Last 12 months
Inside the activity.
3 purchase rows · 23 sale rows
Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.Monthly counts
| Month | Purchases | Sales |
|---|---|---|
| Nov 2025 | 0 | 3 |
| Dec 2025 | 0 | 16 |
| Jan 2026 | 0 | 0 |
| Feb 2026 | 0 | 1 |
| Mar 2026 | 0 | 0 |
| Apr 2026 | 0 | 0 |
| May 2026 | 3 | 3 |
| 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 |
|---|---|---|---|---|---|---|
| July 15, 2026 Filed Jul 16, 2026 20:55 UTC |
Crowley Andrew G.EVP & Pres., Markel Ventures
|
OtherCommon Stock | 7.4805 | $1,730.49 | $12,944.93 |
DisclosureSEC source: 0001926618-26-000008 · wk-form4_1784235323.xml · nonDerivative · entry 2 Crowley Andrew G. · CIK 0001926618 · EVP & Pres., Markel Ventures 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,748.6526 F2 · shares: Shares acquired under the non-qualified component of the MKL 2020 Employee Stock Purchase Plan. Read SEC document |
| June 30, 2026 Filed Jul 16, 2026 20:55 UTC |
Costanzo Brian J.Chief Financial Officer
|
OtherCommon Stock | 2.1642 | $1,617.19 | $3,499.92 |
DisclosureSEC source: 0001873434-26-000008 · wk-form4_1784235349.xml · nonDerivative · entry 1 Costanzo Brian J. · CIK 0001873434 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,632.2394 F1 · shares: Shares acquired under the qualified component of the MKL 2020 Employee Stock Purchase Plan in a transaction exempt under Exchange Act Rule 16b-3(c). Read SEC document |
| June 30, 2026 Filed Jul 16, 2026 20:55 UTC |
Crowley Andrew G.EVP & Pres., Markel Ventures
|
OtherCommon Stock | 2.8166 | $1,617.19 | $4,554.98 |
DisclosureSEC source: 0001926618-26-000008 · wk-form4_1784235323.xml · nonDerivative · entry 1 Crowley Andrew G. · CIK 0001926618 · EVP & Pres., Markel Ventures 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,741.1721 F1 · shares: Shares acquired under the qualified component of the MKL 2020 Employee Stock Purchase Plan in a transaction exempt under Exchange Act Rule 16b-3(c). Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 20:35 UTC |
Housel Morgan E.Director
|
OtherCommon Stock | 65.9218 | $1,668.65 | $110,000.41 |
DisclosureSEC source: 0001894001-26-000004 · wk-form4_1781728498.xml · nonDerivative · entry 1 Housel Morgan E. · CIK 0001894001 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,028.9718 F1 · kind: Shares acquired pursuant to the MKL 2020 Employee Stock Purchase Plan. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 20:35 UTC |
Besca MarkDirector
|
OtherCommon Stock | 80.904 | $1,668.65 | $135,000.46 |
DisclosureSEC source: 0001831351-26-000007 · wk-form4_1781728515.xml · nonDerivative · entry 1 Besca Mark · CIK 0001831351 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,222.1565 F1 · kind: Shares acquired pursuant to the MKL 2020 Employee Stock Purchase Plan. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 20:34 UTC |
Leopold DianeDirector
|
OtherCommon Stock | 65.9218 | $1,668.65 | $110,000.41 |
DisclosureSEC source: 0001595985-26-000018 · wk-form4_1781728479.xml · nonDerivative · entry 1 Leopold Diane · CIK 0001595985 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,345.0211 F1 · kind: Shares acquired pursuant to the MKL 2020 Employee Stock Purchase Plan. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 20:34 UTC |
MICHAEL JONATHAN EDirector
|
OtherCommon Stock | 65.9218 | $1,668.65 | $110,000.41 |
DisclosureSEC source: 0001192701-26-000004 · wk-form4_1781728456.xml · nonDerivative · entry 1 MICHAEL JONATHAN E · CIK 0001192701 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 332.7271 F1 · kind: Shares acquired pursuant to the MKL 2020 Employee Stock Purchase Plan. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 20:33 UTC |
