Costanzo Brian J. 4

What Happened
Brian J. Costanzo, Chief Financial Officer of Markel Group Inc. (MKL), was awarded 654.641 restricted stock units (RSUs) on February 24, 2026. The award is reported as an acquisition at $0.00 (i.e., a grant rather than a purchase) and therefore has no immediate cash cost shown in the filing. Per the filing, 539.739 of the RSUs vest on December 31, 2028, and the remaining 114.902 RSUs vest on February 24, 2029.

Key Details

• Transaction date: 2026-02-24; transaction type: Award/Grant (code A); price reported: $0.00.
• Shares/units granted: 654.641 RSUs in total (539.739 vest 12/31/2028; 114.902 vest 02/24/2029).
• Shares owned after transaction: Not disclosed in this filing.
• Footnotes: F1 describes the RSUs granted under the MKL 2024 Equity Incentive Compensation Plan with the vesting schedule above. F2 notes certain information is based on the MKL 401(k) plan balance as of 12/31/2025.
• Filing timing: Form 4 was filed on 2026-02-26 for the 2026-02-24 grant (file appears timely; Form 4s are generally due within two business days).

Context
RSU grants are compensation awards that convert to shares only after vesting; they are not an immediate purchase or sale and do not by themselves indicate immediate buying or selling activity. For retail investors, such awards are routine executive compensation and should be viewed as part of overall insider ownership and company incentive structure rather than a direct market signal.