Insider filing report for Changes in Beneficial Ownership
- Schedule 13G & 13D forms are used to report a party's ownership of stock which exceeds 5% of a company's total stock issue.
- Schedule 13G is a shorter version of Schedule 13D with fewer reporting requirements.
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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 |
SCHEDULE 13D
Under the Securities Exchange Act of 1934
(Amendment No. 1)*
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W. R. BERKLEY CORPORATION (Name of Issuer) |
Common Stock, par value $0.20 per share (Title of Class of Securities) |
084423102 (CUSIP Number) |
Mitsui Sumitomo Insurance Co. Attn: Kunihisa Kawasaki, 9, Kanda-Surugadai, 3-chome, Chiyoda-Ku Tokyo, M0, 101-8011 81-3-3259-1462 Debevoise & Plimpton LLP Attn: Eric T. Juergens, Esq, 66 Hudson Boulevard New York, NY, 10001 (212) 909-6000 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) |
01/13/2026 (Date of Event Which Requires Filing of This Statement) |
If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.
The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the
Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other
provisions of the Act (however, see the Notes).
SCHEDULE 13D
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| CUSIP No. | 084423102 |
| 1 |
Name of reporting person
Mitsui Sumitomo Insurance Co., Ltd. | ||||||||
| 2 | Check the appropriate box if a member of a Group (See Instructions)
(a)
 (b)
| ||||||||
| 3 | SEC use only | ||||||||
| 4 |
Source of funds (See Instructions)
WC | ||||||||
| 5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
| ||||||||
| 6 | Citizenship or place of organization
JAPAN
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
52,726,504.00 | ||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
| ||||||||
| 13 | Percent of class represented by amount in Row (11)
13.9 % | ||||||||
| 14 | Type of Reporting Person (See Instructions)
IC |
Comment for Type of Reporting Person:
The aggregate amount in row (11) does not reflect shares of common stock, par value $0.20 per share (the "Common Stock"), of W. R. Berkley Corporation (the "Issuer") held by WR Berkley & Others LLC ("Family Holdings"), as further described in Items 5(a) and 6. Percentages are based on 380,021,174 shares of Common Stock outstanding as of October 28, 2025, as reported in the Issuer's Form 10-Q filed with the Securities and Exchange Commission on November 3, 2025.
SCHEDULE 13D
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| CUSIP No. | 084423102 |
| 1 |
Name of reporting person
MS&AD Insurance Group Holdings, Inc. | ||||||||
| 2 | Check the appropriate box if a member of a Group (See Instructions)
(a)
(b)
| ||||||||
| 3 | SEC use only | ||||||||
| 4 |
Source of funds (See Instructions)
WC | ||||||||
| 5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
| ||||||||
| 6 | Citizenship or place of organization
JAPAN
| ||||||||
| Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
| 11 | Aggregate amount beneficially owned by each reporting person
52,726,504.00 | ||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
| ||||||||
| 13 | Percent of class represented by amount in Row (11)
13.9 % | ||||||||
| 14 | Type of Reporting Person (See Instructions)
HC |
Comment for Type of Reporting Person:
The aggregate amount in row (11) does not reflect shares of Common Stock held by Family Holdings, as further described in Items 5(a) and 6. Percentages are based on 380,021,174 shares of Common Stock outstanding as of October 28, 2025, as reported in the Issuer's Form 10-Q filed with the Securities and Exchange Commission on November 3, 2025.
SCHEDULE 13D
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| Item 1. | Security and Issuer | |
| (a) | Title of Class of Securities:
Common Stock, par value $0.20 per share | |
| (b) | Name of Issuer:
W. R. BERKLEY CORPORATION | |
| (c) | Address of Issuer's Principal Executive Offices:
475 STEAMBOAT ROAD, GREENWICH,
CONNECTICUT
, 06830. | |
Item 1 Comment:
This Amendment No. 1 amends the Statement on Schedule 13D initially filed on December 11, 2025 with the Securities and Exchange Commission (as amended, the "Statement") by MS&AD Insurance Group Holdings, Inc., a kabushiki kaisha (stock corporation) organized under the laws of Japan ("MS&AD Holdings"), and Mitsui Sumitomo Insurance Co., Ltd., a kabushiki kaisha (stock corporation) organized under the laws of Japan ("MSI" and together with MS&AD Holdings, the "Reporting Persons"). | ||
| Item 3. | Source and Amount of Funds or Other Consideration | |
Item 3 is hereby amended and supplemented by adding the following paragraph at the end of Item 3: Between December 18, 2025 and January 14, 2026, MSI purchased an aggregate of 4,124,916 shares of Common Stock in the open market at average prices per share as set forth in Schedule I to this Statement for an aggregate purchase price of $287,433,279.73, all of which was paid using cash on hand. The shares of Common Stock were purchased in the open market pursuant to the previously disclosed 10b5-1 purchase plan entered into with Jefferies LLC on October 3, 2025. | ||
| Item 5. | Interest in Securities of the Issuer | |
| (a) | Item 5 is hereby amended and restated in its entirety to read as follows: MSI beneficially owns 52,726,504 shares of Common Stock, representing thirteen and nine tenths percent (13.9%) of the shares of Common Stock outstanding. Because MSI is its wholly-owned subsidiary, MS&AD Holdings may, in accordance with the rules of the Securities and Exchange Commission, be deemed to be an indirect beneficial owner of the shares of Common Stock beneficially owned by MSI. MS&AD Holdings disclaims beneficial ownership of such shares. The percentage beneficial ownership of the Reporting Persons has been determined based on 380,021,174 shares of Common Stock outstanding as of October 28, 2025, as reported in the Issuer's Form 10-Q filed with the Securities and Exchange Commission on November 3, 2025. The beneficial ownership information set forth above does not include any securities of the Issuer beneficially owned by Family Holdings. As a result of the Framework Agreement and LLC Agreement described in Item 6 of this Statement, the Reporting Persons may be deemed to beneficially own and share voting power over the shares of Common Stock beneficially owned by Family Holdings. As of the date hereof, Family Holdings beneficially owns an aggregate of 67,069,033 shares of Common Stock (approximately seventeen and six-tenths percent (17.6%) of the total number of shares of Common Stock outstanding). This Statement is not an admission or acknowledgment that the Reporting Persons constitute a "group" within the meaning of Rule 13d-5(b)(1) under the Act with Family Holdings. | |
| (b) | In addition to the description set forth above in Item 5(a), see the cover pages of this Statement for indications of the respective voting powers and disposition powers of the Reporting Persons. | |
| (c) | Schedule I sets forth the purchases of shares of Common Stock by MSI in the open market between December 18, 2025 and January 14, 2026 and is incorporated herein by reference. Except for the foregoing or as otherwise set forth herein, each of the Reporting Persons reports that neither it, nor to its knowledge, any other person named in Item 2 of this Statement, has effected any transactions in Common Stock during the past 60 days. | |
| (d) | Except as set forth herein, no one other than the Reporting Persons has the right to receive, or the power to direct the receipt of, dividends from, or the proceeds from the sale of, any of the securities of the Issuer beneficially owned by the Reporting Persons as described in this Item 5. | |
| (e) | Not applicable. | |
| Item 7. | Material to be Filed as Exhibits. | |
99.6 Schedule I, dated January 14, 2026 99.7 Joint Filing Agreement, dated December 11, 2025, by and between Mitsui Sumitomo Insurance Co., Ltd. and MS&AD Insurance Group Holdings, Inc. (incorporated by reference to Exhibit 99.1 to the Schedule 13D filed by the Reporting Persons with the SEC on December 11, 2025) | ||
| SIGNATURE | |
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
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