X0306 4 2022-09-01 0001897982 Aspen Technology, Inc. AZPN 0001332920 Hammond F G C/O ASPEN TECHNOLOGY, INC. 20 CROSBY DRIVE BEDFORD MA 01730 1 Senior VP & General Counsel Common Stock 2022-09-01 4 A 0 4551 0 A 23919 D Employee Stock Option (Right to Buy) 210.60 2022-09-01 4 A 0 7554 210.60 A 2032-08-31 Common Stock 7554 7554 D Each Restricted Stock Unit represents a contingent right to receive one share of Aspen Technology, Inc. common stock. Subject to rounding, the Restricted Stock Units vest in 16 equal consecutive quarterly installments on the last business day of the quarter beginning with the quarter ending September 30, 2022. The Restricted Stock Units were received as a grant for no consideration. The option granted at the exercise price of $210.60 vests, subject to rounding, in 16 equal consecutive quarterly installments on the last business day of the quarter, beginning with the quarter ending September 30, 2022. /s/ F. G. Hammond 2022-09-06