BETH C. SEIDENBERG

Business address
3075 Townsgate Road Suite #140, Westlake Village, CA, 91361
Top holdings (ownership)
PGNY, VERA, KYTX, and ATRA
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BETH C. SEIDENBERG has filed 124 SEC EDGAR filings since 03 Jan 2003

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing OWNERSHIP DOCUMENT 22 Dec 2025 18 Dec 2025 001-41947
4 Open Document Open Filing OWNERSHIP DOCUMENT 10 Jun 2025 06 Jun 2025 001-41742
4 Open Document Open Filing 4 02 Jun 2025 29 May 2025 001-41947
4 Open Document Open Filing FORM 4 23 May 2025 21 May 2025 001-41696
4 Open Document Open Filing 16 May 2025 14 May 2025 001-40407
144 Open Document Open Filing 09 Dec 2024
4 Open Document Open Filing 30 Oct 2024 28 Oct 2024 001-40407
144 Open Document Open Filing 28 Oct 2024
4 Open Document Open Filing 20 Sep 2024 18 Sep 2024 001-40407
144 Open Document Open Filing 18 Sep 2024
144 Open Document Open Filing 18 Sep 2024
4 Open Document Open Filing FORM 4 11 Jun 2024 07 Jun 2024 001-41696
4 Open Document Open Filing OWNERSHIP DOCUMENT 07 Jun 2024 05 Jun 2024 001-41742
4 Open Document Open Filing FORM 4 28 May 2024 23 May 2024 001-39100
4 Open Document Open Filing 17 May 2024 15 May 2024 001-40407
4 Open Document Open Filing 4 14 Feb 2024 12 Feb 2024 001-41947
3 Open Document Open Filing 3 07 Feb 2024 07 Feb 2024 001-41947
4 Open Document Open Filing OWNERSHIP DOCUMENT 20 Jul 2023 18 Jul 2023 001-41742
3 Open Document Open Filing OWNERSHIP DOCUMENT 13 Jul 2023 13 Jul 2023 001-41742
4 Open Document Open Filing FORM 4 27 Jun 2023 23 Jun 2023 001-39100
4 Open Document Open Filing FORM 4 13 Jun 2023 09 Jun 2023 001-39100
4 Open Document Open Filing 02 Jun 2023 31 May 2023 001-36548
4 Open Document Open Filing FORM 4 01 Jun 2023 24 May 2023 001-39100
4 Open Document Open Filing FORM 4 SUBMISSION 12 May 2023 10 May 2023 001-40407
4 Open Document Open Filing FORM 4 SUBMISSION 11 May 2023 09 May 2023 001-41696
4 Open Document Open Filing FORM 4 SUBMISSION 04 May 2023 04 May 2023 001-41696
3 Open Document Open Filing FORM 3 SUBMISSION 04 May 2023 04 May 2023 001-41696
4 Open Document Open Filing FORM 4 SUBMISSION 03 Apr 2023 30 Mar 2023 001-40407
4 Open Document Open Filing FORM 4 SUBMISSION 30 Mar 2023 28 Mar 2023 001-40407
4 Open Document Open Filing FORM 4 SUBMISSION 28 Mar 2023 24 Mar 2023 001-40407
4 Open Document Open Filing FORM 4 SUBMISSION 21 Mar 2023 17 Mar 2023 001-40407
4 Open Document Open Filing FORM 4 SUBMISSION 17 Mar 2023 15 Mar 2023 001-40407
4 Open Document Open Filing FORM 4 SUBMISSION 14 Mar 2023 10 Mar 2023 001-40407
4 Open Document Open Filing FORM 4 SUBMISSION 07 Mar 2023 03 Mar 2023 001-40407
