Skip to contentCostanzo Brian J. — MARKEL CORP insider: 25 transactions · InsiderLensCostanzo Brian J.
- Chief Financial Officer at MARKEL CORP · on record since Aug 23, 2021
Insider trading activity of Costanzo Brian J.
- Transactions on record
- 25
- since Feb 17, 2022
- Open-market buys
- 0
- Open-market sells
- 0
- Companies traded
- 1
- last filing May 19, 2026
Figures computed from official regulatory filings — methodology.
Companies where Costanzo Brian J. has traded
Track record of Costanzo Brian J.
Insufficient history for a statistical track record (fewer than 5 open-market buys).
Transaction history of Costanzo Brian J.
Co-insiders of Costanzo Brian J.
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Crowley Michael FMARKEL CORP
| Company | Filed | Type | Qty | Price | Value · USD | Src |
|---|
| May 19, 2026 | Other | 30.13 | 1,659.60 USD | $50K | SEC |
| May 19, 2026 | Other | -13.08 | 1,844.00 USD | $24.1K | SEC |
| Apr 15, 2026 | Other | 1.84 | 1,626.96 USD | $3K | SEC |
| Feb 26, 2026 | Award | 654.64 | 0.00 USD | $0 | SEC |
| Jan 20, 2026 | Other | 2.18 | 1,602.62 USD | $3.5K | SEC |
| Dec 3, 2025 | Other | -21.72 | 2,060.83 USD | $44.8K | SEC |
| Oct 16, 2025 | Other | 1.85 | 1,624.66 USD | $3K | SEC |
| Jul 16, 2025 | Other | 2.21 | 1,580.87 USD | $3.5K | SEC |
| Apr 17, 2025 | Other | 2.06 | 1,459.76 USD | $3K | SEC |
| Feb 20, 2025 | Award | 379.41 | 0.00 USD | $0 | SEC |
| Jan 17, 2025 | Other | 2.09 | 1,336.81 USD | $2.8K | SEC |
| Dec 9, 2024 | Other | -21 | 1,759.04 USD | $36.9K | SEC |
| Oct 16, 2024 | Other | 1.8 | 1,333.29 USD | $2.4K | SEC |
| Jul 17, 2024 | Other | 2.18 | 1,282.46 USD | $2.8K | SEC |
| Apr 18, 2024 | Other | 1.97 | 1,220.99 USD | $2.4K | SEC |
| Feb 27, 2024 | Award | 108 | 0.00 USD | $0 | SEC |
| Feb 22, 2024 | Award | 94 | 0.00 USD | $0 | SEC |
| Jan 17, 2024 | Other | 2.32 | 1,206.92 USD | $2.8K | SEC |
| Dec 6, 2023 | Other | -15 | 1,401.29 USD | $21K | SEC |
| Oct 17, 2023 | Other | 2.06 | 1,164.51 USD | $2.4K | SEC |
| Jul 14, 2023 | Other | 1.37 | 1,101.99 USD | $1.5K | SEC |
| May 18, 2023 | Award | 29 | 0.00 USD | $0 | SEC |
| Apr 28, 2023 | Other | 1.19 | 1,085.80 USD | $1.3K | SEC |
| Feb 15, 2023 | Award | 54 | 0.00 USD | $0 | SEC |
| Feb 17, 2022 | Award | 69 | 0.00 USD | $0 | SEC |