right to buy) 3.79 2024-12-15 Class A Common Stock 3168 D Stock Option (right to buy) 3.84 2025-12-17 Class A Common Stock 3252 D Stock Option (right to buy) 3.64 2026-05-17 Class A Common Stock 3804 D Stock Option (right to buy) 5.18 2027-06-09 Class A Common Stock 19280 D Reporting person serves as Chief Executive Officer. 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. The options vested in 4 equal annual installments commencing July 1, 2011. This option is currently fully vested. The options vested in 4 equal annual installments commencing December 21, 2013. This option is currently fully vested. The options vest in 4 equal annual installments commencing December 15, 2015. The options vest in 4 equal annual installments commencing December 17, 2016. The options vest in 4 equal annual installments commencing May 17, 2017. The options vest in 4 equal annual installments commencing June 9, 2018. Exhibit List Exhibit 24 - Power of Attorney /s/ Massimo Giuseppe Fariello 2017-10-31