4 Open Document Open Filing FORM 4 SUBMISSION 03 Mar 2023 01 Mar 2023 001-40407
4 Open Document Open Filing FORM 4 SUBMISSION 27 Feb 2023 23 Feb 2023 001-40407
4 Open Document Open Filing FORM 4 SUBMISSION 15 Feb 2023 13 Feb 2023 001-40407
4 Open Document Open Filing FORM 4 SUBMISSION 13 Feb 2023 09 Feb 2023 001-40407
4 Open Document Open Filing FORM 4 SUBMISSION 09 Feb 2023 03 Feb 2023 001-40407
4 Open Document Open Filing FORM 4 26 Oct 2022 24 Oct 2022 001-39100
4 Open Document Open Filing FORM 4 27 Jun 2022 23 Jun 2022 001-36548
4 Open Document Open Filing FORM 4 SUBMISSION 26 May 2022 24 May 2022 001-40407
4 Open Document Open Filing FORM 4 - 27 Dec 2021 22 Dec 2021 001-39100
4 Open Document Open Filing OWNERSHIP DOCUMENT 18 Nov 2021 17 Nov 2021 001-39100
4 Open Document Open Filing FORM 4 - 26 Oct 2021 16 Sep 2021 001-39100
4 Open Document Open Filing FORM 4 - 21 Jul 2021 19 Jul 2021 001-39100
4 Open Document Open Filing FORM 4 - 23 Jun 2021 21 Jun 2021 001-39100
4 Open Document Open Filing FORM 4 09 Jun 2021 08 Jun 2021 001-36548
4 Open Document Open Filing FORM 4 SUBMISSION 18 May 2021 18 May 2021 001-40407
4 Open Document Open Filing FORM 4 SUBMISSION 17 May 2021 13 May 2021 001-40407
3 Open Document Open Filing FORM 3 SUBMISSION 13 May 2021 13 May 2021 001-40407
4 Open Document Open Filing FORM 4 - 19 Apr 2021 15 Apr 2021 001-39100
4 Open Document Open Filing FORM 4 - 01 Apr 2021 30 Mar 2021 001-39100
4 Open Document Open Filing FORM 4 SUBMISSION 26 Jan 2021 22 Jan 2021 001-39100
4 Open Document Open Filing FORM 4 SUBMISSION 11 Jan 2021 07 Jan 2021 001-39100
4 Open Document Open Filing FORM 4 SUBMISSION 04 Jan 2021 30 Dec 2020 001-39100
4 Open Document Open Filing FORM 4 SUBMISSION 15 Dec 2020 14 Dec 2020 001-39100
4 Open Document Open Filing FORM 4 SUBMISSION 02 Dec 2020 30 Nov 2020 001-39100
4 Open Document Open Filing FORM 4 SUBMISSION 01 Dec 2020 27 Nov 2020 001-39100
4/A Open Document Open Filing FORM 4/A SUBMISSION 20 Nov 2020 24 Oct 2020 001-39100
4 Open Document Open Filing FORM 4 SUBMISSION 17 Nov 2020 13 Nov 2020 001-39100
4 Open Document Open Filing FORM 4 SUBMISSION 27 Oct 2020 24 Oct 2020 001-39100
4 Open Document Open Filing FORM 4 SUBMISSION 24 Aug 2020 19 Aug 2020 001-39100
4 Open Document Open Filing FORM 4 SUBMISSION 13 Aug 2020 11 Aug 2020 001-39100
4 Open Document Open Filing FORM 4 SUBMISSION 17 Jun 2020 16 Jun 2020 001-36548
4 Open Document Open Filing FORM 4 SUBMISSION 30 Oct 2019 29 Oct 2019 001-39100
3 Open Document Open Filing FORM 3 SUBMISSION 24 Oct 2019 24 Oct 2019 001-39100
4 Open Document Open Filing FORM 4 SUBMISSION 02 Jul 2019 30 Jun 2019 001-35945
4 Open Document Open Filing FORM 4 SUBMISSION 01 Jul 2019 27 Jun 2019 001-36548
