Stack David M Form 4 Pacira Pharmaceuticals / DAVID M STACK ownership change

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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

1. Name and Address of Reporting Person^*

STACK DAVID M

(Last) (First) (Middle)

C/O PACIRA PHARMACEUTICALS, INC.

5 SYLVAN WAY, SUITE 300

(Street)

PARSIPPANY NJ 07054

(City) (State) (Zip)

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
X	Officer (give title below)	Other (specify below)
CEO and Chairman

3. Date of Earliest Transaction (Month/Day/Year)
11/15/2017

4. If Amendment, Date of 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

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	11/15/2017		M(1)		28,885	A	$1.61	159,164	D
Common Stock	11/15/2017		S(1)		56,985	D	$38.32(2)	102,179	D
Common Stock	11/15/2017		S(1)		1,900	D	$38.97(3)	100,279	D
Common Stock								18,596	I	By Stack Schroon Mohawk FLP(4)
Common Stock								1,208	I	By LCK Investment LLC(4)

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 Securities Underlying Derivative Security (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: 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
Stock Option (Right to Buy)	$1.61	11/15/2017		M			28,885	(5)	09/02/2020	Common Stock	28,885	$0.00	112,075	D

Explanation of Responses:

1. The option exercise and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $37.85 to $38.80, inclusive. The reporting person undertakes to provide to the issuer, any shareholder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes 2 and 3.

3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $38.85 to $39.10, inclusive.

4. Mr. Stack is the general partner of Stack Schroon Mohawk FLP. Mr. Stack and his wife are the owners of LCK Investment LLC.

5. The option vested as to 50% of the option shares on February 2, 2011, 19,378 option shares vested on February 3, 2011, and the remaining option shares vested in successive monthly installments for the subsequent 19 months.

Remarks:

	/s/ Kristen Williams, Attorney-in-Fact	11/17/2017
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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