SEC Insider Transactions from GAYNER THOMAS SINNICKSON.

Last updated: 2026-04-03 19:05 UTC | Total transactions: 13

GAYNER THOMAS SINNICKSON has filed 13 insider transactions across 3 companies since February 2024.

Most recent transaction: a grant/award of 3825 shares of COCA COLA CO ($KO) on April 01, 2026.

Activity breakdown: 4 open-market purchases and 0 sales.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
April 1, 2026 COCA COLA CO $KO GAYNER THOMAS SINNICKSON Director A Phantom Share Units 3825 $75.81 15,232.3126 4,313,000,000 33.54% 0.00%
Feb. 24, 2026 MARKEL GROUP INC. $MKL GAYNER THOMAS SINNICKSON Chief Executive Officer A Common Stock 4484 $0.00 61,999.0634 12,687,000 7.80% 0.04%
Dec. 2, 2025 MARKEL GROUP INC. $MKL GAYNER THOMAS SINNICKSON Chief Executive Officer F Common Stock 37 $2060.83 57,515.4514 12,687,000 0.06% 0.00%
April 1, 2025 COCA COLA CO $KO GAYNER THOMAS SINNICKSON Director A Phantom Share Units 4053 $71.55 11,056.4739 4,320,000,000 57.87% 0.00%
Feb. 18, 2025 MARKEL GROUP INC. $MKL GAYNER THOMAS SINNICKSON Chief Executive Officer A Common Stock 3350 $0.00 57,534.7264 13,017,000 6.18% 0.03%
Feb. 7, 2025 MARKEL GROUP INC. $MKL GAYNER THOMAS SINNICKSON Chief Executive Officer P Common Stock 100 $2008.01 54,184.8974 13,017,000 0.18% 0.00%
Dec. 5, 2024 MARKEL GROUP INC. $MKL GAYNER THOMAS SINNICKSON Chief Executive Officer F Common Stock 45 $1759.04 54,084.4194 13,058,000 0.08% 0.00%
Nov. 1, 2024 MARKEL GROUP INC. $MKL GAYNER THOMAS SINNICKSON Chief Executive Officer P Common Stock 100 $1549.72 54,129.4194 13,058,000 0.19% 0.00%
Sept. 12, 2024 Graham Holdings Co $GHC GAYNER THOMAS SINNICKSON Director P Class B Common Stock 100 $743.30 5,900.0000 4,654,000 1.72% 0.00%
April 1, 2024 COCA COLA CO $KO GAYNER THOMAS SINNICKSON Director A Phantom Share Units 4756 $60.97 6,774.8620 4,339,000,000 235.65% 0.00%
Feb. 20, 2024 MARKEL GROUP INC. $MKL GAYNER THOMAS SINNICKSON Chief Executive Officer A Common Stock 1041 $0.00 54,008.4924 13,347,000 1.97% 0.01%
Feb. 20, 2024 MARKEL GROUP INC. $MKL GAYNER THOMAS SINNICKSON Chief Executive Officer A Common Stock 2710 $0.00 52,967.4924 13,347,000 5.39% 0.02%
Feb. 2, 2024 MARKEL GROUP INC. $MKL GAYNER THOMAS SINNICKSON Chief Executive Officer P Common Stock 100 $1414.74 50,257.4924 13,347,000 0.20% 0.00%