Mark Zagorski

Business address
C/O Doubleverify Holdings, 28 Crosby St, 6 Th Floor, New York, NY, 10013
Top holdings (ownership)
DV and OB
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Mark Zagorski has filed 52 SEC EDGAR filings since 12 Jul 2017

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing PRIMARY DOCUMENT 17 Dec 2025 30 Nov 2025 001-40349
4 Open Document Open Filing PRIMARY DOCUMENT 17 Sep 2025 15 Sep 2025 001-40349
4 Open Document Open Filing 4 21 Aug 2025 19 Aug 2025 001-40349
4 Open Document Open Filing 4 17 Jun 2025 15 Jun 2025 001-40349
4 Open Document Open Filing FORM 4 09 Jun 2025 05 Jun 2025 001-40643
4 Open Document Open Filing 4 17 Mar 2025 13 Mar 2025 001-40349
4 Open Document Open Filing 4 10 Mar 2025 06 Mar 2025 001-40349
4 Open Document Open Filing 4 17 Dec 2024 15 Dec 2024 001-40349
4 Open Document Open Filing 4 02 Oct 2024 30 Sep 2024 001-40349
4 Open Document Open Filing 4 17 Sep 2024 15 Sep 2024 001-40349
4 Open Document Open Filing 4 02 Jul 2024 30 Jun 2024 001-40349
4 Open Document Open Filing 4 18 Jun 2024 15 Jun 2024 001-40349
4 Open Document Open Filing FORM 4 26 Apr 2024 25 Apr 2024 001-40643
3 Open Document Open Filing FORM 3 26 Apr 2024 25 Apr 2024 001-40643
4 Open Document Open Filing FORM 4 SUBMISSION 02 Apr 2024 31 Mar 2024 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 19 Mar 2024 15 Mar 2024 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 03 Jan 2024 31 Dec 2023 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 21 Dec 2023 19 Dec 2023 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 19 Dec 2023 15 Dec 2023 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 03 Oct 2023 30 Sep 2023 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 21 Sep 2023 19 Sep 2023 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 19 Sep 2023 15 Sep 2023 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 05 Jul 2023 30 Jun 2023 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 20 Jun 2023 15 Jun 2023 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 04 Apr 2023 31 Mar 2023 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 17 Mar 2023 15 Mar 2023 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 04 Jan 2023 31 Dec 2022 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 19 Dec 2022 15 Dec 2022 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 14 Dec 2022 12 Dec 2022 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 04 Oct 2022 30 Sep 2022 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 19 Sep 2022 15 Sep 2022 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 05 Jul 2022 30 Jun 2022 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 17 Jun 2022 15 Jun 2022 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 31 Mar 2022 29 Mar 2022 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 17 Mar 2022 15 Mar 2022 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 14 Dec 2021 10 Dec 2021 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 22 Jul 2021 21 Jul 2021 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 10 May 2021 20 Apr 2021 001-40349
3 Open Document Open Filing FORM 3 SUBMISSION 20 Apr 2021 20 Apr 2021 001-40349
4 Open Document Open Filing FORM 4 SUBMISSION 03 Apr 2020 01 Apr 2020 001-36384
3 Open Document Open Filing FORM 3 SUBMISSION 03 Apr 2020 01 Apr 2020 001-36384
4 Open Document Open Filing FORM 4 SUBMISSION 03 Apr 2020 01 Apr 2020 001-35982
4 Open Document Open Filing FORM 4 SUBMISSION 19 Feb 2020 14 Feb 2020 001-35982
4 Open Document Open Filing FORM 4 SUBMISSION 12 Jul 2019 10 Jul 2019 001-35982
4 Open Document Open Filing FORM 4 SUBMISSION 04 Mar 2019 28 Feb 2019 001-35982
4 Open Document Open Filing FORM 4 SUBMISSION 26 Feb 2019 14 Feb 2019 001-35982
4 Open Document Open Filing FORM 4 SUBMISSION 12 Jul 2018 10 Jul 2018 001-35982
4 Open Document Open Filing FORM 4 SUBMISSION 01 Mar 2018 27 Feb 2018 001-35982
4 Open Document Open Filing FORM 4 SUBMISSION 20 Nov 2017 17 Nov 2017 001-35982
4 Open Document Open Filing FORM 4 SUBMISSION 15 Aug 2017 11 Aug 2017 001-35982
4 Open Document Open Filing FORM 4 SUBMISSION 12 Jul 2017 10 Jul 2017 001-35982
3 Open Document Open Filing FORM 3 SUBMISSION 12 Jul 2017 10 Jul 2017 001-35982