As of November 6, 2026, 5 holders' latest Schedule 13D or 13G filings report owning 5% or more of Safety Insurance Group Inc. The largest reported stake is BlackRock, Inc.'s, at 14.3%. 9 filings are on record since July 17, 2025 (Schedule 13G/A, July 17, 2025).
Who owns Safety Insurance Group Inc?
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Key facts
- · Reporting person: Glazer Capital, LLC · Sole voting: 0 · Shared voting: 750,000 · Sole dispositive: 0 · Shared dispositive: 750,000 · SCHEDULE 13G, 2026-10-02
- · Reporting person: SRB Corporation · Sole voting: 0 · Shared voting: 257,164 · Sole dispositive: 0 · Shared dispositive: 257,164 · SCHEDULE 13G/A, 2026-07-29
- · Reporting person: State Street Corporation · Sole voting: 0 · Shared voting: 722,270 · Sole dispositive: 0 · Shared dispositive: 757,977 · SCHEDULE 13G, 2026-05-12
- · Reporting person: Vanguard Capital Management · Sole voting: 108,759 · Shared voting: 0 · Sole dispositive: 760,299 · Shared dispositive: 0 · SCHEDULE 13G, 2026-04-30
- · Holder: Vanguard Portfolio Management · Percent: 5.81% · SCHEDULE 13G
Safety Insurance Group Inc has 9 Schedule 13D or 13G filings on record since 2025-07-17. 5 holders' latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| BlackRock, Inc. | 14.3% | 2,134,011 | SCHEDULE 13G/A, 2025-07-17 | 2025-06-30 |
| Vanguard Portfolio Management | 5.81% | 851,434 | SCHEDULE 13G, 2026-04-29 | 2026-03-31 |
| State Street Corporation | 5.2% | 757,977 | SCHEDULE 13G, 2026-05-12 | 2026-03-31 |
| Vanguard Capital Management | 5.19% | 760,299 | SCHEDULE 13G, 2026-04-30 | 2026-03-31 |
| Glazer Capital, LLC | 5.1% | 750,000 | SCHEDULE 13G, 2026-10-02 | 2026-09-25 |
| SRB Corporation | 1.75% | 257,164 | SCHEDULE 13G/A, 2026-07-29 | 2026-07-27 |
| Victory Capital Management, Inc. | 0.02% | 3,203 | SCHEDULE 13G/A, 2025-10-31 | 2024-12-31 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-27 | 2026-03-13 |
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More on Safety Insurance Group Inc and the records around it.
Safety Insurance Group Inc elsewhere on the record
Companies that share a holder
- Victory Capital Management, Inc. also filed stake reports on 41 other companies: Angel Oak Mortgage REIT, Inc. (Nov 2026), Bowhead Specialty Holdings Inc. (Jul 2026), Dole plc (Jul 2026)
- Glazer Capital, LLC also filed stake reports on 107 other companies: Bumble Inc (Oct 2026), Weave Communications Inc (Oct 2026), Utz Brands Inc (Oct 2026)
- STATE STREET CORPORATION also filed stake reports on 343 other companies: TRADE DESK INC/THE (Oct 2026), CENTRUS ENERGY CORP (Sep 2026), ACADIA PHARMACEUTICALS INC (Aug 2026)
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What the Full Report on Safety Insurance Group Inc covers
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What They Do, And How The Money Works
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| State Street Corporation | 0 | 722,270 | 0 | 757,977 | SCHEDULE 13G, 2026-05-12 |
| Vanguard Capital Management | 108,759 | 0 | 760,299 | 0 | SCHEDULE 13G, 2026-04-30 |
| Glazer Capital, LLC | 0 | 750,000 | 0 | 750,000 | SCHEDULE 13G, 2026-10-02 |
| Paul J. Glazer | 0 | 750,000 | 0 | 750,000 | SCHEDULE 13G, 2026-10-02 |
| SRB Corporation | 0 | 257,164 | 0 | 257,164 | SCHEDULE 13G/A, 2026-07-29 |
| The Plymouth Rock Company Incorporated | 0 | 114,367 | 0 | 114,367 | SCHEDULE 13G/A, 2026-07-29 |
| Palisades Safety and Insurance Association | 0 | 142,797 | 0 | 142,797 | SCHEDULE 13G/A, 2026-07-29 |
The latest filing identifies Safety Insurance Group Inc by CUSIP 78648T100 and gives its principal executive office as 20 Custom House Street, Boston, MA 02110 (SCHEDULE 13G, 2026-10-02).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-17 | BlackRock, Inc. | 14.3% | SCHEDULE 13G/A |
| 2025-10-31 | Victory Capital Management, Inc. | 0.02% | SCHEDULE 13G/A |
| 2026-03-27 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-04-13 | SRB Corporation | 12.27% | SCHEDULE 13G/A |
| 2026-04-29 | Vanguard Portfolio Management | 5.81% | SCHEDULE 13G |
| 2026-04-30 | Vanguard Capital Management | 5.19% | SCHEDULE 13G |
| 2026-05-12 | State Street Corporation | 5.2% | SCHEDULE 13G |
| 2026-07-29 | SRB Corporation | 1.75% | SCHEDULE 13G/A |
| 2026-10-02 | Glazer Capital, LLC | 5.1% | SCHEDULE 13G |
Questions about who owns Safety Insurance Group Inc
Who owns Safety Insurance Group Inc?
On this page, 5 holders' latest ownership filings report 5% or more of Safety Insurance Group Inc: BlackRock, Inc. (14.3%, Schedule 13G/A, filed 2025-07-17), Vanguard Portfolio Management (5.81%, Schedule 13G, filed 2026-04-29), State Street Corporation (5.2%, Schedule 13G, filed 2026-05-12), Vanguard Capital Management (5.19%, Schedule 13G, filed 2026-04-30) and Glazer Capital, LLC (5.1%, Schedule 13G, filed 2026-10-02).
Who are the largest shareholders of Safety Insurance Group Inc?
By the share each holder's latest filing reports, the largest holders of Safety Insurance Group Inc on this page are BlackRock, Inc. (14.3%), Vanguard Portfolio Management (5.81%) and State Street Corporation (5.2%).
When did BlackRock, Inc. buy into Safety Insurance Group Inc?
The filings give report dates, not purchase dates. The earliest filing from BlackRock, Inc. on this page is the Schedule 13G/A, filed 2025-07-17, reporting 14.3%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 9 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.