SRB CORP 4

What Happened
SRB Corporation (a direct, wholly‑owned subsidiary of The Plymouth Rock Company Incorporated and a reported 10% owner) sold a total of 11,505 shares of Safety Insurance Group, Inc. (SAFT) in two open‑market transactions. On 2026-02-27 SRB sold 235 shares at $77.82 each (≈ $18,288), and on 2026-03-02 it sold 11,270 shares at $76.49 each (≈ $862,042). Total proceeds from these sales were about $880,330. These were outright sales (transaction code S), not purchases or option exercises.

Key Details

• Transaction dates and prices:
  • 2026-02-27: 235 shares @ $77.82 — $18,288
  • 2026-03-02: 11,270 shares @ $76.49 — $862,042
• Total shares sold: 11,505; total proceeds ≈ $880,330.
• Shares owned after transaction: Not specified in the provided filing excerpt.
• Filing: Form 4 filed 2026-03-03 reporting the above trades; timing appears to be within the required two business days for these transactions (timely).
• Footnotes (high level): Filing is a joint report by SRB Corporation and The Plymouth Rock Company Incorporated (PRC). SRB is a subsidiary and acts as investment manager to PRC and disclaims beneficial ownership; PRC and multiple subsidiaries/managed entities are referenced as holding shares in the aggregate. The filing includes standard disclaimers about beneficial ownership.

Context
This filing involves a 10% institutional owner (SRB/PRC group), not an individual executive. Institutional sales like this often reflect portfolio or fund management activity rather than a direct signal about company fundamentals. Sales are factual: purchases tend to be more informative for bullish signals.