(AZPN)

Role: President & CEO, Director
Signature: /s/ F.G. Hammond, attorney-in-fact for Mr. Pietri
Stock symbol: AZPN
Transactions as of: May 28, 2021
Transactions value $: -$4,544,533
Form type: 4
Date filed: 6/2/2021, 04:10 PM
Next filing: Jul 2, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AZPN	Common Stock	Options Exercise	$2.09M	+48K	+20.24%	$43.44^*	285K	May 28, 2021	Direct
transaction	AZPN	Common Stock	Sale	-$1.42M	-10.4K	-3.63%	$136.61^*	275K	May 28, 2021	Direct	F1
transaction	AZPN	Common Stock	Sale	-$1.77M	-12.9K	-4.7%	$137.46^*	262K	May 28, 2021	Direct	F1
transaction	AZPN	Common Stock	Sale	-$1.68M	-12.1K	-4.63%	$138.61^*	250K	May 28, 2021	Direct	F1
transaction	AZPN	Common Stock	Sale	-$1.76M	-12.6K	-5.05%	$139.33^*	237K	May 28, 2021	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	AZPN	Employee Stock Option (Right to Buy)	Options Exercise	$0	-48K	-100%	$0.00^*	0	May 28, 2021	Common Stock	48K	$43.44	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $136.27 to $136.99; $137.00 to $137.98; $138.00 to $138.99 and $139.00 to $139.67, inclusive. The reporting person undertakes to provide to Aspen Technology, Inc., any security holder of Aspen Technology, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the applicable range set forth in this footnote.
F2	The option granted at the exercise price of $43.44 vested in 16 equal consecutive quarterly installments on the last business day of the quarter, beginning on September 30, 2014.

Content

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $136.27 to $136.99; $137.00 to $137.98; $138.00 to $138.99 and $139.00 to $139.67, inclusive. The reporting person undertakes to provide to Aspen Technology, Inc., any security holder of Aspen Technology, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the applicable range set forth in this footnote.

The option granted at the exercise price of $43.44 vested in 16 equal consecutive quarterly installments on the last business day of the quarter, beginning on September 30, 2014.