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Lucille T. Sgaglione, Executive Vice President of W. R. Berkley Corporation (WRB), reported insider transactions dated 08/15/2025. The filing shows 16,126 shares were acquired representing the vesting of performance-based restricted stock units (RSUs) granted in 2020, 2021 and 2022 for the three-year performance period ending June 30, 2025 (6,396; 5,549; and 4,181 shares respectively). To satisfy tax withholding on the vesting, 717 shares were withheld and disposed at a price of $71.235 per share. After these transactions, Ms. Sgaglione beneficially owned 241,036 shares directly and additionally had 8,748 shares indirectly through the employee stock purchase plan (ESPP). The report reflects routine equity compensation settlement rather than a purchase or sale for investment purposes.

Philip S. Welt, Executive Vice President & Secretary of W. R. Berkley Corporation (WRB), reported insider transactions on 08/15/2025 related to the vesting of performance-based restricted stock units (RSUs) and related tax withholding. A tranche of 16,126 shares was acquired upon vesting at no cash price, and 678 shares were disposed of to satisfy tax withholding at a price of $71.235 per share. Following these transactions, Mr. Welt beneficially owns 201,217 shares of common stock directly and an additional 24,324 shares indirectly through the Employee Stock Purchase Plan (ESPP). The filing notes 126,256 shares underlying RSUs have vested but their receipt has been deferred.

Richard M. Baio, EVP & CFO of W. R. Berkley Corporation (WRB), reported insider transactions dated 08/15/2025. He received 16,126 shares upon vesting of performance-based restricted stock units granted in 2020, 2021 and 2022 covering the three-year performance period ending June 30, 2025. To satisfy tax withholding on the vesting, 744 shares were withheld at a price of $71.235. Following these transactions, reported beneficial ownership figures are 214,919 shares (direct) and 21,415 shares indirect via a 401(k) plan; the filing notes 211,550 shares underlying vested RSUs that have been deferred.

W.R. Berkley insider report: The filing shows that William R. Berkley Jr. had performance-based restricted stock units (RSUs) vest on 08/15/2025, resulting in 111,869 shares issued from grants made in 2020, 2021 and 2022 tied to the three-year performance period ending June 30, 2025. To cover taxes, 4,696 shares were withheld/sold at $71.235, leaving Mr. Berkley Jr. with 4,552,770 shares directly beneficially owned. The filing also reports indirect holdings: 67,069,033 shares held by WR Berkley & Others LLC and 1,350,000 shares held by the 2011 GST Trust, reflecting the reporting person and Mr. William R. Berkley as majority beneficial owners of the LLC.

William R. Berkley, Executive Chairman and director of W. R. Berkley Corporation (WRB), reported transactions dated 08/15/2025 reflecting the vesting of performance-based restricted stock units (RSUs) and a tax-withholding sale. A total of 111,869 shares vested17,367,562 shares before withholding. The company withheld 4,277 shares to satisfy tax obligations at a reported price of $71.235 per share, leaving 17,363,285 shares directly held after the withholding. The filing also discloses substantial indirect holdings: 67,069,033 shares via WR Berkley & Others LLC, 1,350,000 shares via the 2011 GST Trust, and 204,364 shares held by the reporting person’s spouse. The form was signed on 08/19/2025.

W.R. Berkley Corp. (WRB) â€� Form 144 filing: An insider has filed notice to sell up to 53,375 common shares through J.P. Morgan Securities on or about 28 Jul 2025 on the NYSE. The shares carry an aggregate market value of roughly $3.67 million. With 379.36 million shares outstanding, the planned disposition equals only ~0.014 % of total shares, indicating limited dilution or price impact.

• Stock was acquired via equity-compensation grants made annually from 2017-2024.
• No sales have been recorded by this filer during the past three months.
• The filer certifies possession of no undisclosed adverse information.

The Form 144 is a preliminary notice; the trade may or may not be executed, but it signals a modest insider liquidity event that investors may monitor for sentiment cues.