PACW PacWest Bancorp

STOCKTON, Calif., April 25 /PRNewswire-FirstCall/ -- John Sumpter, Vice President of Regulatory at Pac-West (NASDAQ:PACW), will participate in a panel that will discuss Internet neutrality hosted by the Commonwealth Club Silicon Valley and Santa Clara University. WHAT: The Commonwealth Club Silicon Valley is co-hosting a panel discussion on Internet neutrality. WHY: Net neutrality is the single most important issue facing Silicon Valley businesses, Internet activists and consumer groups. Net neutrality is the principle that network operators should deliver all Internet free of discrimination, regardless of origin, destination or content. WHERE: Santa Clara University Recital Hall Santa Clara, CA WHEN: Tuesday, April 25, 2006 6:30 p.m. Check-in/Light reception, 7 p.m. Program WHO: John Sumpter, Vice President, Pac-West (panelist) Mr. Sumpter has over 30 years of experience in the telecommunications industry. Prior to joining Pac-West, he held several executive level regulatory and marketing positions at AT&T. He currently serves as Chairman of the Board of the California Association of Competitive Telecommunications Companies (CALTEL) and the California Alliance for Consumer Education (CACE) and as a Board Member for COMPTEL. The panel includes Tod Cohen, Vice President and Deputy General Counsel, Government relations for eBay, and Allen Hammond, Program Director of Law and Public Policy at The Center for Science, Technology, and Society. Miguel Helft, Editorial Writer for the San Jose Mercury News, is moderator. Mr. Sumpter will be available to meet with media before and after the event. About Pac-West Telecomm, Inc. Pac-West is a provider of advanced communications services that enable traditional and next-generation providers, carriers, and service providers to efficiently design, deploy, and deliver integrated communication solutions. Currently, Pac-West has operations in California, Nevada, Washington, Arizona, Utah, and Oregon. Founded in 1980, Pac-West Telecomm, Inc. has been offering communication services to its customers since 1982 and has been a leading provider of wholesale services to Internet Service Providers. For more information, visit http://www.pacwest.com/. Forward-Looking Statements In this press release, our use of the words "outlook," "expect," "anticipate," "estimate," "forecast," "project," "likely," "objective," "plan," "designed," "goal," "target," and similar expressions is intended to identify forward-looking statements. While these statements represent our current judgment on what the future may hold, and we believe these judgments are reasonable, actual results may differ materially due to numerous important risk factors that are described in our Annual Report on Form 10-K for the period ended December 31, 2005, as filed with the SEC on March 29, 2006, which may be revised or supplemented in subsequent reports filed by us with the SEC. Such risk factors include, but are not limited to: our level of indebtedness; an inability to generate sufficient cash to service our indebtedness; regulatory and legal uncertainty with respect to intercarrier compensation payments received by us; the migration to broadband Internet access affecting dial-up Internet access; the loss of key executive officers could negatively impact our business prospects; an increase in our network expenses; migration of our enterprise customer base to U.S. TelePacific Corp. occurring sooner or later than contemplated; the possible delisting of our common shares from the Nasdaq SmallCap Market; and our principal competitors for local services and potential additional competitors have advantages that may adversely affect our ability to compete with them. DATASOURCE: Pac-West Telecomm, Inc. CONTACT: press, John Amaya, +1-209-926-4371, or , or investors, Reid Cox, +1-209-926-3417, or , both of Pac-West Telecomm, Inc. Web site: http://www.pacwest.com/

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