8-K 1 arm05001_10505.txt 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 (Date of earliest event reported): May 25, 2005 ADJUSTABLE RATE MORTGAGE TRUST Adjustable Rate Mortgage-Backed P/T Cert, Series 2005-1 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-120966-03 Pooling and Servicing Agreement) (Commission 54-2165620 (State or other File Number) 54-2165621 jurisdiction 54-2165622 of Incorporation) 54-2165623 IRS EIN C/O Wells Fargo Bank, N.A. 9062 Old Annapolis Road Columbia, MD 21045 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (410) 884-2000 (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 (see General Instruction A.2. below): [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 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 8.01 Other Events On May 25, 2005 a distribution was made to holders of ADJUSTABLE RATE MORTGAGE TRUST, Adjustable Rate Mortgage-Backed P/T Cert, Series 2005-1 Trust. ITEM 9.01 Financial Statements and Exhibits (c) Exhibits Exhibit Number Description EX-99.1 Monthly report distributed to holders of Adjustable Rate Mortgage-Backed P/T Cert , Series 2005-1 Trust, relating to the May 25, 2005 distribution. Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ADJUSTABLE RATE MORTGAGE TRUST Adjustable Rate Mortgage-Backed P/T Cert, Series 2005-1 Trust (Registrant) By: Wells Fargo Bank, N.A. as Trust Administrator By: /s/ Beth Belfield as Officer By: Beth Belfield as Officer Date: 5/31/05 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Adjustable Rate Mortgage-Backed P/T Cert, Series 2005-1 Trust, relating to the May 25, 2005 distribution. EX-99.1

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CSFB ADJUSTABLE RATE MORTGAGE TRUST 2005-1 8-K