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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
929940	Aspen Technology Inc	AZPN	Services-Computer Programming Services (7371)	042739697

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1197694	M Stephen Jennings	Aspen Technology, Inc. 200 Wheeler Road Burlington MA 01803		No	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2011-09-07	8,000	$15.04	24,209	No	4	M	Direct
Common Stock	Acquisiton	2011-09-07	3,253	$15.04	27,462	No	4	M	Direct
Common Stock	Disposition	2011-09-07	11,253	$16.66	16,209	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Director Stock Option (Right to Buy)	Disposition	2011-09-07	8,000	$0.00	8,000	$15.04
Common Stock	Director Stock Option (Right to Buy)	Disposition	2011-09-07	3,253	$0.00	3,253	$15.04

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0		2011-12-10	No	4	M	Direct
0		2011-12-10	No	4	M	Direct

Footnotes

On the grant date, the option granted at the exercise price of $15.04 was scheduled to vest and become exercisable in four equal installments beginning with the third anniversary of the grant date, provided the optionee remained a director. The option became fully exercisable on August 14, 2003 upon the occurrence of a change in control as defined under the terms of the option plan, as amended.
The option granted at the exercise price of $15.04 was fully vested on the date of grant.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $16.6593 to $16.67, 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 range set forth in this footnote.