Insider NameBuy/SellCompany NameTickerAmountShares Change
Feb 07, 2025Feb 07, 2025Gayner Thomas Sinnickson
CEO
BuyMarkel Group Inc.MKL$2008.01$200,801+0.18%
Nov 01, 2024Nov 05, 2024Gayner Thomas Sinnickson
CEO
BuyMarkel Group Inc.MKL$1549.72$154,972+0.18%
Sep 12, 2024Sep 13, 2024Gayner Thomas Sinnickson
Dir
BuyGraham Holdings CoGHC$743.3$74,330+1.67%
Feb 02, 2024Feb 05, 2024Gayner Thomas Sinnickson
CEO
BuyMarkel Group Inc.MKL$1414.74$141,474+0.20%
Nov 09, 2023Nov 09, 2023Gayner Thomas Sinnickson
Dir
BuyGraham Holdings CoGHC$607.24$60,724+1.69%
Nov 03, 2023Nov 06, 2023Gayner Thomas Sinnickson
CEO
BuyMarkel Group Inc.MKL$1311.92$131,192+0.20%
Sep 08, 2023Sep 12, 2023Gayner Thomas Sinnickson
Dir
BuyGraham Holdings CoGHC$569.83$56,983+1.72%
Aug 04, 2023Aug 07, 2023Gayner Thomas Sinnickson
CEO
BuyMarkel Group Inc.MKL$1479.47$147,947+0.20%
May 09, 2023May 09, 2023Gayner Thomas Sinnickson
Dir
BuyGraham Holdings CoGHC$581.63$58,163+1.75%
May 02, 2023May 03, 2023Gayner Thomas Sinnickson
CEO
BuyMarkel CorpMKL$1359.93$67,997+0.10%
Mar 06, 2023Mar 07, 2023Gayner Thomas Sinnickson
Dir
BuyCable One, Inc.CABO$709.3$70,930+0.34%
Feb 03, 2023Feb 06, 2023Gayner Thomas Sinnickson
CEO
BuyMarkel CorpMKL$1317.18$32,930+0.05%
Nov 14, 2022Nov 15, 2022Gayner Thomas Sinnickson
Dir
BuyCable One, Inc.CABO$714.72$4M+14.70%
Nov 08, 2022Nov 10, 2022Gayner Thomas Sinnickson
Dir
BuyCable One, Inc.CABO$656.86$7M+29.40%
Nov 08, 2022Nov 09, 2022Gayner Thomas Sinnickson
Co-CEO
BuyMarkel CorpMKL$1230.6$61,530+0.11%
Sep 16, 2022Sep 16, 2022Gayner Thomas Sinnickson
Dir
BuyGraham Holdings CoGHC$556.15$55,615+1.79%
Sep 12, 2022Sep 13, 2022Gayner Thomas Sinnickson
Dir
BuyCable One, Inc.CABO$1094.74$547,370+3.44%
Sep 06, 2022Sep 07, 2022Gayner Thomas Sinnickson
Dir
BuyCable One, Inc.CABO$1106.44$553,220+3.57%
Aug 29, 2022Aug 31, 2022Gayner Thomas Sinnickson
Dir
BuyCable One, Inc.CABO$1177.75$588,875+3.70%
Aug 24, 2022Aug 25, 2022Gayner Thomas Sinnickson
Dir
BuyCable One, Inc.CABO$1225$61,250+0.40%
Aug 04, 2022Aug 05, 2022Gayner Thomas Sinnickson
Co-CEO
BuyMarkel CorpMKL$1202.46$60,123+0.11%
Jun 01, 2022Jun 03, 2022Gayner Thomas Sinnickson
Dir
BuyCable One, Inc.CABO$1291.17$6M+28.62%
May 25, 2022May 27, 2022Gayner Thomas Sinnickson
Dir
BuyCable One, Inc.CABO$1257.97$62,899+0.66%
May 09, 2022May 09, 2022Gayner Thomas Sinnickson
Co-CEO
BuyMarkel CorpMKL$1306$65,300+0.11%
Nov 22, 2021Nov 23, 2021Gayner Thomas Sinnickson
Co-CEO
BuyMarkel CorpMKL$1251.3$31,283+0.06%
Nov 11, 2021Nov 15, 2021Gayner Thomas Sinnickson
Dir
BuyGraham Holdings CoGHC$595.17$59,517+1.82%
Feb 16, 2016Feb 18, 2016Gayner Thomas Sinnickson
Co-CEO
SellMarkel CorpMKL$826.03$4M-11.22%
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