Costanzo Brian J. Insider Trades

Insider Trading History

Track insider trading activity for Costanzo Brian J.. See latest buy and sell transactions across all companies.

Holdings

Company
Holding Value
Last Transaction
Sale/Purchase
Amount
Price
Current Price

Insider Trades History

Company
Holding Value
Last Transaction
Sale/Purchase
Amount
Price
Current Price
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $2.9M 1,630 shares
Last Trade
May 15, 2026 Purchase (Other)Another type of insider transaction reported on SEC Form 4.
$49.8k 30 shares
$1,659.60
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $2.84M 1,599 shares
Last Trade
May 15, 2026 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$24k 13 shares
$1,844.00
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $2.87M 1,613 shares
Last Trade
Mar 31, 2026 Purchase (Other)Another type of insider transaction reported on SEC Form 4.
$1.91k 1 shares
$1,914.07
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $2.86M 1,611 shares
Last Trade
Feb 24, 2026 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$1.35M 654 shares
$2,066.40
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $1.7M 956 shares
Last Trade
Dec 31, 2025 Purchase (Other)Another type of insider transaction reported on SEC Form 4.
$4.3k 2 shares
$2,149.65
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $1.7M 954 shares
Last Trade
Dec 02, 2025 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$43.3k 21 shares
$2,060.83
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $1.74M 976 shares
Last Trade
Sep 30, 2025 Purchase (Other)Another type of insider transaction reported on SEC Form 4.
$1.91k 1 shares
$1,911.36
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $1.73M 974 shares
Last Trade
Jun 30, 2025 Purchase (Other)Another type of insider transaction reported on SEC Form 4.
$3.99k 2 shares
$1,997.36
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $1.73M 972 shares
Last Trade
Mar 31, 2025 Purchase (Other)Another type of insider transaction reported on SEC Form 4.
$3.74k 2 shares
$1,869.61
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $1.72M 969 shares
Last Trade
Feb 18, 2025 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$709k 379 shares
$1,871.77
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $1.05M 590 shares
Last Trade
Dec 31, 2024 Purchase (Other)Another type of insider transaction reported on SEC Form 4.
$3.46k 2 shares
$1,729.23
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $1.05M 588 shares
Last Trade
Dec 05, 2024 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$36.9k 21 shares
$1,759.04
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $1.08M 609 shares
Last Trade
Sep 30, 2024 Purchase (Other)Another type of insider transaction reported on SEC Form 4.
$1.57k 1 shares
$1,568.58
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $1.08M 607 shares
Last Trade
Jun 28, 2024 Purchase (Other)Another type of insider transaction reported on SEC Form 4.
$3.15k 2 shares
$1,575.66
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $1.08M 605 shares
Last Trade
Mar 28, 2024 Purchase (Other)Another type of insider transaction reported on SEC Form 4.
$1.52k 1 shares
$1,521.48
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $1.07M 603 shares
Last Trade
Feb 20, 2024 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$157k 108 shares
$1,453.13
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $880k 495 shares
Last Trade
Feb 20, 2024 Purchase (Award)Shares received as a grant, bonus, or other company award rather than an open-market purchase.
$137k 94 shares
$1,453.13
$1,778.35
Markel Group
Markel Group MKL
Chief Financial Officer
Holding Value $713k 401 shares
Last Trade
Dec 29, 2023 Purchase (Other)Another type of insider transaction reported on SEC Form 4.
$2.84k 2 shares
$1,419.90
$1,778.35
Markel Group
Markel Group MKL
Svp, Finance, CAO & Controller
Holding Value $710k 399 shares
Last Trade
Dec 05, 2023 Sale (In-Kind)Shares used to pay exercise costs or tax withholding, or another in-kind transfer tied to compensation.
$21k 15 shares
$1,401.29
$1,778.35
Markel Group
Markel Group MKL
Svp, Finance, CAO & Controller
Holding Value $736k 414 shares
Last Trade
Sep 29, 2023 Purchase (Other)Another type of insider transaction reported on SEC Form 4.
$2.94k 2 shares
$1,472.49
$1,778.35

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