Gayner Thomas Sinnickson

Chief Executive Officer | Director | Co-chief Executive Officer

4 companies

Good

Trades Analyzed

12M Win Rate

63.0%

Avg 3M Return

+0.4%

Avg 12M Return

-0.8%

Gayner Thomas Sinnickson is a Director at ENOV with holdings across 4 companies. Recent SEC Form 4 filings include 10 buys and 0 sells.

Estimated insider holdings value: $104.8M based on current market prices.

Holdings by Company

ENOVDec 31, 2021

Current Shares65.1K

Value$1.77M

Net Activity0

Bought: 0Sold: 0

MKLFeb 24, 2026

Current Shares56.7K

Value$102.13M

Net Activity+750

Bought: 750Sold: 0

CABOMar 10, 2023

Current Shares2.4K

Value$147.1K

Net Activity+21.7K

Bought: 21.7KSold: 0

GHCSep 12, 2024

Current Shares700

Value$791.8K

Net Activity+600

Bought: 600Sold: 0

Showing 10 filings

Date	Ticker	Role	Type	Shares	Price	Value	Chg%	3M	12M
Feb 7, 2025	MKL Markel Group Inc.	Chief Executive Officer	Buy	100	$2,008.01	$200,801.00	+0.2%	-7.2%	+3.7%
Nov 1, 2024	MKL Markel Group Inc.	Chief Executive Officer	Buy	100	$1,549.72	$154,972.00	+0.2%	+18.5%	+27.8%
Sep 12, 2024	GHC Graham Holdings Co	Director	Buy	100	$743.30	$74,330.00	+16.7%	+27.7%	+57.1%
Feb 2, 2024	MKL Markel Group Inc.	Chief Executive Officer	Buy	100	$1,414.74	$141,474.00	+0.2%	+11.6%	+29.5%
Nov 9, 2023	GHC Graham Holdings Co	Director	Buy	100	$607.24	$60,724.00	+20.0%	+15.5%	+58.6%
Nov 3, 2023	MKL Markel Group Inc.	Chief Executive Officer	Buy	100	$1,311.92	$131,192.00	+0.2%	+4.4%	+15.6%
Sep 8, 2023	GHC Graham Holdings Co	Director	Buy	100	$569.83	$56,983.00	+25.0%	+13.9%	+28.4%
Aug 4, 2023	MKL Markel Group Inc.	Chief Executive Officer	Buy	100	$1,479.47	$147,947.00	+0.2%	-11.3%	+6.4%
May 9, 2023	GHC Graham Holdings Co	Director	Buy	100	$581.63	$58,163.00	+1.8%	+3.8%	+30.7%
May 2, 2023	MKL Markel Group Inc.	Chief Executive Officer	Buy	50	$1,359.93	$67,996.50	+0.1%	+7.6%	+9.6%