UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K/A

(Amendment No. 1)

x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2004

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from              to             

Commission file number 0-18561

AMERICANWEST BANCORPORATION

(Exact name of registrant as specified in its charter)

Washington	91-1259511
(State or other jurisdiction of incorporation)	(IRS Employer Identification No.)

41 West Riverside Avenue, Suite 400

Spokane, Washington 99201

(Address of principal executive offices, including zip code)

Registrant’s telephone number, including area code (509) 467-6993

Securities registered pursuant to Section 12(b) of the Act: None

Securities registered pursuant to section 12(g) of the Act:

Common Stock, no par value

Title of each class

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    YES  x    NO  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendments to this Form 10-K.  ¨

Indicate by check mark whether the registrant is an accelerated filer (as defined in Exchange Act Rule 12b-2).    YES  x    NO  ¨

The aggregate market value of the common stock was held by non-affiliates of the registrant is approximately $195,589,000 based on the June 30, 2004 closing price of the registrant’s common stock as quoted on the Nasdaq National Market of $19.15.

The number of shares of the registrant’s common stock outstanding at February 25, 2005 was 10,356,704.

DOCUMENTS INCORPORATED BY REFERENCE

Documents of the Registrant	Form 10-K Reference Locations
Portions of the 2005 Proxy Statement	PART III

Explanatory Note

This Amendment No. 1 on Form 10-K/A (Amendment No. 1) amends Items 9A and 15 of the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2004, which was filed with the Securities and Exchange Commission on March 15, 2005. The purpose of this Amendment No. 1 is to include Management’s Report on Internal Control Over Financial Reporting (Management’s Report) and the independent registered public accounting firm’s Attestation Report on Internal Control over Financial Reporting. All information contained in this Amendment No. 1 is as of December 31, 2004 and does not reflect any subsequent information or events.

Item 9A. Controls and Procedures. (Amended)

Management’s Report on Internal Control Over Financial Reporting

Management of the Company, including its consolidated subsidiaries, is responsible for establishing and maintaining adequate internal control over financial reporting (as defined in Rule 13a-15(f) under the Securities Exchange Act of 1934). The Company’s internal control over financial reporting is a process designed under the supervision of the Company’s management, including its Chief Executive Officer and its Chief Financial Officer, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of the Company’s financial statements for external reporting purposes in accordance with generally accepted accounting principles in the United States of America.

The Company’s internal control over financial reporting includes policies and procedures that pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect transactions and dispositions of assets; provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles in the United States of America, and that receipts and expenditures are being made only in accordance with authorizations of management and the directors of the Company; and provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the Company’s assets that could have a material effect on the Company’s financial statements.

Management recognizes that there are inherent limitations in the effectiveness of any system of internal control, and accordingly, even effective internal control can provide only reasonable assurance with respect to financial statement preparation and fair presentation. Further, because of changes in conditions, the effectiveness of internal control may vary over time.

Under the supervision and with the participation of the Company’s management, including the Company’s Chief Executive Officer and Chief Financial Officer, the Company conducted an assessment of the effectiveness of the Company’s internal control over financial reporting based on the framework established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on this assessment, management has determined that the Company’s internal control over financial reporting as of December 31, 2004 is effective.

Management’s assessment of the effectiveness of the Company’s internal control over financial reporting as of December 31, 2004 has been audited by Moss Adams LLP, the independent registered public accounting firm who audits the Company’s consolidated financial statements, as stated in their report on the following page, which expresses unqualified opinions on management’s assessment and on the effectiveness of the Company’s internal control over financial reporting as of December 31, 2004.

Report of Independent Registered Public Accounting Firm on Internal Control Over Financial Reporting

To the Board of Directors and Shareholders of

AmericanWest Bancorporation and Subsidiaries

We have audited management’s assessment, included in the accompanying Management’s Report on Internal Control Over Financial Reporting, that AmericanWest Bancorporation and Subsidiaries (AmericanWest Bancorporation or the Company) maintained effective internal control over financial reporting as of December 31, 2004, based on criteria established in Internal Control Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (the COSO criteria). The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting. Our responsibility is to express an opinion on management’s assessment and an opinion on the effectiveness of the Company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, evaluating management’s assessment, testing and evaluating the design and operating effectiveness of internal control, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, management’s assessment that AmericanWest Bancorporation maintained effective internal control over financial reporting as of December 31, 2004, is fairly stated, in all material respects, based on the COSO criteria. Also, in our opinion, AmericanWest Bancorporation maintained, in all material respects, effective internal control over financial reporting as of December 31, 2004, based on the COSO criteria.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated statement of financial condition of AmericanWest Bancorporation as of December 31, 2004 and 2003, and the related consolidated statements of income, stockholders’ equity, and cash flows for each of the three years in the period ended December 31, 2004 and our report dated February 1, 2005, expressed an unqualified opinion thereon.

/s/ Moss Adams LLP

Everett, Washington

April 15, 2005

PART IV

Item 15. Exhibits, Financial Statement Schedules.

23.1	Consent of Independent Registered Public Accounting Firm.
31(a)	Certification of the Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
(b)	Certification of the Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32(a)	Certification of the Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
(b)	Certification of the Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized on the 25th day of April, 2005.

AMERICANWEST BANCORPORATION
By:	/s/ Robert M. Daugherty
	Robert M. Daugherty
	President, Chief Executive Officer and Director

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities indicated on the 25^th day of April, 2005.

Principal Executive Officer:

By:	/s/ Robert M. Daugherty
	Robert M. Daugherty, President, Chief Executive Officer and Director
Principal Financial and Accounting Officer
By:	/s/ C. Tim Cassels
	C. Tim Cassels, Executive Vice President and Chief Financial Officer
Remaining Directors
By:	/s/ James Rand Elliott	By	/s/ Donald H. Swartz, II
	James Rand Elliott, Director		Donald H. Swartz, II, Director
By:	/s/ Allen Ketelsen	By:	/s/ Gary M. Bolyard
	Allen Ketelsen, Director		Gary M. Bolyard, Director
By:	/s/ Craig D. Eerkes	By:	/s/ P. Mike Taylor
	Craig D. Eerkes, Director		P. Mike Taylor, Director
By:	/s/ Donald H. Livingstone
	Donald H. Livingstone, Director