Statement of Changes in Beneficial Ownership (4)

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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3235-0287

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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 * BROCKBANK MARK ELLWOOD	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		38301	A	(1)	95765	D
Common Stock	12/1/2021		D		38301	D	$77.73	57464	D
Common Stock								827659	I	By corporation

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			38301	12/1/2021	12/1/2021	Common Stock	38301	(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
BROCKBANK MARK ELLWOOD W. R. BERKLEY CORPORATION 475 STEAMBOAT ROAD GREENWICH, CT 06830	X

Signatures
Mark E. Brockbank		12/3/2021
**Signature of Reporting Person		Date