SRB CORP 4
4 · SAFETY INSURANCE GROUP INC · Filed Mar 19, 2026
Research Summary
AI-generated summary of this filing
Safety Insurance (SAFT) 10% Owner SRB Corp Sells 1,199 Shares
What Happened
SRB Corporation (reported as a 10% owner/acting investment manager) sold 1,199 shares of Safety Insurance Group Inc. (SAFT) common stock in an open-market or private sale on March 17, 2026. The shares were sold at $73.06 per share for total proceeds of $87,599. This filing was made jointly by SRB and The Plymouth Rock Company Incorporated (PRC).
Key Details
- Transaction date: 2026-03-17; Sale price: $73.06 per share; Shares sold: 1,199; Total value: $87,599. (Transaction code S = Sale.)
- Form 4 filed: 2026-03-19 (timely filing within standard Section 16 reporting window).
- Shares owned after the transaction: not specified in the provided excerpt of the filing.
- Notable footnotes: joint filing by SRB and PRC (F1–F2). SRB is a direct, wholly-owned subsidiary of PRC and acts as investment manager; SRB disclaims beneficial ownership of the reported shares. PRC and various subsidiaries/managed entities are reported to hold substantial aggregate positions (examples from footnotes: PRC holds 4,120 shares; certain PRC subsidiaries aggregate ~787,007 shares; PSIA and related subsidiaries aggregate ~1,017,679 shares). The filing disclaims that the joint filing constitutes admission of a “group” for other regulatory purposes.
Context
- This was a sale by an institutional/10% owner entity (investment manager), not an individual executive. Such institutional sales can reflect portfolio rebalancing or other non-fundamental reasons and are not, by themselves, proof of company-specific issues.
- The filing does not indicate option exercises, gifts, tax withholding, or a 10b5-1 plan in the provided excerpt.
Insider Transaction Report
Form 4
SRB CORP
10% Owner
Transactions
- Sale
Common Stock
[F1][F2][F3][F4][F5]2026-03-17$73.06/sh−1,199$87,599→ 1,808,806 total(indirect: See)
Footnotes (5)
- [F1]This Form 4 is being jointly filed by SRB Corporation, a Massachusetts corporation ("SRB"), and The Plymouth Rock Company Incorporated, a Massachusetts corporation ("PRC"), and each shall be deemed a Reporting Person. SRB is a direct, wholly-owned subsidiary of PRC and acts as investment manager to PRC and, in such capacity, may be deemed to have voting and dispositive power over the shares of Common Stock reported on this Form 4. SRB disclaims beneficial ownership of the shares of Common Stock reported on this Form 4, and this report shall not be deemed an admission that SRB is a beneficial owner of such shares for purposes of Section 16 or for any other purpose. (Continued in Footnote 2)
- [F2]The Reporting Persons are making this single joint filing because they may be deemed a "group" within the meaning of Section 13(d)(3) of the Securities Act of 1934, as amended. This joint filing shall not, however, be deemed an affirmation that a group exists among the Reporting Persons for the purposes of the Securities Exchange Act of 1934 or for any other purpose and each Reporting Person expressly disclaims beneficial ownership of any securities beneficially owned by any other person.
- [F3]PRC holds 4,120 of the shares of Common Stock reported on this Form 4. The following subsidiaries of PRC hold in the aggregate 787,007 shares of the Common Stock reported on this Form 4: Plymouth Rock Security Corporation, a Massachusetts security corporation ("PRSC"); Plymouth Rock Assurance Corporation, a Massachusetts corporation ("PRAC"); Plymouth Rock Assurance Preferred Corporation, a New York corporation ("PRAPC"); Plymouth Rock Assurance Corporation of New York, a New York corporation ("PRACNY"); Pilgrim Insurance Company, a Massachusetts corporation ("Pilgrim"); Plymouth Rock Home Assurance Corporation, a Massachusetts corporation ("PRHAC"); Bunker Hill Insurance Casualty Company, a Massachusetts corporation ("BHICC"); Bunker Hill Preferred Insurance Company, a Massachusetts corporation ("BHPREFIC"); Bunker Hill Property Insurance Company, a Massachusetts corporation ("BHPIC"); (Continued in Footnote 4)
- [F4]and Bunker Hill Insurance Company, a Massachusetts corporation ("BHIC"). PRSC, PRAC, and PRHAC are direct wholly-owned subsidiaries of PRC. PRAPC and PRACNY are direct wholly-owned subsidiaries of PRAC. Pilgrim is a direct wholly-owned subsidiary of SRB. BHICC, BHPREFIC, BHPIC, and BHIC are direct wholly-owned subsidiaries of PRHAC. Palisades Safety and Insurance Association, a New Jersey reciprocal insurance exchange ("PSIA"), is managed by a subsidiary of PRC. PSIA and the following subsidiaries of PSIA hold in the aggregate 1,017,679 shares of the Common Stock reported on this Form 4: High Point Safety and Insurance Company, a New Jersey corporation ("HPSIC"); High Point Property and Casualty Insurance Company, a New Jersey corporation ("HPPCIC"); High Point Preferred Insurance Company, a New Jersey corporation ("HPPIC"); Palisades Insurance Company, a New Jersey corporation ("PICNJ"); (Continued in Footnote 5)
- [F5]Twin Lights Insurance Company, a New Jersey corporation ("TLIC"); and Teachers Auto Insurance Company of New Jersey, a New Jersey corporation ("TAIC"). HPSIC, HPPIC, TLIC, and TAIC are direct wholly-owned subsidiaries of HPPCIC, which is a direct wholly-owned subsidiary of PSIA, as is PICNJ. PRC disclaims beneficial ownership of the shares of Common Stock reported on this Form 4 except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that PRC is a beneficial owner of such shares for purposes of Section 16 or for any other purpose.
Signature
/s/ Frederick C. Childs|2026-03-19