Form 4 for WRB W. R. Berkley Corporation
Accepted 2026-02-27 00:00:00 ET · period of report 2026-02-26 · accession 0001193125-26-083630 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MT | 2026-02-27 | 2026-02-26+ | WRB | MITSUI SUMITOMO INSURANCE CO LTD | 10% | P - Purchase | $71.65 | +300.0K | 58.52M | +0.5% | +$21.50M |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-02-26 | P | A | 145,491 | $71.65 | 58,367,765 | D | — | — | (F2) The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $71.3483 to $71.9977. The Reporting Persons undertake to provide to W.R. Berkley Corporation (the "Issuer"), any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote and in footnotes 4 and 5. (F3) The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. |
| 2 | Common | Common Stock | 2026-02-26 | P | A | 7,509 | $72.11 | 58,375,274 | D | — | — | (F4) The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $72.00 to $72.39. (F3) The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. |
| 3 | Common | Common Stock | 2026-02-27 | P | A | 147,000 | $71.63 | 58,522,274 | D | — | — | (F5) The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $71.065 to $72.035. (F3) The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. |