FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * EVNIN LUKE   2. Issuer Name and Ticker or Trading Symbol Pacira Pharmaceuticals, Inc. [PCRX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O MPM ASSET MANAGEMENT, 200 CLARENDON STREET, 54TH FLOOR 3. Date of Earliest Transaction (Month/Day/Year) 05/28/2013 (Street) BOSTON, MA 02116 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 05/28/2013   S(1)   114,837 (2) D $ 30.62 (3) 1,061,535 I See Footnote (4) Common Stock 05/28/2013   S(1)   74,980 (5) D $ 31.38 (6) 986,555 I See Footnote (7) Common Stock 05/28/2013   S(1)   5,300 (8) D $ 32.14 (9) 981,255 I See Footnote (10) Common Stock 05/29/2013   S(1)   20,411 (11) D $ 30 960,844 I See Footnote (12) Common Stock               22,746 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
EVNIN LUKE C/O MPM ASSET MANAGEMENT 200 CLARENDON STREET, 54TH FLOOR BOSTON, MA 02116	X

Signatures

/s/ Luke Evnin		05/30/2013
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	This transaction was pursuant to a 10b5-1 Plan.
(2)	The shares were sold as follows: 107,625 by MPM BioVentures IV-QP, L.P. ("BV IV QP"), 4,146 by MPM BioVentures IV GmbH & Co. Beteiligungs KG ("BV IV KG") and 3,066 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.
(3)	Represents the average sales price. The shares were sold between $30.00 and $31.00. The Reporting Person will provide upon request to the SEC, the Issuer, or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
(4)	The shares are held as follows: 994,948 by BV IV QP, 38,334 by BV IV KG and 28,253 by AM BV4. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.
(5)	The shares were sold as follows: 70,271 by BV IV QP, 2,707 by BV IV KG and 2,002 by AM BV4.
(6)	Represents the average sales price. The shares were sold between $31.01 and $32.01. The Reporting Person will provide upon request to the SEC, the Issuer, or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
(7)	The shares are held as follows: 924,677 by BV IV QP, 35,627 by BV IV KG and 26,251 by AM BV4. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.
(8)	The shares were sold as follows: 4,968 by BV IV QP, 191 by BV IV KG and 141 by AM BV4.
(9)	Represents the average sales price. The shares were sold between $32.12 and $32.33. The Reporting Person will provide upon request to the SEC, the Issuer, or security holder of the Issuer, full information regarding the number of shares sold at each separate price.
(10)	The shares are held as follows: 919,709 by BV IV QP, 35,436 by BV IV KG and 26,110 by AM BV4. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.
(11)	The shares were sold as follows: 19,129 by BV IV QP, 737 by BV IV KG and 545 by AM BV4.
(12)	The shares are held as follows: 900,580 by BV IV QP, 34,699 by BV IV KG and 25,565 by AM BV4. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.

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