================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F Form 13F COVER PAGE Report for the Calendar Year or Quarter: December 31, 2011 Check here if Amendment [_]; Amendment Number: ________________________________ This Amendment (Check only one.): [_] is a restatement. [_] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: Markel Corporation Address: 4521 Highwoods Pkwy Glen Allen, VA 23060 Form 13F File Number: 28-6647 The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Name: Thomas S. Gayner Title: President and Chief Investment Officer Phone: 804-527-3806 Signature, Place, and Date of Signing: /s/ Thomas S. Gayner Richmond, VA 02/13/2012 ---------------------- -------------- ----------- [Signature] [City, State] [Date] Report Type (Check only one.): [X] 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.) [_] 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).) [_]13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).) ================================================================================ Form 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 1 Form 13F Information Table Entry Total: 127 Form 13F Information Table Value Total: $1,895,524 (thousands) List of Other Included Managers: Provide a numbered list of the name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report. No. Form 13F File Number Name --- -------------------- ---- 1 28-6056 Markel Gayner Asset Management Corporation FORM 13F INFORMATION TABLE VALUE SHARES/ SH/ PUT/ INVSTMT OTHER VOTING AUTHORITY NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DSCRETN MANAGERS SOLE SHARED NONE ------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- -------- 3M Company COM 88579y101 2452 30000 SH SOLE 30000 12840 157100 SH DEFINED 01 154000 3100 Abbott Laboratories COM 002824100 5061 90000 SH DEFINED 01 89000 1000 Accenture COM G1151C101 532 10000 SH SOLE 10000 5855 110000 SH DEFINED 01 100000 10000 Air Products & Chemicals COM 009158106 409 4800 SH DEFINED 01 4800 Alleghany Corporation COM 017175100 1235 4328 SH SOLE 4328 Altria COM 02209S103 3481 117400 SH DEFINED 01 114500 2900 American Express COM 025816109 472 10000 SH SOLE 10000 17811 377595 SH DEFINED 01 339000 38595 Anheuser-Busch Inbev ADR COM 03524A108 24689 404801 SH DEFINED 01 390000 14801 Automatic Data Processing COM 053015103 27102 501800 SH DEFINED 01 489700 12100 Bank of New York Mellon Corp COM 064058100 60 3019 SH SOLE 3019 4642 233130 SH DEFINED 01 214907 18223 Berkshire Hathaway Class B COM 084670702 37013 485100 SH SOLE 485100 83186 1090247 SH DEFINED 01 1026507 63740 Berkshire Hathaway, Inc. 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