Morrison Harold Lawrence Jr.Director
|
OtherCommon Stock | 32.9609 | $1,668.65 | $55,000.21 |
DisclosureSEC source: 0001438434-26-000005 · wk-form4_1781728433.xml · nonDerivative · entry 1 Morrison Harold Lawrence Jr. · CIK 0001438434 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,126.9644 F1 · kind: Shares acquired pursuant to the MKL 2020 Employee Stock Purchase Plan. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 20:33 UTC |
Cunningham Lawrence ADirector
|
OtherCommon Stock | 32.9609 | $1,668.65 | $55,000.21 |
DisclosureSEC source: 0001699875-26-000004 · wk-form4_1781728412.xml · nonDerivative · entry 1 Cunningham Lawrence A · CIK 0001699875 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,041.799 F1 · kind: Shares acquired pursuant to the MKL 2020 Employee Stock Purchase Plan. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 20:33 UTC |
Puckett A. LynneDirector
|
OtherCommon Stock | 65.9218 | $1,668.65 | $110,000.41 |
DisclosureSEC source: 0001502389-26-000006 · wk-form4_1781728388.xml · nonDerivative · entry 1 Puckett A. Lynne · CIK 0001502389 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 507.402 F1 · kind: Shares acquired pursuant to the MKL 2020 Employee Stock Purchase Plan. Read SEC document |
| June 15, 2026 Filed Jun 17, 2026 20:32 UTC |
OREILLY MICHAELDirector
|
OtherCommon Stock | 89.8933 | $1,668.65 | $150,000.46 |
DisclosureSEC source: 0001192729-26-000004 · wk-form4_1781728363.xml · nonDerivative · entry 1 OREILLY MICHAEL · CIK 0001192729 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,934.6574 F1 · kind: Shares acquired pursuant to the MKL 2020 Employee Stock Purchase Plan. Read SEC document |
| May 22, 2026 Filed May 27, 2026 20:33 UTC |
Harris Greta JDirector
|
SaleCommon Stock | 27 | $1,848.83 | $49,918.41 |
DisclosureSEC source: 0001857626-26-000004 · wk-form4_1779914029.xml · nonDerivative · entry 3 Harris Greta J · CIK 0001857626 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 645 F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,848.34 to $1,848.87, inclusive. The reporting person undertakes to provide to any security holder of MKL or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| May 22, 2026 Filed May 27, 2026 20:33 UTC |
Harris Greta JDirector
|
SaleCommon Stock | 14 | $1,847.36 | $25,863.04 |
DisclosureSEC source: 0001857626-26-000004 · wk-form4_1779914029.xml · nonDerivative · entry 2 Harris Greta J · CIK 0001857626 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 672 F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,847.19 to $1,847.46, inclusive. The reporting person undertakes to provide to any security holder of MKL or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| May 22, 2026 Filed May 27, 2026 20:33 UTC |
Harris Greta JDirector
|
SaleCommon Stock | 35 | $1,846.12 | $64,614.20 |
DisclosureSEC source: 0001857626-26-000004 · wk-form4_1779914029.xml · nonDerivative · entry 1 Harris Greta J · CIK 0001857626 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 686 F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1,846.00 to $1,846.31, inclusive. The reporting person undertakes to provide to any security holder of MKL or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Read SEC document |
| May 20, 2026 Filed May 22, 2026 20:33 UTC |
Housel Morgan E.Director
|
GrantCommon Stock | 89 | $0.00 | $0.00 |
