MITSUI SUMITOMO INSURANCE CO LTD 4
4 · BERKLEY W R CORP · Filed Feb 11, 2026
Research Summary
AI-generated summary of this filing
W.R. Berkley (WRB): Mitsui Sumitomo (10% Owner) Buys Shares
What Happened
Mitsui Sumitomo Insurance Co., Ltd. (MSI), a reported 10% owner of W.R. Berkley Corporation (WRB), purchased a total of 97,996 WRB shares in multiple open‑market transactions from Feb 9–11, 2026. The purchases were effected under a Rule 10b5‑1 trading plan adopted Oct 3, 2025. Transaction details:
- 2026-02-09 — 35,952 shares @ $69.27 each = $2,490,553 (weighted avg; multiple executions)
- 2026-02-09 — 4,048 shares @ $70.32 each = $284,653 (weighted avg)
- 2026-02-10 — 21,884 shares @ $69.09 each = $1,511,904 (weighted avg)
- 2026-02-10 — 12,082 shares @ $69.92 each = $844,787 (weighted avg)
- 2026-02-11 — 9,289 shares @ $69.59 each = $646,400 (weighted avg)
- 2026-02-11 — 3,578 shares @ $70.50 each = $252,266 (weighted avg)
- 2026-02-11 — 11,163 shares @ $71.45 each = $797,589 (weighted avg)
Total purchased: 97,996 shares for approximately $6.83 million. Purchases are generally viewed as a positive signal (institutional buying) but do not on their own prove intent.
Key Details
- Dates: Feb 9–11, 2026 (Form filed Feb 11, 2026; appears timely).
- Price info: Reported prices are weighted averages; execution price ranges per footnotes:
- 02/09 (35,952): $69.0015–$69.9972
- 02/09 (4,048): $70.0059–$70.925
- 02/10 (21,884): $68.53–$69.505
- 02/10 (12,082): $69.5057–$70.185
- 02/11 (9,289): $69.28–$69.9981
- 02/11 (3,578): $70.00–$70.9925
- 02/11 (11,163): $71.0043–$71.635
- Shares owned after transaction: not specified in the provided Form 4 excerpt.
- Notable footnotes: purchases were made under a 10b5‑1 plan (F1); MSI holds the shares directly but is a wholly‑owned subsidiary of MS&AD (F3) — MS&AD may be deemed to beneficially own them but disclaims such ownership except for pecuniary interest; weighted‑average pricing and execution ranges described in footnotes (F2–F9).
- Remarks: MSI, the issuer and WR Berkley & Others LLC have certain agreements (see Schedule 13D); MSI disclaims group status with WRBO.
Context
- This is institutional buying by a reported 10% owner, not an executive/officer trade — different implications than insider executive activity.
- The 10b5‑1 plan means trades were pre‑scheduled, which can reduce the likelihood trades were timed on inside information but still represent material purchases by a large holder.
- No options, awards, gifts, or tax‑withholding events are reported in this filing.
Insider Transaction Report
Form 4
MITSUI SUMITOMO INSURANCE CO LTD
10% Owner
Transactions
- Purchase
Common Stock
[F1][F2][F3]2026-02-09$69.27/sh+35,952$2,490,553→ 56,494,608 total - Purchase
Common Stock
[F1][F4][F3]2026-02-09$70.32/sh+4,048$284,653→ 56,498,656 total - Purchase
Common Stock
[F1][F5][F3]2026-02-10$69.09/sh+21,884$1,511,904→ 56,520,540 total - Purchase
Common Stock
[F1][F6][F3]2026-02-10$69.92/sh+12,082$844,787→ 56,532,622 total - Purchase
Common Stock
[F1][F7][F3]2026-02-11$69.59/sh+9,289$646,400→ 56,541,911 total - Purchase
Common Stock
[F1][F8][F3]2026-02-11$70.50/sh+3,578$252,266→ 56,545,489 total - Purchase
Common Stock
[F1][F9][F3]2026-02-11$71.45/sh+11,163$797,589→ 56,556,652 total
Footnotes (9)
- [F1]The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025.
- [F2]The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $69.0015 to $69.9972. 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, 5, 6, 7, 8 and 9.
- [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.
- [F4]The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $70.0059 to $70.925.
- [F5]The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.53 to $69.505.
- [F6]The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $69.5057 to $70.185.
- [F7]The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $69.28 to $69.9981.
- [F8]The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $70.00 to $70.9925.
- [F9]The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $71.0043 to $71.635.