The Company specifically disclaims any obligation to update any factors or to publicly announce the result of revisions to any of the forward-looking statements included herein to reflect future events or developments.Notice to San Diego Trust Bank (“SDTB”) Shareholders This press release does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. In connection with the proposed acquisition of SDTB by the Company, the Company filed a registration statement on Form S-4 (the "Registration Statement") with the Securities and Exchange Commission ("SEC"), which contains a proxy statement of SDTB and a prospectus of the Company (collectively, the "proxy statement/prospectus"). The Registration Statement was declared effective by the SEC on May 9, 2013 and a definitive proxy statement/prospectus was subsequently distributed to the shareholders of SDTB on or about May 17, 2013 in connection with their vote on the proposed acquisition of SDTB. SHAREHOLDERS OF SDTB ARE ENCOURAGED TO READ THE REGISTRATION STATEMENT AND THE DEFINITIVE PROXY STATEMENT/PROSPECTUS AND ALL OTHER RELEVANT DOCUMENTS FILED WITH THE SEC, AS WELL AS SUPPLEMENTS TO THOSE DOCUMENTS, BECAUSE THEY CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED ACQUISITION OF SDTB BY THE COMPANY. Investors and security holders are able to obtain the definitive proxy statement/prospectus and the other documents free of charge at the SEC's website, www.sec.gov. In addition, documents filed with the SEC by the Company are available free of charge by (1) accessing the Company’s website at www.ppbi.com under the "Investor Relations" link and then under the heading "SEC Filings," (2) writing the Company at 17901 Von Karman Ave., Suite 1200, Irvine, California 92614, Attention: Investor Relations or (3) writing SDTB at 2550 Fifth Avenue, Suite 1010, San Diego, CA 92103, Attention: Corporate Secretary. The directors, executive officers and certain other members of management and employees of the Company may be deemed to be participants in the solicitation of proxies in favor of the proposed acquisition from the shareholders of SDTB. Information about the directors and executive officers of the Company is included in the proxy statement for its 2013 annual meeting of the Company’s stockholders, which was filed with the SEC on April 16, 2013. The directors, executive officers and certain other members of management and employees of SDTB may also be deemed to be participants in the solicitation of proxies in favor of the proposed acquisition from the shareholders of SDTB. Information about the directors and executive officers of SDTB is included in the definitive proxy statement/prospectus for the proposed acquisition of SDTB. 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 definitive proxy statement/prospectus regarding the proposed acquisition. You may obtain free copies of this document as described in the preceding paragraph.