Private company
SRB CORP
American company, incorporated in Massachusetts. Summary from the record
Last updated Oct 21, 2026.
Overview
- HeadquartersMA1
Corporate structure
SRB CORP sits at the top of its group. 2 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.
- SRB CORP MA
- SAFETY INSURANCE GROUP INC Stake ยท Boston, Massachusetts, United States
Built from major holders from Schedules 13D and 13G; stakes of 5% or more it reported on Schedules 13D and 13G (1 companies). Each entity in the chart links to its source.
Filings
23 filings to the SEC since October 2021: 23 other. The latest 20:
- Aug 21, 2026N-PX EDGAR
- Aug 14, 202613F-HR EDGAR
- May 14, 202613F-HR EDGAR
- Feb 13, 202613F-HR EDGAR
- Nov 14, 202513F-HR EDGAR
- Aug 25, 2025N-PX EDGAR
- Aug 14, 202513F-HR EDGAR
- May 14, 202513F-HR EDGAR
- Feb 14, 202513F-HR EDGAR
- Nov 14, 202413F-HR EDGAR
- Aug 30, 2024N-PX EDGAR
- Aug 14, 202413F-HR EDGAR
- May 14, 202413F-HR EDGAR
- Feb 14, 202413F-HR EDGAR
- Nov 14, 202313F-HR EDGAR
- Aug 14, 202313F-HR EDGAR
- May 15, 202313F-HR EDGAR
- Feb 14, 202313F-HR EDGAR
- Nov 14, 202213F-HR EDGAR
- Aug 12, 202213F-HR EDGAR
The 23 filings since October 2021 can be filtered by form type and year here when JavaScript is on.
Every filing from the last five years, summarized. The full record is on SEC EDGAR.
Stakes it holds
SRB CORP has told the SEC it owns more than 5% of 1 company, latest first (Schedules 13D and 13G).
- SAFETY INSURANCE GROUP INCSCHEDULE 13G/A Feb 14, 2022 to Jul 29, 20262
Sources
The numbers on this page point here. Each one links to the record it came from.
- 1SEC EDGARSRB CORP filings on SEC EDGAR
- 2