2015-07792. Formations of, Acquisitions by, and Mergers of Bank Holding Companies

The companies listed in this notice have applied to the Board for approval, pursuant to the Bank Holding Company Act of 1956 (12 U.S.C. 1841 et seq.) (BHC Act), Regulation Y (12 CFR part 225), and all other applicable statutes and regulations to become a bank holding company and/or to acquire the assets or the ownership of, control of, or the power to vote shares of a bank or bank holding company and all of the banks and nonbanking companies owned by the bank holding company, including the companies listed below.

The applications listed below, as well as other related filings required by the Board, are available for immediate inspection at the Federal Reserve Bank indicated. The applications will also be available for inspection at the offices of the Board of Governors. Interested persons may express their views in writing on the standards enumerated in the BHC Act (12 U.S.C. 1842(c)). If the proposal also involves the acquisition of a nonbanking company, the review also includes whether the acquisition of the nonbanking company complies with the standards in section 4 of the BHC Act (12 U.S.C. 1843). Unless otherwise noted, nonbanking activities will be conducted throughout the United States.

Unless otherwise noted, comments regarding each of these applications must be received at the Reserve Bank indicated or the offices of the Board of Governors not later than May 1, 2015.

A. Federal Reserve Bank of San Francisco (Gerald C. Tsai, Director, Applications and Enforcement) 101 Market Street, San Francisco, California 94105-1579:

1. PacWest Bancorp, and Pacific Western Bank, both in Los Angeles, California; merge with Square 1 Financial, Inc., and thereby indirectly acquire Square 1 Bank, both in Durham, North Carolina.

In connection with this application, Applicants have also applied to acquire Square 1 Venture Management 1, L.P., Durham, North Carolina, and thereby engage in funds management, investment advisory, and private placement activities, pursuant to sections 225.28(b)(6)(i), (b)(7)(i) and (b)(7)(iii), respectively.

Board of Governors of the Federal Reserve System, April 1, 2015.

Michael J. Lewandowski,

Associate Secretary of the Board.