DAVE SCHAEFFER

Business address
C/O Cogent Communications Holdings, Inc., 2450 N St Nw, 4 Th Floor, Washington, DC, 20037
Top holdings (ownership)
CCOI
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DAVE SCHAEFFER has filed 147 SEC EDGAR filings since 13 Mar 2002

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing 05 Jan 2026 31 Dec 2025 000-51829
4 Open Document Open Filing 11 Aug 2025 08 Aug 2025 000-51829
4 Open Document Open Filing 08 Aug 2025 07 Aug 2025 000-51829
144 Open Document Open Filing 16 Jun 2025
4 Open Document Open Filing 16 Jun 2025 16 Jun 2025 000-51829
144 Open Document Open Filing 16 Jun 2025
4 Open Document Open Filing 16 Jun 2025 13 Jun 2025 000-51829
144 Open Document Open Filing 13 Jun 2025
144 Open Document Open Filing 13 Jun 2025
144 Open Document Open Filing 12 Jun 2025
4 Open Document Open Filing 12 Jun 2025 12 Jun 2025 000-51829
144 Open Document Open Filing 12 Jun 2025
4 Open Document Open Filing 12 Jun 2025 11 Jun 2025 000-51829
144 Open Document Open Filing 11 Jun 2025
144 Open Document Open Filing 11 Jun 2025
4 Open Document Open Filing 10 Jun 2025 10 Jun 2025 000-51829
144 Open Document Open Filing 10 Jun 2025
144 Open Document Open Filing 10 Jun 2025
4 Open Document Open Filing 09 Jun 2025 09 Jun 2025 000-51829
144 Open Document Open Filing 09 Jun 2025
4 Open Document Open Filing 09 Jun 2025 06 Jun 2025 000-51829
144 Open Document Open Filing 09 Jun 2025
4 Open Document Open Filing 09 Jun 2025 05 Jun 2025 000-51829
144 Open Document Open Filing 06 Jun 2025
144 Open Document Open Filing 06 Jun 2025
4 Open Document Open Filing 05 Jun 2025 04 Jun 2025 000-51829
144 Open Document Open Filing 05 Jun 2025
144 Open Document Open Filing 05 Jun 2025
144 Open Document Open Filing 04 Jun 2025
4 Open Document Open Filing 04 Jun 2025 03 Jun 2025 000-51829
144 Open Document Open Filing 04 Jun 2025
144 Open Document Open Filing 03 Jun 2025
144 Open Document Open Filing 03 Jun 2025
4 Open Document Open Filing 03 Jun 2025 02 Jun 2025 000-51829
144 Open Document Open Filing 02 Jun 2025
144 Open Document Open Filing 02 Jun 2025
4 Open Document Open Filing 02 Jun 2025 30 May 2025 000-51829
144 Open Document Open Filing 30 May 2025
4 Open Document Open Filing 30 May 2025 29 May 2025 000-51829
144 Open Document Open Filing 29 May 2025
4 Open Document Open Filing 29 May 2025 28 May 2025 000-51829
144 Open Document Open Filing 28 May 2025
4 Open Document Open Filing 28 May 2025 27 May 2025 000-51829
144 Open Document Open Filing 27 May 2025
4 Open Document Open Filing 27 May 2025 23 May 2025 000-51829
144 Open Document Open Filing 23 May 2025
4 Open Document Open Filing 23 May 2025 22 May 2025 000-51829
144 Open Document Open Filing 22 May 2025
4 Open Document Open Filing 22 May 2025 21 May 2025 000-51829
144 Open Document Open Filing 21 May 2025
4 Open Document Open Filing 21 May 2025 20 May 2025 000-51829
144 Open Document Open Filing 20 May 2025
4 Open Document Open Filing 19 May 2025 16 May 2025 000-51829
144 Open Document Open Filing 16 May 2025
4 Open Document Open Filing 16 May 2025 15 May 2025 000-51829
144 Open Document Open Filing 15 May 2025
4 Open Document Open Filing 15 May 2025 14 May 2025 000-51829
4 Open Document Open Filing 14 May 2025 12 May 2025 000-51829
144 Open Document Open Filing 14 May 2025
144 Open Document Open Filing 12 May 2025
4 Open Document Open Filing 04 Apr 2025 04 Apr 2025 000-51829
144 Open Document Open Filing 14 Mar 2025
