As filed with the Securities and Exchange Commission on October 24, 2001 Registration No. 333-57954 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Post-Effective Amendment No. 1 to Form S-3 Registration Statement Under the Securities Act of 1933 CRAY INC. (Exact name of registrant as specified in its charter) WASHINGTON 93-0962605 (State or other jurisdiction (IRS Employer of incorporation or organization) Identification No.) 411 First Avenue South Suite 600 Seattle, WA 98104 (206) 701-2000 (telephone) (206) 701-2500 (facsimile) (Address, including zip code, and telephone and facsimile numbers, including area code, of principal executive offices) Kenneth W. Johnson, Chief Financial Officer Cray Inc. 411 First Avenue South Suite 600 Seattle, WA 98104 (206) 701-2000 (telephone) (206) 701-2500 (facsimile) (Name, address, including zip code, and telephone and facsimile numbers, including area code, of agent for service) Copy to: Christopher J. Voss Stoel Rives LLP One Union Square, 36th Floor Seattle, WA 98101-3197 (206) 624-0900 (telephone) (206) 386-7500 (facsimile) Approximate Date of Commencement of Proposed Sale to the Public: October 12, 2001. This Post-Effective No. 1 shall become effective in accordance with Section 8(c) of the Securities Act of 1933, as amended. 1 Silicon Graphics, Inc., the selling shareholder, has informed us that it has sold in ordinary way brokerage transactions all of the remaining 140,000 shares of our common stock covered by the Prospectus, dated October 12, 2001, which is a part of this Registration Statement, and that it holds no more shares of our common stock. 2 SIGNATURES Pursuant to the requirements of the Securities Act of 1933, as amended, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this post-effective amendment no. 1 to registration statement no. 333-57954 to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Seattle, State of Washington, on October 24, 2001. CRAY INC. By: /s/ ------------------------------------ James E. Rottsolk Chairman of the Board of Directors 3 Pursuant to the requirements of the Securities Act of 1933, as amended, this post-effictive amendment no. 1 to registration statement no. 333-57954 has been signed by the following persons in the capacities indicated below on the 24th day of October, 2001: Signature and Title /s/ * -------------------------------------- ------------------------------------ James E. Rottsolk, Chairman of the Daniel J. Evans, Director Board of Directors * * -------------------------------------- ------------------------------------ Burton J. Smith, Director Stephen C. Kiely, Director * * -------------------------------------- ------------------------------------ Terren S. Peizer, Director Kenneth W. Kennedy, Director * * -------------------------------------- ------------------------------------ David N. Cutler, Director William A. Owens, Director * /s/ -------------------------------------- ------------------------------------ Dean D. Thornton, Director Kenneth W. Johnson Chief Financial Officer /s/ -------------------------------------- Douglas C. Ralphs, Chief Accounting Officer /s/ /s/ -------------------------------------- ------------------------------------ *James E. Rottsolk Michael P. Haydock, President, Attorney-in-Fact Chief Executive Officer and Director 4