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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
1407695	J Antonio Pietri	C/O Aspen Technology, Inc. 200 Wheeler Road Burlington MA 01803	President & Ceo	Yes	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2014-08-25	9,900	$42.84	156,135	No	4	S	Direct
Common Stock	Disposition	2014-08-26	100	$42.58	156,035	No	4	S	Direct

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

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	1,068	Indirect	Held By Spouse By IRA

Footnotes

This sale was effected pursuant to a Rule 10b5-1 trading plan completed and executed by the reporting person on May 29, 2014.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $42.69 to $43.05, 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.