4 Open Document Open Filing FORM 4 SUBMISSION 07 Jun 2019 31 Mar 2019 001-35945
4 Open Document Open Filing PRIMARY DOCUMENT 24 Jan 2019 22 Jan 2019 001-35587
4 Open Document Open Filing FORM 4 SUBMISSION 02 Jul 2018 02 Jul 2018 001-35945
4 Open Document Open Filing FORM 4 SUBMISSION 22 Jun 2018 22 Jun 2018 001-38345
4 Open Document Open Filing FORM 4 SUBMISSION 18 Jun 2018 14 Jun 2018 001-36548
4 Open Document Open Filing 4 05 Jun 2018 01 Jun 2018 001-35587
4 Open Document Open Filing FORM 4 SUBMISSION 31 May 2018 18 May 2018 001-35945
4 Open Document Open Filing FORM 4 SUBMISSION 28 Mar 2018 26 Mar 2018 001-38345
4 Open Document Open Filing FORM 4 SUBMISSION 30 Jan 2018 30 Jan 2018 001-38345
3 Open Document Open Filing FORM 3 SUBMISSION 25 Jan 2018 25 Jan 2018 001-38345
4 Open Document Open Filing OWNERSHIP DOCUMENT 15 Dec 2017 14 Dec 2017 001-35587
4 Open Document Open Filing OWNERSHIP DOCUMENT 11 Sep 2017 11 Sep 2017 001-35587
4 Open Document Open Filing FORM 4 SUBMISSION 26 Jun 2017 22 Jun 2017 001-35945
4 Open Document Open Filing FORM 4 SUBMISSION 12 Jun 2017 08 Jun 2017 001-36548
4 Open Document Open Filing 4 05 Jun 2017 01 Jun 2017 001-35587
4 Open Document Open Filing FORM 4 SUBMISSION 05 Jan 2017 03 Jan 2017 001-36548
4 Open Document Open Filing FORM 4 SUBMISSION 06 Jul 2016 01 Jul 2016 001-35945
4 Open Document Open Filing 4 03 Jun 2016 01 Jun 2016 001-35587
4 Open Document Open Filing FORM 4 SUBMISSION 23 May 2016 19 May 2016 001-35945
4 Open Document Open Filing 4 18 Mar 2016 18 Mar 2016 001-35587
4 Open Document Open Filing 4 17 Feb 2016 16 Dec 2015 001-35587
4 Open Document Open Filing FORM 4 SUBMISSION 05 Jan 2016 04 Jan 2016 001-36548
4 Open Document Open Filing FORM 4 SUBMISSION 17 Dec 2015 16 Dec 2015 001-36548
4 Open Document Open Filing FORM 4 SUBMISSION 21 Sep 2015 17 Sep 2015 001-36548
4 Open Document Open Filing 4 21 Sep 2015 17 Sep 2015 001-35587
4 Open Document Open Filing FORM 4 SUBMISSION 10 Jul 2015 08 Jul 2015 001-35945
4 Open Document Open Filing 4 03 Jun 2015 01 Jun 2015 001-35587
4 Open Document Open Filing FORM 4 SUBMISSION 21 May 2015 19 May 2015 001-36548
4 Open Document Open Filing FORM 4 SUBMISSION 18 May 2015 14 May 2015 001-36548
4 Open Document Open Filing FORM 4 SUBMISSION 21 Jan 2015 16 Jan 2015 001-36548
4 Open Document Open Filing FORM 4 SUBMISSION 23 Oct 2014 21 Oct 2014 001-36548
3 Open Document Open Filing FORM 3 SUBMISSION 15 Oct 2014 15 Oct 2014 001-36548
4 Open Document Open Filing FORM 4 SUBMISSION 25 Jul 2014 23 Jul 2014 001-35945
4 Open Document Open Filing 4 04 Jun 2014 02 Jun 2014 001-35587
4 Open Document Open Filing PRIMARY DOCUMENT 12 Feb 2014 10 Feb 2014 001-35945