FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                       
1. Name and Address of Reporting Person * Heaton Michael R 2. Issuer Name and Ticker or Trading Symbol MARKEL CORP [ MKL ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)_____ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
President, Markel Ventures
(Last)         (First)         (Middle)
C/O MARKEL CORPORATION, 4521 HIGHWOODS PARKWAY		 3. Date of Earliest Transaction (MM/DD/YYYY)
12/8/2020
(Street)
GLEN ALLEN, VA 23060
(City)       (State)       (Zip)
 4. If Amendment, Date Original Filed (MM/DD/YYYY)
 
 6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock  12/8/2020    F    69  D $1000.03  1512.1676  D   
Common Stock                 126.888  I  401(K) Plan (1)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Explanation of Responses:
(1)  Holdings under the Markel Corporation 401(K) Plan are reported in units. The information reported herein is dated as of September 30, 2020 and utilizes the most recent closing stock price on that date of $973.70 per share. As of September 30, 2020, a unit under the Plan represented one share of Common Stock.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Heaton Michael R
C/O MARKEL CORPORATION
4521 HIGHWOODS PARKWAY
GLEN ALLEN, VA 23060

President, Markel Ventures

Signatures
/s/ Brian D. Sorkin, Attorney-in-fact for Michael R. Heaton 12/10/2020
**Signature of Reporting Person Date