UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934 (Amendment No. _______)

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¨ Preliminary Proxy Statement

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¨ Definitive Proxy Statement

þDefinitive Additional Materials

¨ Soliciting Material Pursuant to § 240.14a-11(c) or § 240.14a-12

PACIFIC COAST NATIONAL BANCORP

(Name of Registrant as Specified in Its Charter)

______________________________________________________

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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[PACIFIC COAST NATIONAL BANCORP LETTERHEAD]

December 30, 2008

Dear Pacific Coast National Bancorp Shareholder:

We recently mailed you proxy materials for our Special Meeting of Shareholders to be held on January 15, 2009.  At that meeting, shareholders will be asked to approve an amendment to our articles of incorporation to authorize the issuance of preferred stock.  Shareholder approval of this amendment will enable us to participate in the Troubled Asset Relief Program (TARP) Capital Purchase Program of the U.S. Department of the Treasury, for which we have been preliminarily approved by the Treasury to receive a $4.1 million investment.

According to our records, we have not yet received your proxy. It is very important that your shares be voted, regardless of the number of shares you own.

Please take a moment to VOTE your shares by signing and returning your proxy in the envelope provided.  You can also vote by telephone or the internet by following the enclosed instructions.

Our Board of Directors unanimously recommends that you vote “FOR” the amendment to our articles of incorporation.

Please disregard this letter if you have already voted your shares.  Thank you for your cooperation and support.

Sincerely,

/s/ Michael S. Hahn

Michael S. Hahn

President and Chief Executive Officer