InsidersTradesSigma
Total declarations
Companies
▲ Purchases (6 ops.)
▼ Sales (0 ops.)
Insider track record
CEODisclosed buys
6
Disclosed sells
0
T+90 hit rate
0%
T+90 mean return
-3.6%
Across 1 buy signal 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, 49 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 (Levée d'options). Regulator: SEC (Form 4). The full history is accessible without signup.
Companies and markets linked to Zagorski Mark
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations49 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
13,476 shares0Common StockSEC:0001819928-26-000009:0
100 shares@ US$8.960.1% of flowCommon 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
Canonical exit: 29 Aug 2025 (T+90)
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
Canonical exit: 28 Feb 2025 (T+90)
10,416 shares0Common StockSEC:0000950170-24-111407:0
6,471 shares0Common StockSEC:0000950170-24-107263:0
10,416 shares0Common StockSEC:0000950170-24-080423:0
25 of 49 declarations
About Zagorski Mark
Zagorski Mark is Président-Directeur Général. He has 49 filings in total, and the recent filings observed cover the period from 2021-05-10 to 2026-07-01, with EUR 501507 of buys and EUR 0 of sells. His listed companies are DoubleVerify Holdings, Inc., where he is Chief Executive Officer, and Outbrain Inc., where he is Director, and the most frequent transaction nature is Levée d'options.
