SEC CIK 1873434
Costanzo Brian J.
Reported ownership across 1 company, sourced from SEC Form 4 filings and updated daily.
Current Positions
| Company | Shares Owned | As Of |
|---|---|---|
| MKLview stock → | 1,634.3 | 2026-09-30 |
Position History — MKL
Reported shares owned immediately after each Form 4 transaction, over time.
Recent Filings — MKL
| Date | Activity | Shares | Price | Owned After |
|---|---|---|---|---|
| 2026-09-30 | J | 2.061 | $1455.58 | 1,634.3 |
| 2026-06-30 | J | 2.164 | $1617.19 | 1,632.239 |
| 2026-05-15 | J | 30.128 | $1659.60 | 1,630.075 |
| 2026-05-15 | Tax withholding | 13.08 | $1844.00 | 1,599.948 |
| 2026-03-31 | J | 1.844 | $1626.96 | 1,613.028 |
| 2026-02-24 | Grant / award | 654.641 | $0.00 | 1,611.184 |
| 2025-12-31 | J | 2.184 | $1602.62 | 956.543 |
| 2025-12-02 | Tax withholding | 21.72 | $2060.83 | 954.36 |
| 2025-09-30 | J | 1.85 | $1624.66 | 976.08 |
| 2025-06-30 | J | 2.21 | $1580.87 | 974.24 |
| 2025-03-31 | J | 2.06 | $1459.76 | 972.02 |
| 2025-02-18 | Grant / award | 379.41 | $0.00 | 969.97 |
| 2024-12-31 | J | 2.09 | $1336.81 | 590.55 |
| 2024-12-05 | Tax withholding | 21 | $1759.04 | 588.46 |
| 2024-09-30 | J | 1.8 | $1333.29 | 609.46 |
| 2024-06-28 | J | 2.18 | $1282.46 | 607.66 |
| 2024-03-28 | J | 1.97 | $1220.99 | 605.48 |
| 2024-02-20 | Grant / award | 94 | $0.00 | 495.51 |
| 2024-02-20 | Grant / award | 108 | $0.00 | 603.51 |
| 2023-12-29 | J | 2.32 | $1206.92 | 401.51 |
| 2023-12-05 | Tax withholding | 15 | $1401.29 | 399.19 |
| 2023-09-29 | J | 2.06 | $1164.51 | 414.19 |
| 2023-06-30 | J | 1.37 | $1101.99 | 412.13 |
| 2023-05-16 | Grant / award | 29 | $0.00 | 410.76 |
| 2023-03-31 | J | 1.19 | $1085.80 | 381.76 |
| 2023-02-14 | Grant / award | 54 | $0.00 | 380.58 |
| 2022-02-15 | Grant / award | 69 | $0.00 | 322.01 |
| 2021-08-18 | — | — | — | 181.48 |
| 2021-08-18 | — | — | — | 249.53 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.