1 As filed with the Securities and Exchange Commission on September 6, 2006 Registration No. 333-133849 ================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 TO THE FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 LIBERTY BANCORP, INC. (Exact name of registrant as specified in its charter) MISSOURI 6035 20-4447023 (State or other jurisdiction (Primary Standard Industrial (I.R.S. Employer Identification No.) of incorporation or organization) Classification Code Number) 16 WEST FRANKLIN STREET LIBERTY, MISSOURI 64068 (816) 781-4822 (Address, including zip code, and telephone number, including area code, of registrant's principal executive offices) BRENT M. GILES PRESIDENT AND CHIEF EXECUTIVE OFFICER LIBERTY BANCORP, INC. 16 WEST FRANKLIN STREET LIBERTY, MISSOURI 64068 (816) 781-4822 (Name, address, including zip code, and telephone number, including area code, of agent for service) COPIES TO: JOEL E. RAPPOPORT, ESQ. MULDOON MURPHY & AGUGGIA LLP 5101 WISCONSIN AVENUE, N.W. WASHINGTON, D.C. 20016 (202) 362-0840 Sale to the public concluded July 21, 2006. ================================================================================ 2 This Post-Effective Amendment No. 1 is filed for the purpose of deregistering 688,527 shares of the $.01 par value common stock (the "Common Stock") of Liberty Bancorp, Inc. (the "Company"), heretofore registered and offered pursuant to the terms of the Prospectus dated May 15, 2006. The remaining 4,760,173 shares registered pursuant to this Registration Statement on Form S-1 have been issued in accordance with the Prospectus in the Subscription and Community Offerings described therein. The Company has determined that no further shares will be offered, sold, issued and/or exchanged pursuant to the Prospectus. The Company therefore requests deregistration of the unissued shares of Common Stock pursuant to this Registration Statement as soon as it practicable after the filing of this Post-Effective Amendment No. 1. 3 SIGNATURES Pursuant to the requirements of the Securities Act of 1933, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Liberty, State of Missouri, on September 6, 2006. LIBERTY BANCORP, INC. By: /s/ Brent M. Giles ------------------------------------ Brent M. Giles President, Chief Executive Officer and Director (duly authorized representative) In accordance with the requirements of the Securities Act of 1933, this registration statement was signed by the following persons in the capacities and on the dates stated. Name Title Date - ---- ----- ---- /s/ Brent M. Giles President, Chief Executive Officer September 6, 2006 - ----------------------- and Director Brent M. Giles (principal executive officer) /s/ Marc J. Weishaar - ----------------------- Senior Vice President and Marc J. Weishaar Chief Financial Officer September 6, 2006 (principal accounting and financial officer) * - ----------------------- Chairman of the Board Daniel G. O'Dell * - ----------------------- Director Ralph W. Brant, Jr. * - ----------------------- Director Steven K. Havens * - ----------------------- Director Robert T. Sevier * - ----------------------- Director Marvin J. Weishaar *Pursuant to the Powers of Attorney filed as Exhibit 24.0 to the Registration Statement on Form SB-2 for Liberty Bancorp, Inc. filed on March 3, 2006. /s/ Brent M. Giles - ----------------------- September 6, 2006 Brent M. Giles