William R. Berkley - 05 Dec 2025 SCHEDULE 13D Report for W. R. BERKLEY CORPORATION Common Stock, par value $0.20 per share (WRB)

Filing Manager
William R. Berkley
Reporting Manager
WR Berkley & Others LLC
Security
W. R. BERKLEY CORPORATION Common Stock, par value $0.20 per share
Symbol
WRB
Shares outstanding
380,076,150 shares
Disclosed Ownership
95,551,144 shares
Ownership
25%
Form type
SCHEDULE 13D
Filing time
11 Dec 2025, 21:49:13 UTC
Date of event
05 Dec 2025
Next filing
05 Mar 2026
SEC
View on sec.gov

Quoteable Key Fact

"William R. Berkley disclosed 25% ownership in W. R. BERKLEY CORPORATION Common Stock, par value $0.20 per share (WRB) on 05 Dec 2025."

Quick Takeaways

  • William R. Berkley filed SCHEDULE 13D for W. R. BERKLEY CORPORATION Common Stock, par value $0.20 per share (WRB).
  • Disclosed ownership: 25%.
  • Date of event: 05 Dec 2025.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 11 Dec 2025, 21:49.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Source Evidence

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (8)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
WR Berkley & Others LLC 25% 95,551,144 63,515,547 32,035,597 /s/ W. Robert Berkley, Jr. W. Robert Berkley, Jr. /Manager 0000918186
WR Berkley & Others 2 LLC 25% 95,551,144 3,553,486 91,997,658 /s/ W. Robert Berkley, Jr. W. Robert Berkley, Jr. / Manager
William R. Berkley 25% 95,551,144 17,363,285 78,187,859 /s/ William R. Berkley William R. Berkley
Marjorie J. Berkley 25% 95,551,144 204,364 95,346,780 /s/ Marjorie J. Berkley Marjorie J. Berkley
W. Robert Berkley, Jr. 25% 95,551,144 4,552,770 90,998,374 /s/ W. Robert Berkley, Jr. W. Robert Berkley, Jr.
The William R. Berkley 2011 GST Trust u/a dated December 20, 2011 25% 95,551,144 1,350,000 94,201,144 /s/ W. Robert Berkley, Jr. W. Robert Berkley, Jr. /Trustee
The William R. Berkley 2022 Family Trust f/b/o William R. Berkley, Jr. and His Issue 25% 95,551,144 4,287,201 91,263,943 /s/ Marjorie J. Berkley Marjorie J. Berkley/Trustee
The William R. Berkley 2022 Family Trust f/b/o Lauren Berkley and Her Issue 25% 95,551,144 724,491 94,826,653 /s/ Marjorie J. Berkley Marjorie J. Berkley/Trustee