DisclosureSEC source: 0001894001-26-000002 · wk-form4_1779481985.xml · nonDerivative · entry 1 Housel Morgan E. · CIK 0001894001 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 963.05 F1 · kind: Restricted stock granted pursuant to the MKL 2024 Equity Incentive Compensation Plan. Shares will vest, subject to certain conditions, May 20, 2027. Read SEC document |
| May 20, 2026 Filed May 22, 2026 21:02 UTC |
MICHAEL JONATHAN EDirector
|
GrantCommon Stock | 89 | $0.00 | $0.00 |
DisclosureSEC source: 0001192701-26-000002 · wk-form4_1779483729.xml · nonDerivative · entry 1 MICHAEL JONATHAN E · CIK 0001192701 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 266.8053 F1 · kind: Restricted stock granted pursuant to the MKL 2024 Equity Incentive Compensation Plan. Shares will vest, subject to certain conditions, on May 20, 2027. Read SEC document |
| May 20, 2026 Filed May 22, 2026 20:39 UTC |
Morrison Harold Lawrence Jr.Director
|
GrantCommon Stock | 89 | $0.00 | $0.00 |
DisclosureSEC source: 0001438434-26-000003 · wk-form4_1779482395.xml · nonDerivative · entry 1 Morrison Harold Lawrence Jr. · CIK 0001438434 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,094.0035 F1 · kind: Restricted stock granted pursuant to the MKL 2024 Equity Incentive Compensation Plan. Shares will vest, subject to certain conditions, May 20, 2027. Read SEC document |
| May 20, 2026 Filed May 22, 2026 20:38 UTC |
Besca MarkDirector
|
GrantCommon Stock | 89 | $0.00 | $0.00 |
DisclosureSEC source: 0001831351-26-000005 · wk-form4_1779482317.xml · nonDerivative · entry 1 Besca Mark · CIK 0001831351 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,141.2525 F1 · kind: Restricted stock granted pursuant to the MKL 2024 Equity Incentive Compensation Plan. Shares will vest, subject to certain conditions, May 20, 2027. Read SEC document |
| May 20, 2026 Filed May 22, 2026 20:35 UTC |
Cunningham Lawrence ADirector
|
GrantCommon Stock | 89 | $0.00 | $0.00 |
DisclosureSEC source: 0001699875-26-000002 · wk-form4_1779482139.xml · nonDerivative · entry 1 Cunningham Lawrence A · CIK 0001699875 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,008.8381 F1 · kind: Restricted stock granted pursuant to the MKL 2024 Equity Incentive Compensation Plan. Shares will vest, subject to certain conditions, May 20, 2027. Read SEC document |
| May 20, 2026 Filed May 22, 2026 20:36 UTC |
Harris Greta JDirector
|
GrantCommon Stock | 89 | $0.00 | $0.00 |
DisclosureSEC source: 0001857626-26-000002 · wk-form4_1779482161.xml · nonDerivative · entry 1 Harris Greta J · CIK 0001857626 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 721 F1 · kind: Restricted stock granted pursuant to the MKL 2024 Equity Incentive Compensation Plan. Shares will vest, subject to certain conditions, May 20, 2027. Read SEC document |
| May 20, 2026 Filed May 22, 2026 20:33 UTC |
OREILLY MICHAELDirector
|
GrantCommon Stock | 89 | $0.00 | $0.00 |
DisclosureSEC source: 0001192729-26-000002 · wk-form4_1779482010.xml · nonDerivative · entry 1 OREILLY MICHAEL · CIK 0001192729 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,844.7641 F1 · kind: Restricted stock granted pursuant to the MKL 2024 Equity Incentive Compensation Plan. Shares will vest, subject to certain conditions, May 20, 2027. Read SEC document |
| May 20, 2026 Filed May 22, 2026 20:32 UTC |
Puckett A. LynneDirector
|
GrantCommon Stock | 89 | $0.00 | $0.00 |
DisclosureSEC source: 0001502389-26-000004 · wk-form4_1779481962.xml · nonDerivative · entry 1 Puckett A. Lynne · CIK 0001502389 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 441.4802 F1 · kind: Restricted stock granted pursuant to the MKL 2024 Equity Incentive Compensation Plan. Shares will vest, subject to certain conditions, May 20, 2027. Read SEC document |
