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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1113148	Infinity Pharmaceuticals Inc.	INFI	Pharmaceutical Preparations (2834)	330655706

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1300247	H Steven Holtzman	C/O Infinity Pharmaceuticals, Inc. 780 Memorial Drive Cambridge MA 02139		Yes	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	Disposition	2012-05-18	15,000	$0.00	257,834	No	5	G	Direct
Common Stock	Disposition	2012-05-29	189,303	$13.00	68,531	No	4	S	Direct
Common Stock	Disposition	2012-05-30	10,958	$13.00	57,573	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	5	G	Direct
No	4	S	Direct
No	4	S	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	3,945	Indirect	By IRA
Common Stock	177,364	Indirect	By Holtzman-Stewart 1996 Irrevocable Trust

Footnotes

Gift made to charity without consideration.
These shares were previously owned indirectly through the Infinity Pharmaceuticals, Inc. 401(k) Plan (the "Plan"). Consists of (i) 2,701 shares that were previously reported as directly owned due to an administrative error on the reporting person's Form 4 filed on December 13, 2010 and (ii) 1,244 shares that the reporting person acquired under the Plan.
The reporting person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein.