GAYNER THOMAS SINNICKSON
SEC insider (Form 3/4/5 filer). CIK 0001159015. Chief Executive Officer at MARKEL GROUP INC. (MKL) and 2 other issuers. 10 reported Form 4/5 transactions since Sep 2024; latest on May 15, 2026. Located in ATLANTA, GA.
Companies GAYNER THOMAS SINNICKSON has filed insider reports for
- MARKEL GROUP INC. (MKL): Director, Officer, Chief Executive Officer
- COCA COLA CO (KO): Director
- Graham Holdings Co (GHC): Director
GAYNER THOMAS SINNICKSON
CIK: 0001159015
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (10 total)
- May 15, 2026MKL
MARKEL GROUP INC.
Tax PaymentDirect482 shares at avg. $1844.00$888K - Apr 1, 2026KO
COCA COLA CO
AwardDirectPhantom Share Units
3.8K shares at avg. $75.81- - Feb 24, 2026MKL
MARKEL GROUP INC.
AwardDirect4.5K shares- - Dec 2, 2025MKL
MARKEL GROUP INC.
Tax PaymentDirect37 shares at avg. $2060.83$75K - Apr 1, 2025KO
COCA COLA CO
AwardDirectPhantom Share Units
4.1K shares at avg. $71.55- - Feb 18, 2025MKL
MARKEL GROUP INC.
AwardDirect3.3K shares- - Feb 7, 2025MKL
MARKEL GROUP INC.
PurchaseDirect100 shares at avg. $2008.01$201K - Dec 5, 2024MKL
MARKEL GROUP INC.
Tax PaymentDirect45 shares at avg. $1759.04$79K - Nov 1, 2024MKL
MARKEL GROUP INC.
PurchaseDirect100 shares at avg. $1549.72$155K - Sep 12, 2024GHC
Graham Holdings Co
PurchaseDirect100 shares at avg. $743.30$74K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| May 15, 2026 |  MKL MARKEL GROUP INC. | Tax Payment | 482 | $1844.00 | $888,196 | Direct |
| Apr 1, 2026 |  KO COCA COLA CO | Award Phantom Share Units | 3,825 | $75.81 | - | Direct |
| Feb 24, 2026 | MKL MARKEL GROUP INC. | Award | 4,484 | - | $0 | Direct |
| Dec 2, 2025 | MKL MARKEL GROUP INC. | Tax Payment | 37 | $2060.83 | $75,453 | Direct |
| Apr 1, 2025 | KO COCA COLA CO | Award Phantom Share Units | 4,053 | $71.55 | - | Direct |
| Feb 18, 2025 | MKL MARKEL GROUP INC. | Award | 3,350 | - | - | Direct |
| Feb 7, 2025 | MKL MARKEL GROUP INC. | Purchase | 100 | $2008.01 | $200,801 | Direct |
| Dec 5, 2024 | MKL MARKEL GROUP INC. | Tax Payment | 45 | $1759.04 | $79,157 | Direct |
| Nov 1, 2024 | MKL MARKEL GROUP INC. | Purchase | 100 | $1549.72 | $154,972 | Direct |
| Sep 12, 2024 |  GHC Graham Holdings Co | Purchase | 100 | $743.30 | $74,330 | Direct |
1-10 of 10 transactions