FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF 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 *   PIECZYNSKI JAMES 2. Date of Event Requiring Statement (Month/Day/Year) 04/08/2014 3. Issuer Name and Ticker or Trading Symbol PACWEST BANCORP [PACW] (Last) (First) (Middle) 10250 CONSTELLATION BLVD., SUITE 1640 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Executive Vice President 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) LOS ANGELES, CA 90067 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 Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 229,721 (1) D   Common Stock 317 (1) I By Pieczynski Living Trust (2) Common Stock 1,134 (1) I By spouse

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
PIECZYNSKI JAMES 10250 CONSTELLATION BLVD., SUITE 1640 LOS ANGELES, CA 90067	  X	Â	  Executive Vice President	Â

Signatures

/s/ Kori L. Ogrosky, Attorney-in-Fact		04/10/2014
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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)	In connection with the merger of CapitalSource Inc. with and into PacWest Bancorp on April 7, 2014 pursuant to the Agreement and Plan of Merger, dated July 22, 2013, as amended, between PacWest and CapitalSource, the reporting person received the PacWest common stock reported above, together with $828,842 in cash, in exchange for (i) 330,410 shares of CapitalSource common stock held directly, (ii) 1,119 shares of CapitalSource common stock held by the Pieczynski Living Trust, (iii) 4,000 shares of CapitalSource common stock held by the reporting person's spouse, (iv) 64,352 restricted stock units of CapitalSource and (v) 1,160,000 in-the-money options to purchase CapitalSource common stock, after surrendering an aggregate of 146,577 shares of PacWest common stock to satisfy tax withholdings. On April 7, 2014, the effective date of the merger, the closing price of CapitalSource's common stock was $15.50 per share and the closing price of PacWest's common stock was $45.83 per share.
(2)	The reporting person and his spouse serve as the trustees for the trust.
  Remarks: Exhibit 24.1 - Power of Attorney

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