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| PacWest Bancorp Merger with CapitalSource Inc. ADDITIONAL INFORMATION ABOUT THE PROPOSED TRANSACTION ANDWHERE TO FIND IT Page 18 Investors and security holders are urged to carefully review and consider each of PacWest Bancorp’s and CapitalSource Inc.’s public filings with the SEC, including but not limited to their Annual Reports on Form 10-K, their proxy statements, their current reports on form 8-K, and their Quarterly Reports on Form 10-Q. The documents filed by PacWest with the SEC may be obtained free of charge at PacWest’s website at www.pacwestbancorp.com or at the SEC’s website at www.sec.gov. These documents may also be obtained free of charge from PacWest by requesting them in writing to PacWest Bancorp, c/o Pacific Western Bank, 275 North Brea Boulevard, Brea, CA 92821; Attention: Investor Relations, or by telephone at (714) 671-6800. The documents filed by CapitalSource with the SEC may be obtained free of charge at CapitalSource’s website at www.capitalsource.com or at the SEC’s website at www.sec.gov. These documents may also be obtained free of charge from CapitalSource by requesting them in writing to CapitalSource Inc., 633 West 5th Street, 33rd Floor, Los Angeles, CA 90071, Attention: Investor Relations, or by telephone at Phone: (866) 876-8723. This communication 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. PacWest Bancorp intends to file a registration statement with the SEC which will include a joint proxy statement of PacWest and CapitalSource and a prospectus of PacWest, and each party will file other documents regarding the proposed transaction with the SEC. Before making any voting or investment decision, investors and security holders of CapitalSource and PacWest Bancorp are urged to carefully read the entire registration statement and joint proxy statement/prospectus, when they become available, as well as any amendments or supplements to these documents, because they will contain important information about the proposed transaction. A definitive joint proxy statement/prospectus will be sent to the stockholders of each institution seeking any required stockholder approvals. Investors and security holders will be able to obtain the registration statement and the joint proxy statement/prospectus free of charge from PacWest or CapitalSource by writing to the addresses provided for each company set forth in the paragraphs above. Information about the directors and executive officers of PacWest and their ownership of PacWest common stock is set forth in the proxy statement for PacWest’s 2013 annual meeting of stockholders, as previously filed with the SEC. CapitalSource, its directors, executive officers and certain other persons may be soliciting proxies from CapitalSource stockholders in favor of the approval of the acquisition. Information about the directors and executive officers of CapitalSource and their ownership of CapitalSource common stock is set forth in the proxy statement for CapitalSource’s 2013 annual meeting of stockholders, as previously filed with the SEC. Stockholders may obtain additional information regarding the interests of such participants by reading the registration statement and the joint proxy statement/prospectus when they become available. July 22, 2013 |