<Page> SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K/A AMENDMENT NO. 1 CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report DECEMBER 20, 2001 (Date of earliest event reported) OCTOBER 9, 2001 LANDMARK BANCORP, INC. (F/K/A LANDMARK MERGER COMPANY) (Exact name of Registrant as specified in its charter) DELAWARE (State or other jurisdiction of incorporation) 62466 43-1930755 (Commission File Number) (I.R.S. Employer Identification Number) 800 POYNTZ AVENUE, MANHATTAN, KANSAS 66502 (Address of principal executive offices) (Zip Code) (785) 565-2000 (Registrant's telephone number, including area code) <Page> Landmark Bancorp, Inc., a Delaware corporation (the "Registrant"), hereby amends Item 7 of its Current Report on Form 8-K, originally filed with the Securities and Exchange Commission on October 12, 2001, as set forth in the pages attached hereto. In the initial Form 8-K, the Registrant disclosed the merger transaction whereby MNB Bancshares, Inc. ("MNB") and Landmark Bancshares, Inc. ("LBI") merged with and into the Registrant. ITEM 7. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS (a) FINANCIAL STATEMENTS OF BUSINESS ACQUIRED. 1. MNB's consolidated financial statements for the three fiscal years ended December 31, 2000 are included in Exhibit 99.1 attached hereto and incorporated herein. 2. MNB's unaudited consolidated balance sheet and statements of income and cash flow for the six month periods ended June 30, 2001 and 2000 are included in Exhibit 99.2 attached hereto and incorporated herein. 3. LBI's consolidated financial statements for the three fiscal years ended September 30, 2000 are included in Exhibit 99.3 attached hereto and incorporated herein. 4. LBI's unaudited consolidated balance sheet and statements of income and cash flow for the nine month periods ended June 30, 2001 and 2000 are included in Exhibit 99.4 attached hereto and incorporated herein. (b) PRO FORMA FINANCIAL INFORMATION. The unaudited pro forma combined financial information gives effect to the merger of MNB and LBI with and into Registrant in accordance with generally accepted accounting principles and is included in Exhibit 99.5 attached hereto and incorporated herein. The unaudited pro forma financial information is based upon the historical financial statements of the respective companies. (c) EXHIBITS. 23.1 Consent of Regier Carr & Monroe, L.L.P. 23.2 Consent of KPMG LLP 99.1 MNB consolidated financial statements for the three fiscal years ended December 31, 2000. 99.2 MNB unaudited consolidated balance sheet and statements of income and cash flow for the six month periods ended June 30, 2001 and 2000. 99.3 LBI consolidated financial statements for the three fiscal years ended September 30, 2000. <Page> 99.4 LBI unaudited consolidated balance sheet and statements of income and cash flow for the nine month periods ended June 30, 2001 and 2000. 99.5 Unaudited pro forma financial information for the Registrant giving effect to the merger transaction previously reported on the initial Form 8-K. SIGNATURES 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. LANDMARK BANCORP, INC. Dated: December 20, 2001 By: /s/ Mark A Herpich ---------------------------------- Mark A. Herpich Vice President, Secretary, Treasurer and Chief Financial Officer 2