Berkley W R Corp insiders: what they own and what they did with it

Outside holder, reported separately: MITSUI SUMITOMO INSURANCE CO LTD (a 10% owner, not part of management). No open-market sales reported in the period. Holds 58.78M shares. Latest filing

Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.

11 of 15 insiders fully reconciled: starting holdings plus reported transactions match ending holdings (11 exactly, 0 with a minor or footnoted difference). For 4 we show sales but not holdings; the ! icon on their rows explains why. Percentages cover 9 of 15 officers and directors. Left out: William Berkley, William Berkley Jr., Philip Welt and Richard Baio (holdings couldn't be fully reconciled); Maria Ferre (most holdings were last confirmed in 2017); Andrew Carrier (held no vested shares at the start). "Still held" compares ending with starting vested shares; a plus sign means the holding grew.

Less than usual: no sales, against a 5-year average of 11K shares a year. 0 insiders sold; the average is 0 a year.

Open-market sales (Form 4 code S) by people who were officers or directors, in split-adjusted shares. Earlier years include people who have since left. A sale that an outside holder also reports (a family trust, a fund) is counted with outside holders in every year. Shares, not dollars, are compared, so a change in the stock price doesn't look like a change in selling. Years the filings don't fully cover are shown but left out of the average.

All 687 Forms 3, 4 and 5 filed for Berkley W R Corp (SEC CIK 11544) from Aug 21, 2003 to Aug 5, 2026, retrieved from SEC EDGAR on Oct 8, 2026. Prices are the ones reported in each filing, often weighted averages. 25 filings were left out because Berkley W R Corp filed them as an owner of another company's stock.

Probable 3-for-2 stock split on or before Apr 8, 2005 (split date stated in a footnote). Splits aren't reported as transactions; 20 holding lines changed by exactly this ratio, so earlier share counts are restated.

Probable 3-for-2 stock split on or before Apr 4, 2006 (split date stated in a footnote). Splits aren't reported as transactions; 22 holding lines changed by exactly this ratio, so earlier share counts are restated.

Probable 3-for-2 stock split on or before Apr 2, 2019 (split date stated in a footnote). Splits aren't reported as transactions; 19 holding lines changed by exactly this ratio, so earlier share counts are restated.

Probable 3-for-2 stock split on or before Mar 23, 2022 (split date stated in a footnote). Splits aren't reported as transactions; 19 holding lines changed by exactly this ratio, so earlier share counts are restated.

Probable 3-for-2 stock split on or before Jul 10, 2024 (split date stated in a footnote). Splits aren't reported as transactions; 21 holding lines changed by exactly this ratio, so earlier share counts are restated.

Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.

Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".

Full methodology