InsidersTradesSigma
Total declarations
Companies
▲ Purchases (6 ops.)
▼ Sales (0 ops.)
Insider track record
CEODisclosed buys
6
Disclosed sells
0
T+90 hit rate
60%
T+90 mean return
+0.0%
Across 5 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Explore the full record of transactions filed by Zagorski Mark, Chairman & CEO. Insider active across 2 companies, notably DoubleVerify Holdings, Inc.. Aggregated, 48 filings have been published. Split: 6 buys · 0 sell. Total volume traded: €502k. Activity tracked since 21 July 2021. The latest transaction was disclosed on 31 March 2026 (Retenue fiscale). Regulator: SEC (Form 4). The full history is accessible without signup.
Declarations48 total
13,476 sharesCommon StockSEC:0001819928-26-000089:0
7,453 sharesCommon StockSEC:0001819928-26-000089:1
22,919 sharesCommon StockSEC:0001819928-26-000083:0
12,675 sharesCommon StockSEC:0001819928-26-000083:1
12,122 sharesCommon StockSEC:0001819928-26-000083:2
6,704 sharesCommon StockSEC:0001819928-26-000083:3
15,219 sharesCommon StockSEC:0001819928-26-000083:4
8,417 sharesCommon StockSEC:0001819928-26-000083:5
2,757 sharesCommon StockSEC:0001819928-26-000083:6
1,525 sharesCommon StockSEC:0001819928-26-000083:7
7,802 sharesCommon StockSEC:0001819928-26-000083:8
4,315 sharesCommon StockSEC:0001819928-26-000083:9
13,476 shares0Common StockSEC:0001819928-26-000040:0
7,453 shares@ US$9.5011.1% of flowCommon StockSEC:0001819928-26-000040:1
22,919 shares0Common StockSEC:0001819928-26-000031:0
100 shares@ US$8.96Common StockSEC:0001819928-25-000034:0
15,219 shares0Common StockSEC:0001819928-25-000011:0
1,141 shares@ US$11.682.1% of flowCommon StockSEC:0000950170-25-087389:0
Ideal exit: 25 Feb 2026 (T+270)
20,000 shares0Common StockSEC:0001454938-25-000115:0
13,782 shares0Common StockSEC:0000950170-25-040534:0
705 shares@ US$15.302.1% of flowCommon StockSEC:0000950170-24-137221:0
Ideal exit: 27 Aug 2025 (T+270)
10,416 shares0Common StockSEC:0000950170-24-111407:0
6,471 shares0Common StockSEC:0000950170-24-107263:0
10,416 shares0Common StockSEC:0000950170-24-080423:0
712 shares@ US$15.472.1% of flowCommon StockSEC:0000950170-24-074820:0
Ideal exit: 25 Feb 2025 (T+270)
25 of 48 declarations
About Zagorski Mark
Mark Zagorski is the Chief Executive Officer of DoubleVerify Holdings, Inc. He oversees the company's operations and leads strategic initiatives to strengthen its market position.
