Last 12 months
Inside the activity.
94 purchase rows · 0 sale rows
Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.Monthly counts
| Month | Purchases | Sales |
|---|---|---|
| Nov 2025 | 0 | 0 |
| Dec 2025 | 11 | 0 |
| Jan 2026 | 42 | 0 |
| Feb 2026 | 37 | 0 |
| Mar 2026 | 4 | 0 |
| Apr 2026 | 0 | 0 |
| May 2026 | 0 | 0 |
| Jun 2026 | 0 | 0 |
| Jul 2026 | 0 | 0 |
| Aug 2026 | 0 | 0 |
| Sep 2026 | 0 | 0 |
| Oct 2026 | 0 | 0 |
Latest available
Insider transactions
Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Owner / reported role | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| February 06, 2026 Filed Feb 7, 2026 01:46 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 15,694 | $70.46 | $1,105,811.80 |
DisclosureSEC source: 0001193125-26-041641 · ownership.xml · nonDerivative · entry 3 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 56,454,350 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F5 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $70.1381 to $70.9994. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| February 05, 2026 Filed Feb 7, 2026 01:46 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 13,472 | $71.25 | $959,917.72 |
DisclosureSEC source: 0001193125-26-041641 · ownership.xml · nonDerivative · entry 2 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 56,438,656 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F4 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $71.0009 to $71.60. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| February 05, 2026 Filed Feb 7, 2026 01:46 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 6,528 | $70.79 | $462,109.94 |
DisclosureSEC source: 0001193125-26-041641 · ownership.xml · nonDerivative · entry 1 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 56,425,184 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F2 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $70.4471 to $70.9964. The Reporting Persons undertake to provide to W.R. Berkley Corporation (the "Issuer"), any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote and in footnotes 4, 5 and 6. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| February 04, 2026 Filed Feb 5, 2026 00:45 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 22,415 | $70.25 | $1,574,716.51 |
DisclosureSEC source: 0001193125-26-038028 · ownership.xml · nonDerivative · entry 6 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 56,418,656 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F8 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $70.00 to $70.63. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| February 04, 2026 Filed Feb 5, 2026 00:45 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 2,585 | $69.77 | $180,342.53 |
DisclosureSEC source: 0001193125-26-038028 · ownership.xml · nonDerivative · entry 5 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 56,396,241 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F7 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $69.4645 to $69.995. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| February 03, 2026 Filed Feb 5, 2026 00:45 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 31,653 | $68.87 | $2,179,904.13 |
DisclosureSEC source: 0001193125-26-038028 · ownership.xml · nonDerivative · entry 4 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 56,393,656 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F6 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.40 to $69.37. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| February 03, 2026 Filed Feb 5, 2026 00:45 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 8,347 | $67.75 | $565,497.56 |
DisclosureSEC source: 0001193125-26-038028 · ownership.xml · nonDerivative · entry 3 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 56,362,003 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F5 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.0009 to $68.7067. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| February 02, 2026 Filed Feb 5, 2026 00:45 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 13,159 | $68.42 | $900,300.62 |
DisclosureSEC source: 0001193125-26-038028 · ownership.xml · nonDerivative · entry 2 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 56,353,656 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F4 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $67.43 to $67.9942. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| February 02, 2026 Filed Feb 5, 2026 00:45 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 237,062 | $67.71 | $16,051,136.13 |
DisclosureSEC source: 0001193125-26-038028 · ownership.xml · nonDerivative · entry 1 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 56,340,497 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F2 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $67.43 to $67.9942. The Reporting Persons undertake to provide to W.R. Berkley Corporation (the "Issuer"), any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote and in footnotes 4, 5, 6, 7 and 8. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 30, 2026 Filed Jan 31, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 195,000 | $68.36 | $13,330,414.50 |
DisclosureSEC source: 0001193125-26-032269 · ownership.xml · nonDerivative · entry 3 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 56,103,435 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F5 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $67.83 to $68.645. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 29, 2026 Filed Jan 31, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 27,718 | $68.56 | $1,900,359.94 |
DisclosureSEC source: 0001193125-26-032269 · ownership.xml · nonDerivative · entry 2 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 55,908,435 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F4 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.4004 to $69.015. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 29, 2026 Filed Jan 31, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 262,282 | $68.08 | $17,856,578.21 |
