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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1276591	Hansen Medical Inc	HNSN	Orthopedic, Prosthetic & Surgical Appliances & Supplies (3842)	000000000

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1162059	C Russell Hirsch	435 Tasso Street Suite 200 Palo Alto CA 94301		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	Explanation
Common Stock	Acquisiton	2010-04-21	123,125	$2.00	1,792,920	No	4	P	Indirect	By Prospect Venture Partners II, L.P.
Common Stock	Acquisiton	2010-04-21	1,875	$2.00	27,302	No	4	P	Indirect	By Prospect Associates II, L.P.

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	By Prospect Venture Partners II, L.P.
No	4	P	Indirect	By Prospect Associates II, L.P.

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	39,030	Direct

Footnotes

The shares are owned by Prospect Venture Partners II, L.P. ("PVP II"), which is under common control with Prospect Associates II, L.P. ("PA II"). Prospect Management Co. II, L.L.C. ("PMC II") serves as the sole general partner of PVP II. Russell C. Hirsch, M.D., Ph.D. is a Managing Director of PMC II and shares voting and investment power over the shares held by PVP II. The Reporting Person disclaims beneficial ownership of the shares held by PVP II except to the extent of his proportionate pecuniary interest therein.
The shares are owned by PA II. PMC II serves as the sole general partner of PA II. Russell C. Hirsch, M.D., Ph.D. is a Managing Director of PMC II and shares voting and investment power over the shares held by PA II. The Reporting Person disclaims beneficial ownership of the shares held by PA II except to the extent of his proportionate pecuniary interest therein.