SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Pursuant to Section 13 or 15(d) of
the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported):
January 31, 2013
WEST COAST BANCORP
(Exact name of registrant as specified in
(State or other jurisdiction of incorporation)
(SEC File Number)
(IRS Employer Identification No.)
|5335 Meadows Road, Suite 201
|Lake Oswego, Oregon
|(Address of principal executive offices)
Registrant’s telephone number, including
Check the appropriate box below if the Form 8-K
filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
|x||Written communications pursuant to Rule 425 under
the Securities Act (17 CFR 230.425)
|¨||Soliciting material pursuant to Rule 14a-12 under
the Exchange Act (17 CFR 240.14a-12)
|¨||Pre-commencement communications pursuant to Rule 14d-2(b)
under the Exchange Act (17 CFR 240.14d-2(b))
|¨||Pre-commencement communications pursuant to Rule 13e-4(c)
under the Exchange Act (17 CFR 240.13e-4(c))
Item 8.01. Other Events.
This Current Report on Form 8-K is being
filed solely for the purpose of incorporating it by reference to the Registration Statement on Form S-4 filed by Columbia Banking
System, Inc. (“Columbia”) in connection with the pending merger between Columbia and West Coast Bancorp (“West
Coast”). No changes or modifications have been made to the press release of January 24, 2013, announcing West Coast’s
financial results for the fourth quarter and full year ended December 31, 2012, which is filed as Exhibit 99.1 to this report
and incorporated by reference, and which was previously furnished as Exhibit 99.1 to the Current Report on Form 8-K filed
by West Coast on January 30, 2013.
Important Additional Information
In connection with the merger, on November
2, 2012, Columbia filed with the SEC a Registration Statement on Form S-4 that includes a Joint Proxy Statement of Columbia and
West Coast as a prospectus, and filed amendments to such Registration Statement on December 28, 2012, January 17, 2013, and January
30, 2013, as well as other relevant documents concerning the proposed transaction. SHAREHOLDERS OF WEST COAST AND COLUMBIA ARE
URGED TO READ THE REGISTRATION STATEMENT, AS AMENDED, AND THE JOINT PROXY STATEMENT REGARDING THE MERGER AND ANY OTHER RELEVANT
DOCUMENTS FILED WITH THE SEC, BECAUSE THEY CONTAIN IMPORTANT INFORMATION.
A free copy
of the Registration Statement and Joint Proxy Statement, as well as other filings containing information about West Coast and Columbia,
may be obtained at the SEC’s Internet site (http://www.sec.gov). Copies can also be obtained, free of charge, by directing
a written request to Columbia Banking System, Inc., Attention: Corporate Secretary, 1301 A Street, Suite 800, Tacoma, Washington
98401-2156 or to West Coast Bancorp, 5335 Meadows Road, Suite 201, Lake Oswego, Oregon 97035.
Participants in Solicitation
West Coast and Columbia and certain of their
directors and executive officers may be deemed to be participants in the solicitation of proxies from the shareholders of West
Coast and Columbia in connection with the merger. Information about the directors and executive officers of West Coast and their
ownership of West Coast common stock is set forth in the proxy statement for West Coast’s 2012 annual meeting of shareholders,
as filed with the SEC on a Schedule 14A on March 13, 2012. Information about the directors and executive officers of Columbia
and their ownership of Columbia common stock is set forth in the proxy statement for Columbia’s 2012 annual meeting of shareholders,
as filed with the SEC on a Schedule 14A on March 22, 2012. Additional information regarding the interests of those participants
and other persons who may be deemed participants in the transaction may be obtained by reading the Joint Proxy Statement regarding
the merger. Free copies of this document may be obtained as described in the preceding paragraph.
Item 9.01. Financial Statements and Exhibits.
(d) Exhibits: The following exhibit is filed with this Form
99.1 Press Release dated January 24, 2013.
Pursuant to the requirements of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
||WEST COAST BANCORP|
|Dated: January 31, 2013
||/s/ Kevin McClung
||Vice President and Controller