DisclosureSEC source: 0001193125-26-032269 · ownership.xml · nonDerivative · entry 1 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 55,880,717 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F2 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $67.43 to $68.40. The Reporting Persons undertake to provide to W.R. Berkley Corporation (the "Issuer"), any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote and in footnotes 4 and 5. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 28, 2026 Filed Jan 29, 2026 01:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 28,577 | $67.89 | $1,940,192.55 |
DisclosureSEC source: 0001193125-26-027858 · ownership.xml · nonDerivative · entry 9 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 55,618,435 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F11 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $67.8011 to $68.015. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 28, 2026 Filed Jan 29, 2026 01:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 280,354 | $67.58 | $18,945,089.76 |
DisclosureSEC source: 0001193125-26-027858 · ownership.xml · nonDerivative · entry 8 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 55,589,858 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F10 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $66.87 to $67.80. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 27, 2026 Filed Jan 29, 2026 01:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 2,671 | $69.04 | $184,392.75 |
DisclosureSEC source: 0001193125-26-027858 · ownership.xml · nonDerivative · entry 7 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 55,309,504 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F9 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $69.00 to $69.37. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 27, 2026 Filed Jan 29, 2026 01:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 8,582 | $68.56 | $588,390.50 |
DisclosureSEC source: 0001193125-26-027858 · ownership.xml · nonDerivative · entry 6 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 55,306,833 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F8 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.25 to $68.99. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 27, 2026 Filed Jan 29, 2026 01:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 325,960 | $67.40 | $21,970,877.46 |
DisclosureSEC source: 0001193125-26-027858 · ownership.xml · nonDerivative · entry 5 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 55,298,251 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F7 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $67.00 to $67.82. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 27, 2026 Filed Jan 29, 2026 01:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 11,987 | $66.87 | $801,520.34 |
DisclosureSEC source: 0001193125-26-027858 · ownership.xml · nonDerivative · entry 4 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 54,972,291 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F6 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $66.03 to $66.9994. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 27, 2026 Filed Jan 29, 2026 01:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 800 | $65.86 | $52,689.44 |
DisclosureSEC source: 0001193125-26-027858 · ownership.xml · nonDerivative · entry 3 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 54,960,304 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F5 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $65.77 to $65.975. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 26, 2026 Filed Jan 29, 2026 01:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 76,389 | $67.88 | $5,185,056.15 |
DisclosureSEC source: 0001193125-26-027858 · ownership.xml · nonDerivative · entry 2 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 54,959,504 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F4 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $67.4004 to $68.19. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 26, 2026 Filed Jan 29, 2026 01:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 293,611 | $66.86 | $19,629,480.85 |
DisclosureSEC source: 0001193125-26-027858 · ownership.xml · nonDerivative · entry 1 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 54,883,115 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F2 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $66.45 to $67.40. The Reporting Persons undertake to provide to W.R. Berkley Corporation (the "Issuer"), any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote and in footnotes 4, 5, 6, 7, 8, 9, 10 and 11. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 23, 2026 Filed Jan 24, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 166,919 | $67.18 | $11,213,668.50 |
DisclosureSEC source: 0001193125-26-021399 · ownership.xml · nonDerivative · entry 3 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 54,589,504 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F5 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $67.00 to $67.9353. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 23, 2026 Filed Jan 24, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 201,081 | $66.77 | $13,426,158.26 |
DisclosureSEC source: 0001193125-26-021399 · ownership.xml · nonDerivative · entry 2 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 54,422,585 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F4 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $66.5195 to $66.9993. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 22, 2026 Filed Jan 24, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 330,000 | $67.45 | $22,258,665.00 |
DisclosureSEC source: 0001193125-26-021399 · ownership.xml · nonDerivative · entry 1 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 54,221,504 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F2 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $67.09 to $67.66. The Reporting Persons undertake to provide to W.R. Berkley Corporation (the "Issuer"), any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote and in footnotes 4 and 5. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 21, 2026 Filed Jan 22, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 260,998 | $67.60 | $17,644,299.99 |
DisclosureSEC source: 0001193125-26-018358 · ownership.xml · nonDerivative · entry 4 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 53,891,504 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F6 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $67.41 to $68.13. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 21, 2026 Filed Jan 22, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 59,002 | $66.95 | $3,950,337.31 |
