As of November 6, 2026, W R Berkley Corp is a publicly traded company (NYSE: WRB). The largest holder reporting an active stake on Schedule 13D is W. Robert Berkley, Jr., at 25.67%. No bankruptcy or receivership appears in its SEC Form 8-K filings. Founder or officer holdings: William R. Berkley, the chairman and a director (25.51%) (Schedule 13D/A, July 21, 2026).
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Is W R Berkley Corp a real, registered company?
- W R Berkley Corp files with the SEC under CIK 11544 (its SEC filings).
- Its shares are listed under the ticker WRB on NYSE (also WRB-PE, WRB-PF, WRB-PG, WRB-PH) (SEC company record).
- Incorporated in Delaware; business address in Greenwich, Connecticut, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under W R Berkley Corp in our court records and SEC 8-K records (as of 2026-11-06).
- Leadership changes: the latest reported is Lucille Sgaglione, Executive Vice President (Form 8-K filed 2026-06-26). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names W. Robert Berkley, Jr. (filed 2026-07-21).
Who are W R Berkley Corp's owners and officers?
W R Berkley Corp: incorporated in Delaware; business address in Greenwich, Connecticut; industry Fire, Marine & Casualty Insurance (Schedule 13G/A, 2026-10-30).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-10-30 | Vanguard Capital Management | 4.44% |
| Schedule 13G/A, 2026-10-27 | Blackrock, Inc. | 4.6% |
| Schedule 13D/A, 2026-07-21 | W. Robert Berkley, Jr. | 25.67% |
| Schedule 13D/A, 2026-06-04 | Mitsui Sumitomo Insurance Co., LTD. | 15.8% |
| Schedule 13G, 2026-04-30 | Vanguard Capital Management | 5.8% |
| Schedule 13G/A, 2026-03-27 | The Vanguard Group | 0% |
| Schedule 13D/A, 2026-03-05 | Mitsui Sumitomo Insurance Co., LTD. | 15.7% |
| Schedule 13D/A, 2026-03-05 | William R. Berkley | 25.51% |
| Schedule 13D/A, 2026-02-06 | Mitsui Sumitomo Insurance Co., LTD. | 14.9% |
| Schedule 13D/A, 2026-01-14 | Mitsui Sumitomo Insurance Co., LTD. | 13.9% |
| Schedule 13D, 2025-12-11 | Mitsui Sumitomo Insurance Co., LTD. | 12.8% |
| Schedule 13D, 2025-12-11 | Wr Berkley & Others LLC | 25.14% |
Questions about who owns W R Berkley Corp
Who owns W R Berkley Corp?
On this page, 4 holders' latest ownership filings report 5% or more of W R Berkley Corp: W. Robert Berkley, Jr. (25.67%, Schedule 13D/A, filed 2026-07-21), William R. Berkley (25.51%, Schedule 13D/A, filed 2026-03-05), Wr Berkley & Others LLC (25.14%, Schedule 13D, filed 2025-12-11) and Mitsui Sumitomo Insurance Co., LTD. (15.8%, Schedule 13D/A, filed 2026-06-04).
Who are the largest shareholders of W R Berkley Corp?
By the share each holder's latest filing reports, the largest holders of W R Berkley Corp on this page are W. Robert Berkley, Jr. (25.67%), William R. Berkley (25.51%) and Wr Berkley & Others LLC (25.14%).
When did W. Robert Berkley, Jr. buy into W R Berkley Corp?
The filings give report dates, not purchase dates. The earliest filing from W. Robert Berkley, Jr. on this page is the Schedule 13D/A, filed 2026-07-21, reporting 25.67%. 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%); 12 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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| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-06-26 | Lucille Sgaglione | Executive Vice President | departed | 2026-06-30 |
Which insiders own W R Berkley Corp shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , the chairman and a director: 91,001,464 shares (24.5% of shares outstanding), 17,366,375 held directly and 73,635,089 indirectly (Form 4, 2026-06-04).
- , the chairman and chief executive: 90,745,272 shares (24.4% of shares outstanding), 4,650,314 held directly and 86,094,958 indirectly (Form 4, 2026-08-05).
- Mitsui Sumitomo Insurance Co. Ltd., a 10% owner: 58,780,450 shares (15.8% of shares outstanding), on a joint filing (Form 4, 2026-03-03).
- MS&AD Insurance Group Holdings, Inc., a 10% owner: 58,780,450 shares (15.8% of shares outstanding), on a joint filing (Form 4, 2026-03-03).
- , the executive vice president - investments: 1,018,633 shares (0.27% of shares outstanding), 810,633 held directly and 208,000 indirectly (Form 4, 2026-08-05).
Shares outstanding: 371,515,776 as of 2026-10-26, from the company's latest SEC cover page.
How much has W R Berkley Corp raised?
No fundraising or offering filing from W R Berkley Corp is on file with us.
Keep reading
More on W R Berkley Corp and the records around it.
W R Berkley Corp elsewhere on the record
- 5%+ stake filings Oct 2026
- Leadership changes Jun 2026
Companies that share a holder
- Vanguard Capital Management also filed stake reports on 1495 other companies: A10 Networks Inc (Oct 2026), Altisource Portfolio Solutions SA (Oct 2026), Alto Neuroscience Inc (Oct 2026)
- BlackRock, Inc. also filed stake reports on 1596 other companies: AvePoint, Inc. (Nov 2026), BIOMARIN PHARMACEUTICAL INC (Nov 2026), MSG RANGERS CORP (Nov 2026)
- The Vanguard Group also filed stake reports on 2384 other companies: BellRing Brands, Inc. (Sep 2026), CAL-MAINE FOODS INC (Sep 2026), FTAI Aviation Ltd. (Sep 2026)
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