UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 10-Q/A [ X ] Quarterly report pursuant to section 13 or 15(d) of the Securities Exchange Act of 1934 for the quarterly period ended June 30, 1998 or [ ] Transition report pursuant to section 13 or 15(d) of the Securities Exchange Act of 1934 for the transition period from _____ to _____ Commission File Number 1-13051 MARKEL CORPORATION (Exact name of registrant as specified in its charter) Virginia 54-0292420 (State or other jurisdiction of (I.R.S. employer incorporation or organization) identification number) 4551 Cox Road, Glen Allen, Virginia 23060-3382 (Address of principal executive offices) (Zip code) (804) 747-0136 (Registrant's telephone number, including area code) NONE (Former name, former address and former fiscal year, if changed since last report) Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes [ X ] No [ ] Number of shares of the registrant's common stock outstanding at July 28, 1998: 5,503,212 1 Markel Corporation Form 10-Q/A Index Page Number PART II. OTHER INFORMATION: Item 6. Exhibits and Reports on Form 8-K 3 2 PART II. OTHER INFORMATION Item 6. Exhibits and Reports on Form 8-K (a) Exhibits. The Exhibits to this Report are listed in the Exhibit Index. (b) No reports on Form 8-K were filed during the quarter ended June 30, 1998 3 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, thereunto duly authorized, this 13th day of August, 1998. Markel Corporation By Darrell D. Martin ------------------------------------- Darrell D. Martin Executive Vice President and Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer) 4 Exhibit Index Number Description 27.1 Restated Financial Data Schedules for periods in 1997 * 27.2 Restated Financial Data Schedules for periods in 1996 * 27.3 Restated Financial Data Schedules for periods in 1995 * * Filed electronically with the Commission's operational EDGAR system. This amendment is being made to restate prior period Financial Data Schedules to reflect the adoption of Statement of Financial Accounting Standards No. 128. 5