| May 20, 2026 Filed May 22, 2026 20:32 UTC |
Leopold DianeDirector
|
GrantCommon Stock | 89 | $0.00 | $0.00 |
DisclosureSEC source: 0001595985-26-000016 · wk-form4_1779481938.xml · nonDerivative · entry 1 Leopold Diane · CIK 0001595985 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,279.0993 F1 · kind: Restricted stock granted pursuant to the MKL 2024 Equity Incentive Compensation Plan. Shares will vest, subject to certain conditions, May 20, 2027. Read SEC document |
| May 15, 2026 Filed May 19, 2026 20:33 UTC |
GAYNER THOMAS SINNICKSONDirector · Chief Executive Officer
|
Tax withholdingCommon Stock | 481.668 | $1,844.00 | $888,195.79 |
DisclosureSEC source: 0001159015-26-000004 · wk-form4_1779222815.xml · nonDerivative · entry 1 GAYNER THOMAS SINNICKSON · CIK 0001159015 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 56,259.6654 Read SEC document |
| May 15, 2026 Filed May 19, 2026 20:32 UTC |
Crowley Andrew G.EVP & Pres., Markel Ventures
|
OtherCommon Stock | 60.2555 | $1,659.60 | $100,000.03 |
DisclosureSEC source: 0001926618-26-000006 · wk-form4_1779222757.xml · nonDerivative · entry 2 Crowley Andrew G. · CIK 0001926618 · EVP & Pres., Markel Ventures 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,738.3555 F1 · shares: Shares acquired under the non-qualified component of the MKL 2020 Employee Stock Purchase Plan. Read SEC document |
| May 15, 2026 Filed May 19, 2026 20:32 UTC |
Crowley Andrew G.EVP & Pres., Markel Ventures
|
Tax withholdingCommon Stock | 74.866 | $1,844.00 | $138,052.90 |
DisclosureSEC source: 0001926618-26-000006 · wk-form4_1779222757.xml · nonDerivative · entry 1 Crowley Andrew G. · CIK 0001926618 · EVP & Pres., Markel Ventures 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,678.1 Read SEC document |
| May 15, 2026 Filed May 19, 2026 20:33 UTC |
Grinnan Richard RandolphSVP, Chief Legal Officer & Sec
|
Tax withholdingCommon Stock | 116.358 | $1,844.00 | $214,564.15 |
DisclosureSEC source: 0001343787-26-000004 · wk-form4_1779222790.xml · nonDerivative · entry 1 Grinnan Richard Randolph · CIK 0001343787 · SVP, Chief Legal Officer & Sec 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,147.0699 Read SEC document |
| May 15, 2026 Filed May 19, 2026 20:31 UTC |
Costanzo Brian J.Chief Financial Officer
|
OtherCommon Stock | 30.1277 | $1,659.60 | $49,999.93 |
DisclosureSEC source: 0001873434-26-000006 · wk-form4_1779222713.xml · nonDerivative · entry 2 Costanzo Brian J. · CIK 0001873434 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,630.0752 F1 · shares: Shares acquired under the non-qualified component of the MKL 2020 Employee Stock Purchase Plan. Read SEC document |
| May 15, 2026 Filed May 19, 2026 20:31 UTC |
Costanzo Brian J.Chief Financial Officer
|
Tax withholdingCommon Stock | 13.08 | $1,844.00 | $24,119.52 |
DisclosureSEC source: 0001873434-26-000006 · wk-form4_1779222713.xml · nonDerivative · entry 1 Costanzo Brian J. · CIK 0001873434 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,599.9475 Read SEC document |
| May 07, 2026 Filed May 8, 2026 20:31 UTC |
Leopold DianeDirector
|
PurchaseCommon Stock | 50 | $1,789.19 | $89,459.50 |
DisclosureSEC source: 0001595985-26-000012 · wk-form4_1778272295.xml · nonDerivative · entry 2 Leopold Diane · CIK 0001595985 · Director 10b5-1 filing: No plan indicated Ownership: Indirect · By Spouse Disclosed balance after: 550 F1 · ownership.nature: Beneficial ownership of securities is expressly disclaimed. Read SEC document |
