Frontier Financial Corporation to Participate in Sandler O'Neill & Partners, L.P. West Coast Financial Services Conference

Frontier Financial Corporation (NASDAQ: FTBK) reported today that it would be participating in the Sandler O'Neill & Partners, L.P. West Coast Financial Services Conference to be held in Aviara, North San Diego, California on March 9, 2006. John J. Dickson, President and CEO of Frontier Financial Corporation and CEO of Frontier Bank, is scheduled to present at the conference at 1:15 p.m. PST.

Interested individuals can access a 'live' broadcast of the presentation over the Internet by accessing http://www.sandleroneill.com and registering with Sandler O'Neill.

The "live" conference will also be available via audio conference by dialing 866-362-5158.

Frontier is a Washington-based financial holding company providing financial services through its commercial bank subsidiary, Frontier Bank. Frontier offers a wide range of financial services to businesses and individuals in its market area, including investment and insurance products.

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