David M. Demski

Business address
C/O Alphatec Holdings, Inc., 1950 Camino Vida Roble, Carlsbad, CA, 92008
Top holdings (ownership)
ATEC
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David M. Demski has filed 51 SEC EDGAR filings since 02 Aug 2012

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing 12 Dec 2025 11 Dec 2025 000-52024
144 Open Document Open Filing 11 Dec 2025
4 Open Document Open Filing 13 Jun 2025 11 Jun 2025 000-52024
4 Open Document Open Filing 4 21 Apr 2025 21 Apr 2025 001-40902
4 Open Document Open Filing 18 Dec 2024 18 Dec 2024 000-52024
4 Open Document Open Filing 12 Dec 2024 10 Dec 2024 001-40902
3 Open Document Open Filing 12 Dec 2024 10 Dec 2024 001-40902
4 Open Document Open Filing PRIMARY DOCUMENT 15 Nov 2024 15 Nov 2024 001-38721
4 Open Document Open Filing 21 Aug 2024 21 Aug 2024 000-52024
4 Open Document Open Filing 05 Aug 2024 02 Aug 2024 000-52024
4 Open Document Open Filing 14 Jun 2024 12 Jun 2024 000-52024
4 Open Document Open Filing 13 Nov 2023 09 Nov 2023 000-52024
4 Open Document Open Filing 19 Oct 2023 17 Oct 2023 000-52024
3 Open Document Open Filing 19 Oct 2023 17 Oct 2023 000-52024
4 Open Document Open Filing PRIMARY DOCUMENT 28 Jun 2023 26 Jun 2023 001-38721
4 Open Document Open Filing PRIMARY DOCUMENT 22 Aug 2022 18 Aug 2022 001-38721
4 Open Document Open Filing FORM 4 SUBMISSION 31 Jan 2022 27 Jan 2022 001-35621
4 Open Document Open Filing PRIMARY DOCUMENT 02 Nov 2021 22 Oct 2021 001-38721
4 Open Document Open Filing FORM 4 SUBMISSION 27 Apr 2021 23 Apr 2021 001-35621
4 Open Document Open Filing PRIMARY DOCUMENT 03 Feb 2021 31 Jan 2021 001-38721
3 Open Document Open Filing PRIMARY DOCUMENT 03 Feb 2021 31 Jan 2021 001-38721
4 Open Document Open Filing FORM 4 SUBMISSION 19 Jan 2021 14 Jan 2021 001-35621
4 Open Document Open Filing FORM 4 SUBMISSION 18 Dec 2020 16 Dec 2020 001-35621
4/A Open Document Open Filing FORM 4/A SUBMISSION 18 Dec 2020 06 Aug 2020 001-35621
4 Open Document Open Filing FORM 4 SUBMISSION 10 Aug 2020 06 Aug 2020 001-35621
4 Open Document Open Filing FORM 4 SUBMISSION 24 Jan 2020 22 Jan 2020 001-35621
4 Open Document Open Filing FORM 4 SUBMISSION 11 Feb 2019 22 Jan 2019 001-35621
4 Open Document Open Filing FORM 4 SUBMISSION 20 Apr 2018 18 Apr 2018 001-35621
4 Open Document Open Filing FORM 4 SUBMISSION 16 Apr 2018 12 Apr 2018 001-35621
4 Open Document Open Filing FORM 4 SUBMISSION 24 Jan 2018 22 Jan 2018 001-35621
4 Open Document Open Filing FORM 4 SUBMISSION 30 Aug 2017 28 Aug 2017 001-35621
4 Open Document Open Filing FORM 4 SUBMISSION 01 Feb 2017 30 Jan 2017 001-35621
4 Open Document Open Filing FORM 4 SUBMISSION 27 Jan 2016 25 Jan 2016 001-35621
4 Open Document Open Filing FORM 4 SUBMISSION 02 Mar 2015 26 Feb 2015 001-35621
4 Open Document Open Filing FORM 4 SUBMISSION 22 Jan 2015 20 Jan 2015 001-35621
4 Open Document Open Filing FORM 4 SUBMISSION 10 Mar 2014 06 Mar 2014 001-35621
4 Open Document Open Filing FORM 4 SUBMISSION 27 Jan 2014 23 Jan 2014 001-35621
4 Open Document Open Filing FORM 4 SUBMISSION 16 Jan 2014 15 Jan 2014 001-35621
4 Open Document Open Filing FORM 4 SUBMISSION 02 Jan 2014 31 Dec 2013 001-35621