SRB CORP 4

What Happened
SRB Corporation (a direct, wholly‑owned subsidiary of The Plymouth Rock Company, a 10% owner) sold a total of 13,634 shares of Safety Insurance Group, Inc. (SAFT) in open‑market dispositions on Feb 25–26, 2026. The three trades were: 2,147 shares @ $78.29 (≈ $168,089), 5,280 shares @ $78.91 (≈ $416,637), and 6,207 shares @ $77.89 (≈ $483,470), for aggregate proceeds of about $1,068,196. These were sales (dispositions), not purchases—routine institutional selling rather than an insider purchase signal.

Key Details

• Transaction dates and prices:
  • 2026-02-25: 2,147 shares @ $78.29 = $168,089
  • 2026-02-26: 5,280 shares @ $78.91 = $416,637
  • 2026-02-26: 6,207 shares @ $77.89 = $483,470
• Total sold: 13,634 shares for ≈ $1.07M in proceeds.
• Filing: Form 4 filed 2026-02-27 for report period 2026-02-25 (appears timely).
• Shares owned after transaction: The Form 4 discloses aggregated holdings among the reporting persons totaling about 1,821,510 shares (held across PRC and its subsidiaries and affiliated entities) — see the Form 4 for full holdings detail.
• Notable footnotes: This Form 4 is a joint filing by SRB Corporation and The Plymouth Rock Company, Inc.; SRB acts as investment manager and disclaims beneficial ownership, and PRC disclaims beneficial ownership except to the extent of any pecuniary interest. The reporting persons note they “may be deemed” a group but expressly disclaim that a group exists for other purposes.

Context
These sales are institutional dispositions by a 10% owner and affiliated entities, not executive trading. Such sales can be routine portfolio management or rebalancing and do not, by themselves, indicate management sentiment. For full legal context and exact post‑transaction beneficial ownership, consult the complete Form 4 (Accession: 0000904454-26-000132).