| May 06, 2026 Filed May 8, 2026 20:31 UTC |
Leopold DianeDirector
|
PurchaseCommon Stock | 100 | $1,792.61 | $179,261.00 |
DisclosureSEC source: 0001595985-26-000012 · wk-form4_1778272295.xml · nonDerivative · entry 1 Leopold Diane · CIK 0001595985 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,190.0993 Read SEC document |
| May 01, 2026 Filed May 5, 2026 20:37 UTC |
Puckett A. LynneDirector
|
PurchaseCommon Stock | 57 | $1,795.53 | $102,345.21 |
DisclosureSEC source: 0001502389-26-000002 · wk-form4_1778013448.xml · nonDerivative · entry 1 Puckett A. Lynne · CIK 0001502389 · Director 10b5-1 filing: No plan indicated Ownership: Indirect · By Trust Disclosed balance after: 1,463 F1 · ownership.nature: The reporting person and her spouse are co-trustees and beneficiaries under the trust. Read SEC document |
| March 31, 2026 Filed Apr 15, 2026 20:33 UTC |
Crowley Andrew G.EVP & Pres., Markel Ventures
|
OtherCommon Stock | 9.2196 | $1,626.96 | $14,999.92 |
DisclosureSEC source: 0001926618-26-000004 · wk-form4_1776285192.xml · nonDerivative · entry 1 Crowley Andrew G. · CIK 0001926618 · EVP & Pres., Markel Ventures 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,752.966 F1 · shares: Shares acquired under the qualified component of the MKL 2020 Employee Stock Purchase Plan in a transaction exempt under Exchange Act Rule 16b-3(c). Read SEC document |
| March 31, 2026 Filed Apr 15, 2026 20:32 UTC |
Costanzo Brian J.Chief Financial Officer
|
OtherCommon Stock | 1.8439 | $1,626.96 | $2,999.95 |
DisclosureSEC source: 0001873434-26-000004 · wk-form4_1776285171.xml · nonDerivative · entry 1 Costanzo Brian J. · CIK 0001873434 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,613.0275 F1 · shares: Shares acquired under the qualified component of the MKL 2020 Employee Stock Purchase Plan in a transaction exempt under Exchange Act Rule 16b-3(c). Read SEC document |
| February 26, 2026 Filed Feb 26, 2026 23:22 UTC |
Wilson SimonEVP and CEO, Markel Insurance
|
SaleCommon Stock | 100 | $2,079.48 | $207,948.48 |
DisclosureSEC source: 0002061485-26-000005 · wk-form4_1772148131.xml · nonDerivative · entry 2 Wilson Simon · CIK 0002061485 · EVP and CEO, Markel Insurance 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,396.7456 Read SEC document |
| February 24, 2026 Filed Feb 26, 2026 23:27 UTC |
Costanzo Brian J.Chief Financial Officer
|
GrantCommon Stock | 654.641 | $0.00 | $0.00 |
DisclosureSEC source: 0001873434-26-000003 · wk-form4_1772148452.xml · nonDerivative · entry 1 Costanzo Brian J. · CIK 0001873434 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,611.1836 F1 · shares: Restricted stock units (RSUs) awarded pursuant to the MKL 2024 Equity Incentive Compensation Plan. Subject to certain conditions, 539.739 RSUs will vest on December 31, 2028, and 114.902 RSUs will vest on February 24, 2029. Read SEC document |
| February 24, 2026 Filed Feb 26, 2026 23:26 UTC |
Crowley Andrew G.EVP & Pres., Markel Ventures
|
GrantCommon Stock | 830.02 | $0.00 | $0.00 |
DisclosureSEC source: 0001926618-26-000002 · wk-form4_1772148397.xml · nonDerivative · entry 1 Crowley Andrew G. · CIK 0001926618 · EVP & Pres., Markel Ventures 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,743.7464 F1 · shares: Restricted stock units (RSUs) awarded pursuant to the MKL 2024 Equity Incentive Compensation Plan. Subject to certain conditions, 693.951 RSUs will vest on December 31, 2028, and 136.069 RSUs will vest on February 24, 2029. Read SEC document |
| February 24, 2026 Filed Feb 26, 2026 23:25 UTC |
