UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 8-K CURRENT REPORT Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 Date of Report: April 26, 2010 Frontier Financial Corporation (Exact name of registrant as specified in its charter)
Washington (State of incorporation or organization)	000-15540 (Commission File Number)		91-1223535 (I.R.S. Employer Identification No.)
332 S.W. Everett Mall Way P.O. Box 2215 Everett, Washington (Address of principal executive offices)		98204 (Zip Code)
Registrant’s telephone number, including area code: (425) 514-0700

(Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12(b) under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01 Regulation FD Disclosure.

Management of Frontier Financial Corporation (Nasdaq: FTBK) (“Frontier”) recently learned of rumors on the Internet on April 26, 2010, that an investment group called Infinite Freedom Foundation was in the process of making a bid for Frontier. Frontier’s president and chief executive officer, Patrick M. Fahey, said that while normally he would not as a matter of company policy comment on rumors, given the recent speculation on the Internet and elsewhere, he advises that to the company’s knowledge there is no basis for the rumor.

The information contained in this Item 7.01 disclosure and Exhibit 99.1 included with this Current Report, is being furnished pursuant to Item 7.01 and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall such information be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange Act, except as otherwise stated in such filing.

A copy of the related press release dated April 27, 2010, is attached as Exhibit 99.1 and incorporated by reference in this report.

Item 9.01 Financial Statements and Exhibits.

(a) Not applicable.

(b) Not applicable.

Exhibit 99.1	Press Release dated April 27, 2010.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	FRONTIER FINANCIAL CORPORATION
	(Registrant)
April 27, 2010	/s/ Patrick M. Fahey
(Date)	Patrick M. Fahey Chief Executive Officer

Exhibit Index

99.1	Press Release dated April 27, 2010.

FRONTIER FINANCIAL CORP /WA/ 8-K