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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1212458	Proofpoint Inc	PFPT	Services-Computer Processing & Data Preparation (7374)	510414846

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1027621	D Jonathan Feiber	3000 Sand Hill Road 3-290 Menlo Park CA 94025	Yes	No	No	No
1129541	Mdv Vii Lp	3000 Sand Hill Road, Bldg. 3, Suite 290 Menlo Park CA 94025	Yes	No	Yes	No
1250354	J Nancy Schoendorf	3000 Sand Hill Road, 3-290 Menlo Park CA 94025	Yes	No	Yes	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	2012-05-23	49,458	$13.00	4,047,334	No	4	S	Direct

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

Footnotes

Shares sold as part of the exercise of the underwriters' over-allotment option in connection with the Issuer's initial public offering.
Shares directly held by MDV VII, L.P. ("MDV"). Jonathan Feiber, a director of the Issuer, and Nancy J. Schoendorf are managing members of Seventh MDV Partners, L.L.C., the general partner of MDV, and may be deemed to share voting and dispositive power over the shares held by MDV. Mr. Feiber and Ms. Schoendorf disclaim beneficial ownership of the shares held by MDV except to the extent of any pecuniary interest therein.