Grinnan Richard RandolphSVP, Chief Legal Officer & Sec
|
GrantCommon Stock | 800.508 | $0.00 | $0.00 |
DisclosureSEC source: 0001343787-26-000002 · wk-form4_1772148337.xml · nonDerivative · entry 1 Grinnan Richard Randolph · CIK 0001343787 · SVP, Chief Legal Officer & Sec 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 4,263.4279 F1 · shares: Restricted stock units (RSUs) awarded pursuant to the MKL 2024 Equity Incentive Compensation Plan. Subject to certain conditions, 669.277 RSUs will vest on December 31, 2028, and 131.231 RSUs will vest on February 24, 2029. Read SEC document |
| February 24, 2026 Filed Feb 26, 2026 23:24 UTC |
Grandis Meade P.CAO and Controller
|
GrantCommon Stock | 69.722 | $0.00 | $0.00 |
DisclosureSEC source: 0002004810-26-000002 · wk-form4_1772148277.xml · nonDerivative · entry 1 Grandis Meade P. · CIK 0002004810 · CAO and Controller 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 294.077 F1 · shares: Restricted stock units (RSUs) awarded pursuant to the MKL 2024 Equity Incentive Compensation Plan. Subject to certain conditions, 58.292 RSUs will vest on December 31, 2028, and 11.430 RSUs will vest on February 24, 2029. Read SEC document |
| February 24, 2026 Filed Feb 26, 2026 23:23 UTC |
GAYNER THOMAS SINNICKSONDirector · Chief Executive Officer
|
GrantCommon Stock | 4,483.616 | $0.00 | $0.00 |
DisclosureSEC source: 0001159015-26-000002 · wk-form4_1772148204.xml · nonDerivative · entry 1 GAYNER THOMAS SINNICKSON · CIK 0001159015 · Director · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 56,741.3334 F1 · shares: Restricted stock units (RSUs) awarded pursuant to the MKL 2024 Equity Incentive Compensation Plan. Subject to certain conditions, 3,731.912 RSUs will vest on December 31, 2028, and 751.704 RSUs will vest on February 24, 2029. Read SEC document |
| February 24, 2026 Filed Feb 26, 2026 23:22 UTC |
Wilson SimonEVP and CEO, Markel Insurance
|
GrantCommon Stock | 868.117 | $0.00 | $0.00 |
DisclosureSEC source: 0002061485-26-000005 · wk-form4_1772148131.xml · nonDerivative · entry 1 Wilson Simon · CIK 0002061485 · EVP and CEO, Markel Insurance 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,496.7456 F1 · shares: Restricted stock units (RSUs) awarded pursuant to the MKL 2024 Equity Incentive Compensation Plan. Subject to certain conditions, 629.914 RSUs will vest on December 31, 2028, and 238.203 RSUs will vest on February 24, 2029. Read SEC document |
| February 17, 2026 Filed Feb 19, 2026 21:34 UTC |
Wilson SimonCEO, Markel Insurance
|
Tax withholdingCommon Stock | 47 | $2,084.46 | $97,969.62 |
DisclosureSEC source: 0002061485-26-000002 · wk-form4_1771536851.xml · nonDerivative · entry 1 Wilson Simon · CIK 0002061485 · CEO, Markel Insurance 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,628.6286 Read SEC document |
| December 31, 2025 Filed Jan 20, 2026 21:46 UTC |
Costanzo Brian J.Chief Financial Officer
|
OtherCommon Stock | 2.184 | $1,602.62 | $3,500.12 |
DisclosureSEC source: 0001096343-26-000001 · wk-form4_1768945556.xml · nonDerivative · entry 1 Costanzo Brian J. · CIK 0001873434 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 956.5426 F1 · shares: Shares acquired under the qualified component of the MKL 2020 Employee Stock Purchase Plan in a transaction exempt under Exchange Act Rule 16b-3(c). Read SEC document |
| December 11, 2025 Filed Dec 15, 2025 21:41 UTC |
MARKEL STEVEN ADirector
|
SaleCommon Stock | 120 | $2,129.98 | $255,597.60 |
