Brian J. Costanzo Markel Corp (MKL) insider trading activity

Brian J. Costanzo is Chief Financial Officer of MARKEL CORP. Currently has a direct ownership of 972 shares of MKL, which is worth approximately $1.82 Million. The most recent transaction as insider was on Mar 31, 2025, when has been sold 2 shares (Common Stock) at a price of $1459.76 per share, resulting in proceeds of $2,919. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 972

64.75% 3M change

60.66% 12M change

Total Value Held $1.82 Million

Brian J. Costanzo Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Mar 31 2025	BUY Other acquisition or disposition	$2,919 $1459.76 p/Share	2 Added 0.21%	972 Common Stock
Feb 18 2025	BUY Grant, award, or other acquisition	-	379 Added 28.12%	969 Common Stock
Dec 31 2024	BUY Other acquisition or disposition	$2,673 $1336.81 p/Share	2 Added 0.34%	590 Common Stock
Dec 05 2024	SELL Payment of exercise price or tax liability	$36,939 $1759.04 p/Share	21 Reduced 3.45%	588 Common Stock
Sep 30 2024	BUY Other acquisition or disposition	$1,333 $1333.29 p/Share	1 Added 0.16%	609 Common Stock
Jun 28 2024	BUY Other acquisition or disposition	$2,564 $1282.46 p/Share	2 Added 0.33%	607 Common Stock
Mar 28 2024	BUY Other acquisition or disposition	$1,220 $1220.99 p/Share	1 Added 0.17%	605 Common Stock
Feb 20 2024	BUY Grant, award, or other acquisition	-	108 Added 15.19%	603 Common Stock
Feb 20 2024	BUY Grant, award, or other acquisition	-	94 Added 15.96%	495 Common Stock
Dec 29 2023	BUY Other acquisition or disposition	$2,413 $1206.92 p/Share	2 Added 0.5%	401 Common Stock
Dec 05 2023	SELL Payment of exercise price or tax liability	$21,019 $1401.29 p/Share	15 Reduced 3.62%	399 Common Stock
Sep 29 2023	BUY Other acquisition or disposition	$2,329 $1164.51 p/Share	2 Added 0.48%	414 Common Stock
Jun 30 2023	BUY Other acquisition or disposition	$1,101 $1101.99 p/Share	1 Added 0.24%	412 Common Stock
May 16 2023	BUY Grant, award, or other acquisition	-	29 Added 6.61%	410 Common Stock
Mar 31 2023	BUY Other acquisition or disposition	$1,085 $1085.8 p/Share	1 Added 0.26%	381 Common Stock
Feb 14 2023	BUY Grant, award, or other acquisition	-	54 Added 12.44%	380 Common Stock
Feb 15 2022	BUY Grant, award, or other acquisition	-	69 Added 17.65%	322 Common Stock

BJC

Brian J. Costanzo

Chief Financial Officer

Glen Allen, VA

Institutional Portfolio Updates

Receive a notification when an Institution or Guru buys or sells MKL shares.

Notify only if

Value

Insider Trading

Get notified when an Markel Corp insider buys or sells MKL shares.

Notify only if

Operation

Value

Type

News

Receive news related to MARKEL CORP

Track Activities on MKL

Account