DisclosureSEC source: 0001193125-26-018358 · ownership.xml · nonDerivative · entry 3 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 53,630,506 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F5 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $66.5523 to $67.40. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 20, 2026 Filed Jan 22, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 44,994 | $68.08 | $3,063,065.54 |
DisclosureSEC source: 0001193125-26-018358 · ownership.xml · nonDerivative · entry 2 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 53,571,504 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F4 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.00 to $68.2013. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 20, 2026 Filed Jan 22, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 265,006 | $67.75 | $17,954,315.50 |
DisclosureSEC source: 0001193125-26-018358 · ownership.xml · nonDerivative · entry 1 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 53,526,510 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F2 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $67.00 to $67.9998. The Reporting Persons undertake to provide to W.R. Berkley Corporation (the "Issuer"), any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote and in footnotes 4, 5 and 6. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 16, 2026 Filed Jan 17, 2026 00:00 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 58,691 | $68.79 | $4,037,101.52 |
DisclosureSEC source: 0001193125-26-015569 · ownership.xml · nonDerivative · entry 4 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 53,261,504 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F6 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.6711 to $69.055. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 16, 2026 Filed Jan 17, 2026 00:00 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 241,309 | $68.03 | $16,416,492.58 |
DisclosureSEC source: 0001193125-26-015569 · ownership.xml · nonDerivative · entry 3 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 53,202,813 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F5 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $67.68 to $68.67. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 15, 2026 Filed Jan 17, 2026 00:00 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 68,093 | $69.45 | $4,728,868.19 |
DisclosureSEC source: 0001193125-26-015569 · ownership.xml · nonDerivative · entry 2 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 52,961,504 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F4 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $69.00 to $69.775. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 15, 2026 Filed Jan 17, 2026 00:00 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 166,907 | $68.68 | $11,462,338.23 |
DisclosureSEC source: 0001193125-26-015569 · ownership.xml · nonDerivative · entry 1 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 52,893,411 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F2 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.31 to $68.9978. The Reporting Persons undertake to provide to W.R. Berkley Corporation (the "Issuer"), any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote and in footnotes 4, 5 and 6. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 14, 2026 Filed Jan 15, 2026 02:36 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 208,272 | $69.23 | $14,419,357.86 |
DisclosureSEC source: 0001193125-26-013375 · ownership.xml · nonDerivative · entry 5 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 52,726,504 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F7 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $69.00 to $69.74. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 14, 2026 Filed Jan 15, 2026 02:36 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 21,728 | $68.80 | $1,494,927.68 |
DisclosureSEC source: 0001193125-26-013375 · ownership.xml · nonDerivative · entry 4 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 52,518,232 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F6 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.245 to $68.9988. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 13, 2026 Filed Jan 15, 2026 02:36 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 206,499 | $68.15 | $14,072,473.20 |
DisclosureSEC source: 0001193125-26-013375 · ownership.xml · nonDerivative · entry 3 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 52,496,504 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F5 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.00 to $68.965. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 13, 2026 Filed Jan 15, 2026 02:36 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 118,501 | $67.82 | $8,037,223.67 |
DisclosureSEC source: 0001193125-26-013375 · ownership.xml · nonDerivative · entry 2 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 52,290,005 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F4 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $67.57 to $67.9993. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 12, 2026 Filed Jan 15, 2026 02:36 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 256,041 | $68.73 | $17,598,824.51 |
DisclosureSEC source: 0001193125-26-013375 · ownership.xml · nonDerivative · entry 1 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 52,171,504 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F2 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.42 to $69.30. The Reporting Persons undertake to provide to W.R. Berkley Corporation (the "Issuer"), any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote and in footnotes 4, 5, 6 and 7. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 09, 2026 Filed Jan 10, 2026 01:00 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 8,150 | $70.12 | $571,447.03 |
DisclosureSEC source: 0001193125-26-009283 · ownership.xml · nonDerivative · entry 6 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 51,915,463 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F8 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $70.0011 to $70.4398. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 09, 2026 Filed Jan 10, 2026 01:00 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 105,674 | $69.56 | $7,351,190.68 |
