William R. Berkley Jr. - 15 Aug 2025 Form 4 Insider Report for BERKLEY W R CORP (WRB)

Role: President and CEO, Director
Signature: William R. Berkley, Jr.
Issuer symbol: WRB
Transactions as of: 15 Aug 2025
Net transactions value: -$334,520
Form type: 4
Filing time: 19 Aug 2025, 18:29:54 UTC
Previous filing: 13 Jun 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
BERKLEY WILLIAM R JR	President and CEO, Director	W. R. BERKLEY CORPORATION, 475 STEAMBOAT ROAD, GREENWICH	William R. Berkley, Jr.	19 Aug 2025	0001236253

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WRB	Common Stock	Award	$0	+111,869	+2.5%	$0.000000	4,557,466	15 Aug 2025	Direct	F1
transaction	WRB	Common Stock	Tax liability	$334,520	-4,696	-0.1%	$71.24	4,552,770	15 Aug 2025	Direct	F2, F3
holding	WRB	Common Stock						67,069,033	15 Aug 2025	By WR Berkley & Others LLC	F4
holding	WRB	Common Stock						1,350,000	15 Aug 2025	By William R. Berkley 2011 GST Trust

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents the vesting of tranches of performance-based restricted stock units ("RSUs") granted in 2020, 2021 and 2022 under the W. R. Berkley Corporation 2018 Stock Incentive Plan for the three-year performance period ending June 30, 2025 (consisting of 43,765 shares; 38,840 shares; and 29,264 shares, respectively).
F2	Represents payment of tax liability by withholding securities incident to the vesting of RSUs.
F3	Includes 3,181,240 shares of common stock underlying RSUs, all of which have vested (the receipt of which has been deferred) and does not include unvested shares of common stock underlying performance-based RSUs.
F4	Mr. William R. Berkley and the reporting person are the majority beneficial owners of the limited liability company which is included on Mr. William R. Berkley's Form 4 dated August 19, 2025.