4 Open Document Open Filing 05 Mar 2025 04 Mar 2025 000-51829
144 Open Document Open Filing 04 Mar 2025
4 Open Document Open Filing 15 Jan 2025 14 Jan 2025 000-51829
4 Open Document Open Filing 17 Dec 2024 16 Dec 2024 000-51829
144 Open Document Open Filing 16 Dec 2024
4 Open Document Open Filing 27 Nov 2024 25 Nov 2024 000-51829
144 Open Document Open Filing 25 Nov 2024
4 Open Document Open Filing 11 Sep 2024 10 Sep 2024 000-51829
144 Open Document Open Filing 10 Sep 2024
4 Open Document Open Filing 28 Aug 2024 27 Aug 2024 000-51829
144 Open Document Open Filing 27 Aug 2024
4 Open Document Open Filing 17 Jun 2024 14 Jun 2024 000-51829
144 Open Document Open Filing 14 Jun 2024
4 Open Document Open Filing 13 Jun 2024 12 Jun 2024 000-51829
144 Open Document Open Filing 12 Jun 2024
4 Open Document Open Filing 14 May 2024 13 May 2024 000-51829
144 Open Document Open Filing 13 May 2024
4 Open Document Open Filing 01 Apr 2024 01 Apr 2024 000-51829
4 Open Document Open Filing 18 Mar 2024 15 Mar 2024 000-51829
4 Open Document Open Filing 15 Mar 2024 14 Mar 2024 000-51829
4/A Open Document Open Filing 14 Mar 2024 12 Mar 2024 000-51829
4/A Open Document Open Filing 14 Mar 2024 11 Mar 2024 000-51829
144 Open Document Open Filing 13 Mar 2024
4 Open Document Open Filing 12 Mar 2024 12 Mar 2024 000-51829
4 Open Document Open Filing 12 Mar 2024 11 Mar 2024 000-51829
4 Open Document Open Filing 08 Mar 2024 06 Mar 2024 000-51829
144 Open Document Open Filing 06 Mar 2024
4 Open Document Open Filing 05 Jan 2024 03 Jan 2024 000-51829
4 Open Document Open Filing 14 Dec 2023 13 Dec 2023 000-51829
144 Open Document Open Filing 13 Dec 2023
4 Open Document Open Filing 01 Dec 2023 01 Dec 2023 000-51829
4 Open Document Open Filing 01 Dec 2023 30 Nov 2023 000-51829
144 Open Document Open Filing 30 Nov 2023
4 Open Document Open Filing 16 Nov 2023 14 Nov 2023 000-51829
144 Open Document Open Filing 14 Nov 2023
4 Open Document Open Filing 18 Sep 2023 15 Sep 2023 000-51829
144 Open Document Open Filing 15 Sep 2023
4 Open Document Open Filing 14 Sep 2023 12 Sep 2023 000-51829
4 Open Document Open Filing 12 Sep 2023 08 Sep 2023 000-51829
144 Open Document Open Filing 11 Sep 2023
144 Open Document Open Filing 07 Sep 2023
144 Open Document Open Filing 21 Aug 2023
144 Open Document Open Filing 15 Aug 2023
4 Open Document Open Filing 08 Jun 2023 08 Jun 2023 000-51829
4 Open Document Open Filing 08 Jun 2023 06 Jun 2023 000-51829
144 Open Document Open Filing 05 Jun 2023
4 Open Document Open Filing 12 May 2023 10 May 2023 000-51829
144 Open Document Open Filing 10 May 2023
4 Open Document Open Filing FORM 4 04 Jan 2023 03 Jan 2023 000-51829
4 Open Document Open Filing FORM 4 05 Jan 2022 03 Jan 2022 000-51829
4 Open Document Open Filing FORM 4 25 Feb 2021 24 Feb 2021 000-51829
4 Open Document Open Filing FORM 4 19 Jan 2021 18 Jan 2021 000-51829
4 Open Document Open Filing FORM 4 04 Mar 2020 01 Mar 2020 000-51829
4 Open Document Open Filing FORM 4 18 Feb 2020 14 Feb 2020 000-51829
4 Open Document Open Filing FORM 4 01 May 2019 01 May 2019 000-51829
4 Open Document Open Filing FORM 4 22 Feb 2018 21 Feb 2018 000-51829
4 Open Document Open Filing FORM 4 03 May 2017 03 May 2017 000-51829
4/A Open Document Open Filing FORM 4/A 15 Jun 2016 04 May 2016 000-51829
4 Open Document Open Filing FORM 4 05 May 2016 04 May 2016 000-51829
4 Open Document Open Filing FORM 4 07 Aug 2014 06 Aug 2014 000-51829
4 Open Document Open Filing FORM 4 20 Apr 2012 19 Apr 2012 001-31227