Insiders / Zagorski Mark
Zagorski Mark
CIK 1709574personinsider
Companies
1
First seen
Jan 5, 2026
Last activity
Mar 16, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| DoubleVerify Holdings, Inc. · DV | 540,719 | — |
All securities held
3 positions · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| DoubleVerify Holdings, Inc. | Common Stock | 540,719 |
| DoubleVerify Holdings, Inc. | Restricted Stock UnitsDerivative | 28,125 |
| DoubleVerify Holdings, Inc. | Performance Stock UnitsDerivative | 8,271 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Mar 15, 2026 | Other | DV DoubleVerify Holdings, Inc. Common Stock | $342.2K | -34K -5.99% | 525,922 0.34% of shares | low |
| Mar 15, 2026 | Other | DV DoubleVerify Holdings, Inc. Common Stock | $129.4K | -13K -2.48% | 498,830 0.32% of shares | low |
| Dec 31, 2025 | Other | DV DoubleVerify Holdings, Inc. Common Stock | $85.3K | -7K -1.50% | 488,586 0.32% of shares | low |
| Mar 15, 2026 | Other | DV DoubleVerify Holdings, Inc. Common Stock | $68.7K | -7K -1.24% | 534,417 0.34% of shares | low |
| Mar 15, 2026 | Other | DV DoubleVerify Holdings, Inc. Common Stock | $32.1K | -3K -0.58% | 540,719 0.35% of shares | low |
| Mar 15, 2026 | Other | DV DoubleVerify Holdings, Inc. Common Stock | $11.4K | -1K -0.21% | 536,062 0.35% of shares | low |
| Mar 15, 2026 | Exercise | DV DoubleVerify Holdings, Inc. Common Stock | $0 | +8K +1.46% | 543,864 0.35% of shares | low |
| Mar 15, 2026 | Exercise | DV DoubleVerify Holdings, Inc. Common Stock | $0 | +3K +0.52% | 537,174 0.35% of shares | low |
| Mar 15, 2026 | Exercise | DV DoubleVerify Holdings, Inc. Common Stock | $0 | +15K +2.89% | 541,141 0.35% of shares | low |
| Mar 15, 2026 | Exercise | DV DoubleVerify Holdings, Inc. Common Stock | $0 | +61K +12.15% | 559,439 0.36% of shares | low |