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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1396814	Pacira Pharmaceuticals Inc.	PCRX	Pharmaceutical Preparations (2834)	000000000

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1134657	Luke Evnin	C/O Mpm Asset Management 200 Clarendon Street, 54Th Floor Boston MA 02116		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	Disposition	2013-04-12	10,000	$30.00	1,280,479	No	4	S	Indirect	See Footnote
Common Stock	Disposition	2013-04-15	2,575	$30.00	1,277,904	No	4	S	Indirect	See Footnote

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

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	22,746	Direct

Footnotes

This transaction was pursuant to a 10b5-1 Plan.
The shares were sold as follows: 9,372 by MPM BioVentures IV-QP, L.P. ("BV IV QP"), 361 by MPM BioVentures IV GmbH & Co. Beteiligungs KG ("BV IV KG") and 267 by MPM Asset Management Investors BV4 LLC ("AM BV4"). MPM BioVentures IV GP LLC and MPM BioVentures IV LLC ("BV LLC") are the direct and indirect general partners of BV IV QP and BV IV KG and BV LLC is the manager of AM BV4. The Reporting Person is a member of BV LLC.
The shares are held as follows: 1,200,139 by BV IV QP, 46,239 by BV IV KG and 34,101 by AM BV4. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.
The shares were sold as follows: 2,413 by BV IV QP, 93 by BV IV KG and 69 by AM BV4.
The shares are held as follows: 1,197,726 by BV IV QP, 46,146 by BV IV KG and 34,032 by AM BV4. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.