DisclosureSEC source: 0001096343-25-000159 · wk-form4_1765834864.xml · nonDerivative · entry 16 MARKEL STEVEN A · CIK 0001184575 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 60,368 F1 · ownership.direct: The reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted August 15, 2025. Read SEC document |
| December 11, 2025 Filed Dec 15, 2025 21:41 UTC |
MARKEL STEVEN ADirector
|
SaleCommon Stock | 10 | $2,128.00 | $21,280.00 |
DisclosureSEC source: 0001096343-25-000159 · wk-form4_1765834864.xml · nonDerivative · entry 15 MARKEL STEVEN A · CIK 0001184575 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 60,488 F1 · ownership.direct: The reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted August 15, 2025. Read SEC document |
| December 11, 2025 Filed Dec 15, 2025 21:41 UTC |
MARKEL STEVEN ADirector
|
SaleCommon Stock | 190 | $2,127.26 | $404,179.40 |
DisclosureSEC source: 0001096343-25-000159 · wk-form4_1765834864.xml · nonDerivative · entry 14 MARKEL STEVEN A · CIK 0001184575 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 60,498 F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2,127.00 to $2,127.51, inclusive. The reporting person undertakes to provide to any security holder of MKL or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. F1 · ownership.direct: The reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted August 15, 2025. Read SEC document |
| December 11, 2025 Filed Dec 15, 2025 21:41 UTC |
MARKEL STEVEN ADirector
|
SaleCommon Stock | 75 | $2,126.00 | $159,450.00 |
DisclosureSEC source: 0001096343-25-000159 · wk-form4_1765834864.xml · nonDerivative · entry 13 MARKEL STEVEN A · CIK 0001184575 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 60,688 F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2,126.00 to $2,126.01, inclusive. The reporting person undertakes to provide to any security holder of MKL or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. F1 · ownership.direct: The reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted August 15, 2025. Read SEC document |
| December 11, 2025 Filed Dec 15, 2025 21:41 UTC |
MARKEL STEVEN ADirector
|
SaleCommon Stock | 32 | $2,125.00 | $68,000.00 |
DisclosureSEC source: 0001096343-25-000159 · wk-form4_1765834864.xml · nonDerivative · entry 12 MARKEL STEVEN A · CIK 0001184575 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 60,763 F1 · ownership.direct: The reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted August 15, 2025. Read SEC document |
| December 11, 2025 Filed Dec 15, 2025 21:41 UTC |
MARKEL STEVEN ADirector
|
SaleCommon Stock | 10 | $2,123.05 | $21,230.50 |
DisclosureSEC source: 0001096343-25-000159 · wk-form4_1765834864.xml · nonDerivative · entry 11 MARKEL STEVEN A · CIK 0001184575 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 60,795 F1 · ownership.direct: The reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted August 15, 2025. Read SEC document |
| December 11, 2025 Filed Dec 15, 2025 21:41 UTC |
MARKEL STEVEN ADirector
|
SaleCommon Stock | 173 | $2,121.69 | $367,052.37 |
DisclosureSEC source: 0001096343-25-000159 · wk-form4_1765834864.xml · nonDerivative · entry 10 MARKEL STEVEN A · CIK 0001184575 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 60,805 F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2,121.10 to $2,122.01, inclusive. The reporting person undertakes to provide to any security holder of MKL or to the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. F1 · ownership.direct: The reported sales were effected pursuant to a Rule 10b5-1 trading plan adopted August 15, 2025. 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.