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W.R. Berkley

XNYS · FIRE, MARINE & CASUALTY INSURANCE

2 articles20 insider tx0 holders0 supply chain0 selling intent filings1 new insider

Research articles

Includes notes from domestic 8-K and foreign private issuer 6-K disclosures.

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Recent insider activity

Insider net $ (monthly)open-market Form 4 only - grants, exercises, tax withholding excluded$1$1$0-$1-$12024-10 $02024-11 $02024-12 $02025-01 $02025-02 $02025-03 $02025-04 $02025-05 $02025-06 $02025-07 $02025-08 $02025-09 $02025-10 $02025-11 $02025-12 $02026-01 $02026-02 $02026-03 $02026-04 $02026-05 $02026-06 $02026-07 $02026-08 $02026-09 $0Oct 24Dec 24Feb 25Apr 25Jun 25Aug 25Oct 25Dec 25Feb 26Apr 26Jun 26Aug 26~ derived from SEC-reported shares x price. Hatched: excluded (implausible price) or unpriced.

open-market Form 4 only - grants, exercises, tax withholding excluded

0 buyers - 0 unique sellers · Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.

Date Insider Title Type Shares Price Value
August 3, 2026 Welt Philip S EVP & Secretary GRANT 14,086 — —
August 3, 2026 Welt Philip S EVP & Secretary TAX_WITHHOLD -592 $72 ~$43K
August 3, 2026 Baio Richard Mark EVP & CFO GRANT 14,086 — —
August 3, 2026 Baio Richard Mark EVP & CFO TAX_WITHHOLD -650 $72 ~$47K
August 3, 2026 Berkley William R Jr Chairman, President and CEO GRANT 98,593 — —
August 3, 2026 Berkley William R Jr Chairman, President and CEO TAX_WITHHOLD -4,139 $72 ~$0.3M
August 3, 2026 Shiel James G EVP - Investments GRANT 14,086 — —
August 3, 2026 Shiel James G EVP - Investments TAX_WITHHOLD -650 $72 ~$47K
June 3, 2026 Talisman Jonathan — GRANT 3,090 — —
June 3, 2026 Berkley William R Executive Chairman GRANT 3,090 — —
June 3, 2026 Ferre Maria Luisa — GRANT 3,090 — —
June 3, 2026 Mattson Marie Angela — GRANT 3,090 — —
June 3, 2026 Berkley William R Jr President and CEO GRANT 3,090 — —
June 3, 2026 Mosley Daniel Lynn — GRANT 3,090 — —
June 3, 2026 Farrell Mary C — GRANT 3,090 — —
June 3, 2026 Rusbuldt Robert Alan — GRANT 3,090 — —
June 3, 2026 Augostini Christopher L — GRANT 3,090 — —
June 3, 2026 Blaylock Ronald E — GRANT 3,090 — —
March 3, 2026 Mitsui Sumitomo Insurance Co Ltd — BUY 38,991 $72 ~$2.8M
March 3, 2026 Mitsui Sumitomo Insurance Co Ltd — BUY 73,185 $73 ~$5.3M

New Insiders (Form 3)

Date Insider Title Relationship Shares Filing
June 4, 2026 — — — — SEC
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