MITSUI SUMITOMO INSURANCE CO LTD 4

What Happened

• Mitsui Sumitomo Insurance Co., Ltd. (a reported 10% owner) purchased a total of 566,386 shares of W. R. Berkley Corporation (WRB) in open-market/private purchases on Feb 17–18, 2026. The three reported buys were: 281,386 shares at a weighted average $71.19 ($20.03M), 239,750 shares at $70.58 ($16.92M), and 45,250 shares at $70.96 (~$3.21M), for a combined cost of about $40.17 million. These are purchases (a bullish signal in isolation), executed under a pre-established Rule 10b5-1 plan.

Key Details

• Transaction dates and reported amounts:
  • 2026-02-17: 281,386 shares @ $71.19 (weighted avg; range $70.595–$71.573) — $20,032,854
  • 2026-02-18: 239,750 shares @ $70.58 (weighted avg; range $69.9646–$70.90) — $16,922,730
  • 2026-02-18: 45,250 shares @ $70.96 (weighted avg; range $70.9003–$71.435) — $3,210,908
• Total: 566,386 shares purchased for ~$40,166,492.
• Shares owned after the transactions: not specified in the provided filing excerpt.
• Notable footnotes:
  • Purchases were effected pursuant to a Rule 10b5-1 purchase plan adopted Oct 3, 2025 (F1).
  • Reported prices are weighted averages across multiple trades; per-footnote price ranges are provided (F2–F5).
  • Shares are held directly by MSI; MS&AD (the parent) may be deemed to beneficially own them but disclaims ownership except for pecuniary interest (F3).
  • Remarks reference prior agreements and a Schedule 13D filing and disclaimers regarding WR Berkley & Others LLC.
• Timeliness: Filing dated Feb 18, 2026 covering transactions through Feb 17, 2026—appears filed promptly.

Context

• This filing reflects institutional purchasing by a 10% shareholder, not executive insider trading. The 10b5-1 plan means trades were made under a pre-set program and may not reflect contemporaneous changes in view. Institutional purchases can be informative to investors but do not guarantee future stock performance.