MITSUI SUMITOMO INSURANCE CO LTD 4
4 · BERKLEY W R CORP · Filed Feb 4, 2026
Research Summary
AI-generated summary of this filing
WR Berkley (WRB) 10% Owner Mitsui Sumitomo Buys 315,221 Shares
What Happened
Mitsui Sumitomo Insurance Co., Ltd. (a reported 10% owner) purchased a total of 315,221 shares of W.R. Berkley Corporation (WRB) in open‑market transactions between Feb 2 and Feb 4, 2026. Transactions reported (shares @ price = total):
- Feb 2: 237,062 @ $67.71 = $16,051,136
- Feb 2: 13,159 @ $68.42 = $900,301
- Feb 3: 8,347 @ $67.75 = $565,498
- Feb 3: 31,653 @ $68.87 = $2,179,904
- Feb 4: 2,585 @ $69.77 = $180,343
- Feb 4: 22,415 @ $70.25 = $1,574,717
Aggregate value ≈ $21.45 million. These were purchases (a bullish capital allocation signal from this institutional holder), executed pursuant to a Rule 10b5‑1 plan.
Key Details
- Transaction dates: Feb 2–4, 2026. Form filed: Feb 4, 2026 (appears timely).
- Purchase method/code: P = open market/private purchases under a 10b5‑1 plan (adopted Oct 3, 2025).
- Prices: reported as weighted averages; ranges cited in the filing:
- Feb 2 lots: $67.43–$67.9942 (F2, F4) and $68.0009–$68.7067 (F5)
- Feb 3 lots: $68.40–$69.37 (F6)
- Feb 4 lots: $69.4645–$69.995 (F7) and $70.00–$70.63 (F8)
(The filing offers to provide per‑trade price breakdowns on request.)
- Shares acquired: 315,221 total. Aggregate cash spent ≈ $21.45M.
- Shares owned after transaction: Not specified in the provided excerpt of the Form 4.
- Beneficial ownership note: Shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. (MSI). MSI is a wholly‑owned subsidiary of MS&AD Insurance Group Holdings, Inc.; MS&AD may be deemed to beneficially own these securities but expressly disclaims beneficial ownership except for any pecuniary interest (footnote F3).
- Other remarks: Filing references agreements with WR Berkley & Others LLC (WRBO) and disclaims that MSI and WRBO form a “group” under Rule 13d‑5.
Context
- These are institutional purchases by a 10% owner under a pre‑arranged 10b5‑1 plan, not insider executive trades. For retail investors, purchases by large institutional holders can signal portfolio allocation decisions but do not carry the same interpretive weight as direct executive buys.
- The 10b5‑1 plan means trades were pre‑scheduled, which can reduce the appearance of opportunistic timing.
- Filing appears timely (filed Feb 4 for transactions through Feb 4); no late‑filing indication in the provided data.
Insider Transaction Report
Form 4
MITSUI SUMITOMO INSURANCE CO LTD
10% Owner
Transactions
- Purchase
Common Stock
[F1][F2][F3]2026-02-02$67.71/sh+237,062$16,051,136→ 56,340,497 total - Purchase
Common Stock
[F1][F4][F3]2026-02-02$68.42/sh+13,159$900,301→ 56,353,656 total - Purchase
Common Stock
[F1][F5][F3]2026-02-03$67.75/sh+8,347$565,498→ 56,362,003 total - Purchase
Common Stock
[F1][F6][F3]2026-02-03$68.87/sh+31,653$2,179,904→ 56,393,656 total - Purchase
Common Stock
[F1][F7][F3]2026-02-04$69.77/sh+2,585$180,343→ 56,396,241 total - Purchase
Common Stock
[F1][F8][F3]2026-02-04$70.25/sh+22,415$1,574,717→ 56,418,656 total
Footnotes (8)
- [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 $67.43 to $67.9942. 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 and 8.
- [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 $67.43 to $67.9942.
- [F5]The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.0009 to $68.7067.
- [F6]The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.40 to $69.37.
- [F7]The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $69.4645 to $69.995.
- [F8]The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $70.00 to $70.63.