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 * SHAPIRO MARK L 2. Issuer Name and Ticker or Trading Symbol BERKLEY W R CORP [ WRB ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)__X__ Director                    _____ 10% Owner
_____ Officer (give title below)    _____ Other (specify below)
(Last)         (First)         (Middle)
W. R. BERKLEY CORPORATION, 475 STEAMBOAT ROAD
3. Date of Earliest Transaction (MM/DD/YYYY)
12/1/2021
(Street)
GREENWICH, CT 06830
(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  12/1/2021    M    5768  A  (1) 5768  D   
Common Stock  12/1/2021    D    5768  D $77.73  0  D   
Common Stock                 90964  I  By Trust 

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
Phantom Stock   (1) 12/1/2021    M        5768   12/1/2021  12/1/2021  Common Stock  5768   (1) 0  D   

Explanation of Responses:
(1)  Each share of phantom stock was deemed invested in one share of W. R. Berkley Corporation (the "Company") common stock pursuant to the terms of the Company's Deferred Compensation Plan for Directors (the "Plan"). In connection with the amendment and restatement of the Plan and the transfer of its administration, the reporting person's shares of phantom stock were settled for cash as of December 1, 2021.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
SHAPIRO MARK L
W. R. BERKLEY CORPORATION
475 STEAMBOAT ROAD
GREENWICH, CT 06830
X



Signatures
Mark L. Shapiro 12/3/2021
**Signature of Reporting Person Date
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