SEC Form 4 · accession 0001819928-26-000096
DoubleVerify Holdings, Inc. · DV
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Mark Zagorski
Officer — Chief Executive Officer · Director
Period of report
Sep 15, 2026
Accepted (ET)
Sep 17, 2026 · 4:08 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001819928
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1 | Sep 15, 2026 | M | 22,919 | $0.00 | A | 603,283 | D | |
| Common Stock | Sep 15, 2026 | F | 11,701 | $13.50 | D | 591,582 | D | |
| Common StockF3 | Sep 15, 2026 | M | 12,122 | $0.00 | A | 603,704 | D | |
| Common Stock | Sep 15, 2026 | F | 6,189 | $13.50 | D | 597,515 | D | |
| Common StockF5 | Sep 15, 2026 | M | 15,219 | $0.00 | A | 612,734 | D | |
| Common Stock | Sep 15, 2026 | F | 7,770 | $13.50 | D | 604,964 | D | |
| Common StockF6 | Sep 15, 2026 | M | 2,757 | $0.00 | A | 607,721 | D | |
| Common Stock | Sep 15, 2026 | F | 1,408 | $13.50 | D | 606,313 | D | |
| Common StockF7 | Sep 15, 2026 | M | 7,802 | $0.00 | A | 614,115 | D | |
| Common Stock | Sep 15, 2026 | F | 3,983 | $13.50 | D | 610,132 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Stock UnitsF8,F1 | — | Sep 15, 2026 | M | 22,919 | D | — | — | Common Stock | 22,919 | 206,243 | D |
| Performance Stock UnitsF9,F3 | — | Sep 15, 2026 | M | 12,122 | D | — | — | Common Stock | 12,122 | 60,605 | D |
| Restricted Stock UnitsF8,F5 | — | Sep 15, 2026 | M | 15,219 | D | — | — | Common Stock | 15,219 | 136,971 | D |
| Performance Stock UnitsF9,F6 | — | Sep 15, 2026 | M | 2,757 | D | — | — | Common Stock | 2,757 | 2,757 | D |
| Restricted Stock UnitsF8,F7 | — | Sep 15, 2026 | M | 7,802 | D | — | — | Common Stock | 7,802 | 39,005 | D |
| Restricted Stock UnitsF10,F8,F11 | — | Sep 15, 2026 | M | 9,375 | D | — | — | Common Stock | 9,375 | 9,375 | D |
Explanation of responses
- F1Each restricted stock unit was granted on March 12, 2026. 8.33% of the restricted stock units vested and were settled on March 15, 2026 (the "2026 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 8.33% on each quarterly anniversary of the 2026 Vesting Date.
- F10As reported previously, vested shares will be delivered to the reporting person as soon as administratively feasible following his separation from service with the Issuer.
- F11Each restricted stock unit was granted on December 12, 2022. 6.25% of the restricted stock units vested on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.
- F2Represents shares withheld to satisfy tax withholding obligations in connection with the vesting of restricted stock units.
- F3Each performance stock unit was granted on March 13, 2025. 41.67% of the earned shares vested and were settled on the 2026 Vesting Date, and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2026 Vesting Date.
- F4Represents shares withheld to satisfy tax withholding obligations in connection with the vesting of performance stock units.
- F5Each restricted stock unit was granted on March 13, 2025. 6.25% of the restricted stock units vested and were settled on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.
- F6Each performance stock unit was granted on December 19, 2023. 41.67% of the earned shares vested and were settled on the 2025 Vesting Date, and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.
- F7Each restricted stock unit was granted on December 19, 2023. 6.25% of the restricted stock units vested and were settled on March 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.
- F8Restricted stock units convert into common stock on a one-for-one basis.
- F9Performance stock units convert into common stock on a one-for-one basis.