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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1339455	Somaxon Pharmaceuticals Inc.	SOMX	Pharmaceutical Preparations (2834)	200161599

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1173408	L.p. Iii Bioventures Mpm	C/O Mpm Asset Management 200 Clarendon Street, 54Th Floor Boston MA 02116	No	No	Yes	No
1173409	L.p. Iii-Qp Bioventures Mpm	C/O Mpm Asset Management 200 Clarendon Street, 54Th Floor Boston MA 02116	No	No	Yes	No
1249063	Mpm Bioventures Iii Parallel Fund, L.p.	C/O Mpm Asset Management 200 Clarendon Street, 54Th Floor Boston MA 02116	No	No	Yes	No
1249133	Mpm Bioventures Iii Gmbh & Co. Beteiligungs Kg	C/O Mpm Asset Management 200 Clarendon Street, 54Th Floor Boston MA 02116	No	No	Yes	No
1249143	L.p. Gp Iii Bioventures Mpm	C/O Mpm Asset Management 200 Clarendon Street, 54Th Floor Boston MA 02116	No	No	Yes	No
1249147	Mpm Bioventures Iii Llc	C/O Mpm Asset Management 200 Clarendon Street, 54Th Floor Boston MA 02116	No	No	Yes	No
1346986	Mpm Asset Management Investors 2005 Bviii Llc	C/O Mpm Asset Management 200 Clarendon Street, 54Th Floor Boston MA 02116	No	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	2012-06-19	12,000	$0.29	3,769,735	No	4	S	Indirect	See Footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	See Footnote

Footnotes

The shares were sold as follows: 10,003 by MPM BioVentures III-QP, L.P. ("BV III QP"), 673 by MPM BioVentures III, L.P. ("BV III"), 177 by MPM Asset Management Investors 2005 BVIII LLC ("AM 2005"), 302 by MPM BioVentures III Parallel Fund, L.P. ("BV Parallel") and 845 by MPM BioVentures III GmbH & Co. Beteiligungs KG ("BV KG"). MPM BioVentures III GP, L.P. ("MPM III GP") and MPM BioVentures III LLC ("MPM III LLC") are the direct and indirect general partners of BV III QP, BV III, BV Parallel and BV KG. Luke Evnin, Ansbert Gadicke, Nicholas Galakatos, Dennis Henner, Nicholas Simon III, Michael Steinmetz and Kurt Wheeler are the Series A members of MPM III LLC and the managers of AM 2005.
The shares are held as follows: 3,142,318 by BV III QP, 211,293 by BV III, 55,665 by AM 2005, 94,920 by BV Parallel and 265,539 by BV KG. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein.