Costanzo Brian J.
SEC insider (Form 3/4/5 filer). CIK 0001873434. Chief Financial Officer at MARKEL GROUP INC. (MKL). 15 reported Form 4/5 transactions since Sep 2024; latest on Sep 30, 2026. Located in GLEN ALLEN, VA.
Companies Costanzo Brian J. has filed insider reports for
- MARKEL GROUP INC. (MKL): Officer, Chief Financial Officer
Costanzo Brian J.
CIK: 0001873434
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
MARKEL GROUP INC.
Discretionary Trading P&L
Holdings
Transaction History (15 total)
- Sep 30, 2026MKL
MARKEL GROUP INC.
OtherDirect2 shares at avg. $1455.58$3K - Jun 30, 2026MKL
MARKEL GROUP INC.
OtherDirect2 shares at avg. $1617.19$3K - May 15, 2026MKL
MARKEL GROUP INC.
Tax PaymentDirect13 shares at avg. $1844.00$24K - May 15, 2026MKL
MARKEL GROUP INC.
OtherDirect30 shares at avg. $1659.60$50K - Mar 31, 2026MKL
MARKEL GROUP INC.
OtherDirect2 shares at avg. $1626.96$3K - Feb 24, 2026MKL
MARKEL GROUP INC.
AwardDirect655 shares- - Dec 31, 2025MKL
MARKEL GROUP INC.
OtherDirect2 shares at avg. $1602.62$4K - Dec 2, 2025MKL
MARKEL GROUP INC.
Tax PaymentDirect22 shares at avg. $2060.83$45K - Sep 30, 2025MKL
MARKEL GROUP INC.
OtherDirect2 shares at avg. $1624.66$3K - Jun 30, 2025MKL
MARKEL GROUP INC.
OtherDirect2 shares at avg. $1580.87$4K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 30, 2026 | MKL MARKEL GROUP INC. | Other | 2 | $1455.58 | $3,000 | Direct |
| Jun 30, 2026 | MKL MARKEL GROUP INC. | Other | 2 | $1617.19 | $3,500 | Direct |
| May 15, 2026 | MKL MARKEL GROUP INC. | Tax Payment | 13 | $1844.00 | $24,120 | Direct |
| May 15, 2026 | MKL MARKEL GROUP INC. | Other | 30 | $1659.60 | $50,000 | Direct |
| Mar 31, 2026 | MKL MARKEL GROUP INC. | Other | 2 | $1626.96 | $3,000 | Direct |
| Feb 24, 2026 | MKL MARKEL GROUP INC. | Award | 655 | - | $0 | Direct |
| Dec 31, 2025 | MKL MARKEL GROUP INC. | Other | 2 | $1602.62 | $3,500 | Direct |
| Dec 2, 2025 | MKL MARKEL GROUP INC. | Tax Payment | 22 | $2060.83 | $44,767 | Direct |
| Sep 30, 2025 | MKL MARKEL GROUP INC. | Other | 2 | $1624.66 | $2,999 | Direct |
| Jun 30, 2025 | MKL MARKEL GROUP INC. | Other | 2 | $1580.87 | $3,500 | Direct |
1-10 of 15 transactions