InsidersTradesSigma
Total declarations
Companies
▲ Purchases (0 ops.)
▼ Sales (0 ops.)
Insider track record
CEODisclosed buys
0
Disclosed sells
0
T+90 hit rate
50%
T+90 mean return
+4.5%
Across 2 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Browse the detailed record of transactions filed by Heaton Michael R, Président. Officer active across 3 companies, notably MARKEL CORP. Cumulatively, 21 disclosures have been recorded. History available since 7 December 2021. The latest transaction was filed on 1 April 2026 (Attribution). Regulator: SEC (Form 4). All data is accessible without signup.
Companies and markets linked to Heaton Michael R
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations21 total
11,871 shares0Class A Common StockSEC:0001628280-26-023581:0
217.382 shares@ US$2,060.8334.0% of flowCommon StockSEC:0001751668-25-000003:0
10,230 shares0Class A Common StockSEC:0001840776-25-000192:0
87.704 shares@ US$1,710.3017.9% of flowCommon StockSEC:0001096343-25-000072:0
1,015.33 shares0Common StockSEC:0001096343-25-000018:0
32.006 shares@ US$1,562.216.4% of flowCommon StockSEC:0001096343-24-000140:0
155 shares@ US$1,759.0434.6% of flowCommon StockSEC:0001096343-24-000139:0
35.668 shares@ US$1,401.826.0% of flowCommon StockSEC:0001096343-24-000114:0
16.57 shares@ US$1,282.462.6% of flowCommon StockSEC:0001096343-24-000094:0
31 shares@ US$1,461.505.6% of flowCommon StockSEC:0001096343-24-000039:0
315 shares0Common StockSEC:0001096343-24-000031:0
800 shares0Common StockSEC:0001096343-24-000019:0
132 shares@ US$1,401.2922.8% of flowCommon StockSEC:0001096343-23-000216:0
2.994 shares@ US$1,369.2812.5% of flowCommon StockSEC:0001096343-23-000194:0
6.095 shares@ US$1,345.451.0% of flowCommon StockSEC:0001096343-23-000175:0
19.283 shares@ US$1,101.992.6% of flowCommon StockSEC:0001096343-23-000167:0
368 shares0Common StockSEC:0001096343-23-000097:0
482 shares0Common StockSEC:0001096343-23-000026:0
115 shares@ US$1,315.3447.1% of flowCommon StockSEC:0001096343-22-000158:0
342 shares0Common StockSEC:0001096343-22-000035:0
73 shares@ US$1,249.500.0003% mcap50.0% of flowCommon StockSEC:0001096343-21-000189:0
21 of 21 declarations
About Heaton Michael R
Michael R. Heaton is President of Markel Ventures at Markel Corp. He oversees investments and the strategic development of Markel's activities, focusing on innovation and growth. Heaton plays a crucial role in managing the company's investment portfolio.