DisclosureSEC source: 0001193125-26-009283 · ownership.xml · nonDerivative · entry 5 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 51,907,313 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F7 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $69.00 to $69.9974. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 09, 2026 Filed Jan 10, 2026 01:00 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 161,176 | $68.48 | $11,037,590.36 |
DisclosureSEC source: 0001193125-26-009283 · ownership.xml · nonDerivative · entry 4 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 51,801,639 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F6 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.36 to $68.9975. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 08, 2026 Filed Jan 10, 2026 01:00 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 151,511 | $70.32 | $10,653,662.63 |
DisclosureSEC source: 0001193125-26-009283 · ownership.xml · nonDerivative · entry 3 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 51,640,463 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F5 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $70.00 to $70.555. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 08, 2026 Filed Jan 10, 2026 01:00 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 39,302 | $69.69 | $2,738,964.24 |
DisclosureSEC source: 0001193125-26-009283 · ownership.xml · nonDerivative · entry 2 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 51,488,952 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F4 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $69.0527 to $69.995. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 08, 2026 Filed Jan 10, 2026 01:00 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 4,187 | $68.79 | $288,029.17 |
DisclosureSEC source: 0001193125-26-009283 · ownership.xml · nonDerivative · entry 1 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 51,449,650 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F2 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.445 to $68.995. The Reporting Persons undertake to provide to W.R. Berkley Corporation (the "Issuer"), any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote and in footnotes 4, 5, 6, 7 and 8. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 07, 2026 Filed Jan 8, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 10,378 | $69.20 | $718,202.23 |
DisclosureSEC source: 0001193125-26-006715 · ownership.xml · nonDerivative · entry 7 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 51,445,463 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F9 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $69.00 to $69.445. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 07, 2026 Filed Jan 8, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 254,622 | $68.47 | $17,433,382.71 |
DisclosureSEC source: 0001193125-26-006715 · ownership.xml · nonDerivative · entry 6 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 51,435,085 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F8 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.07 to $68.9999. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 06, 2026 Filed Jan 8, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 92,357 | $70.21 | $6,484,523.51 |
DisclosureSEC source: 0001193125-26-006715 · ownership.xml · nonDerivative · entry 5 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 51,180,463 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F7 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $70.00 to $70.67. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 06, 2026 Filed Jan 8, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 122,931 | $69.93 | $8,596,294.38 |
DisclosureSEC source: 0001193125-26-006715 · ownership.xml · nonDerivative · entry 4 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 51,088,106 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F6 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $69.25 to $69.9999. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 05, 2026 Filed Jan 8, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 153,686 | $70.78 | $10,877,510.87 |
DisclosureSEC source: 0001193125-26-006715 · ownership.xml · nonDerivative · entry 3 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 50,965,175 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F5 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $70.60 to $71.0727. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 05, 2026 Filed Jan 8, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 35,894 | $70.23 | $2,520,918.18 |
DisclosureSEC source: 0001193125-26-006715 · ownership.xml · nonDerivative · entry 2 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 50,811,489 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F4 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $69.706 to $70.5996. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
| January 05, 2026 Filed Jan 8, 2026 00:30 UTC |
Mitsui Sumitomo Insurance Co Ltd10% owner
MS&AD Insurance Group Holdings, Inc.10% owner
|
PurchaseCommon Stock | 11,350 | $69.20 | $785,415.46 |
DisclosureSEC source: 0001193125-26-006715 · ownership.xml · nonDerivative · entry 1 MITSUI SUMITOMO INSURANCE CO LTD · CIK 0001142206 · 10% owner MS&AD Insurance Group Holdings, Inc. · CIK 0001431048 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 50,775,595 F1 · kind: The purchases reported on this Form 4 were effected pursuant to a Rule 10b5-1 purchase plan, adopted October 3, 2025. F2 · price: The price reported is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $68.7 to $69.6978. The Reporting Persons undertake to provide to W.R. Berkley Corporation (the "Issuer"), any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote and in footnotes 4, 5, 6, 7, 8 and 9. F3 · ownership.direct: The shares are held directly by Mitsui Sumitomo Insurance Co., Ltd. ("MSI"). Because MSI is a wholly-owned subsidiary of MS&AD Insurance Group Holdings, Inc. ("MS&AD"), MS&AD may be deemed to beneficially own the reported securities. MS&AD expressly disclaims beneficial ownership of the reported securities, except to the extent of its pecuniary interest therein. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.