BERKLEY W R CORP 4

EVP & Secretary Philip S. Welt received 14,086 shares of W. R. Berkley common stock from RSU vesting and had 592 shares withheld for taxes.

On August 3, 2026, Philip S. Welt, EVP & Secretary of W. R. Berkley Corporation, had 14,086 performance-based RSUs vest into common stock pursuant to prior grants made in 2021, 2022, and 2023 under the 2018 Stock Incentive Plan for a three-year performance period ending June 30, 2026. In connection with this vesting, 592 shares were withheld at an implied price of $72.2875 per share to satisfy tax obligations, a non-open-market transaction that effectively reduces the net shares delivered. After these transactions, Welt directly owned 214,033 shares of common stock, and indirectly held an additional 25,139 shares through an employee stock purchase plan (ESPP), bringing his total beneficial ownership to roughly 239,172 shares, including 139,750 vested but deferred RSU-based shares, with an aggregate post-transaction economic exposure of about $17.2 million based on the current stock price.

Filing Facts

CIK

11544

Ticker

WRB

Form

4

Source Type

sec

Accession

0000011544-26-000044

Alert Tier

5