1 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): March 17, 1998 MEDUSA CORPORATION (Exact name of registrant as specified in its charter) OHIO 1-1274-2 34-0394630 (State or other jurisdiction of (Commission file number) (IRS employer identification no.) incorporation) 3008 MONTICELLO BOULEVARD 44118-1308 CLEVELAND HEIGHTS, OHIO (Address of principal executive (Zip code) offices) Registrant's telephone number, including area code: (216) 371-4000 2 ITEM 1. CHANGE IN CONTROL OF REGISTRANT. On March 18, 1998, Medusa Corporation issued a press release, a copy of which is filed as Exhibit 99.1 hereto and incorporated herein by this reference. The definitive agreement referred to in such press release is filed as Exhibit 2.1 hereto. -2- 3 ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS. (c) Exhibits. The following material is filed as an exhibit to this Current Report on Form 8-K: Exhibit Number Description of Exhibit - ------ ---------------------- 2.1 Agreement and Plan of Merger dated as of March 17, 1998 between Medusa Corporation, Bedrock Merger Corp., and Southdown, Inc. 99.1 Press Release dated March 18, 1998 -3- 4 SIGNATURE 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 thereunto duly authorized. MEDUSA CORPORATION By: /s/ ROBERT D. VILSACK ----------------------------- Robert D. Vilsack Title: Vice President, Secretary and General Counsel Dated: March 18, 1998 5 EXHIBIT INDEX Exhibit Number Description - ------ ----------- 2.1 Agreement and Plan of Merger dated as of March 17, 1998 between Medusa Corporation, Bedrock Merger Corp., and Southdown, Inc. 99.1 Press Release dated March 18, 1998