ELLEN B. RICHSTONE

Business address
C/O Sonus Networks, Inc., 7 Technology Park Drive, Westford, MA, 01886
Top holdings (ownership)
SUP, OESX, and CGTX
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ELLEN B. RICHSTONE has filed 86 SEC EDGAR filings since 25 Feb 2004

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing 01 Jul 2025 01 Jul 2025 001-33887
4 Open Document Open Filing STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 23 Jun 2025 18 Jun 2025 001-40886
4 Open Document Open Filing PRIMARY DOCUMENT 27 May 2025 22 May 2025 001-06615
4 Open Document Open Filing 24 Feb 2025 21 Feb 2025 001-33887
4 Open Document Open Filing 21 Feb 2025 19 Feb 2025 001-33887
4 Open Document Open Filing 19 Feb 2025 18 Feb 2025 001-33887
4 Open Document Open Filing 18 Feb 2025 14 Feb 2025 001-33887
4 Open Document Open Filing 17 Jun 2024 14 Jun 2024 001-33887
4 Open Document Open Filing 12 Jun 2024 11 Jun 2024 001-33887
4 Open Document Open Filing STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 11 Jun 2024 07 Jun 2024 001-40886
4 Open Document Open Filing PRIMARY DOCUMENT 24 May 2024 22 May 2024 001-06615
4 Open Document Open Filing PRIMARY DOCUMENT 21 May 2024 19 May 2024 001-06615
4 Open Document Open Filing 30 Nov 2023 29 Nov 2023 001-33887
4 Open Document Open Filing OWNERSHIP DOCUMENT 19 Oct 2023 18 Oct 2023 001-15751
4 Open Document Open Filing 16 Aug 2023 15 Aug 2023 001-33887
4 Open Document Open Filing STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 13 Jun 2023 09 Jun 2023 001-40886
4 Open Document Open Filing 13 Jun 2023 09 Jun 2023 001-15751
4 Open Document Open Filing 12 Jun 2023 12 Jun 2023 001-33887
4 Open Document Open Filing 09 Jun 2023 09 Jun 2023 001-33887
4 Open Document Open Filing PRIMARY DOCUMENT 23 May 2023 19 May 2023 001-06615
4 Open Document Open Filing PRIMARY DOCUMENT 02 May 2023 28 Apr 2023 001-06615
4 Open Document Open Filing STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 29 Nov 2022 29 Nov 2022 001-40886
4/A Open Document Open Filing AMENDED STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 23 Jun 2022 10 Jun 2022 001-40886
4 Open Document Open Filing STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 13 Jun 2022 10 Jun 2022 001-40886
4 Open Document Open Filing FORM 4 13 Jun 2022 10 Jun 2022 001-33887
4 Open Document Open Filing FORM 4 - 10 Jun 2022 10 Jun 2022 001-15751
4 Open Document Open Filing PRIMARY DOCUMENT 27 May 2022 25 May 2022 001-06615
4 Open Document Open Filing PRIMARY DOCUMENT 02 May 2022 28 Apr 2022 001-06615
4 Open Document Open Filing PRIMARY DOCUMENT 03 Nov 2021 01 Nov 2021 001-40886
3 Open Document Open Filing PRIMARY DOCUMENT 03 Nov 2021 01 Nov 2021 001-40886
4 Open Document Open Filing FORM 4 - 06 Jul 2021 01 Jul 2021 001-15751
4 Open Document Open Filing PRIMARY DOCUMENT 24 Jun 2021 22 Jun 2021 001-06615
4 Open Document Open Filing FORM 4 - 11 Jun 2021 10 Jun 2021 001-15751
4 Open Document Open Filing FORM 4 07 Jun 2021 04 Jun 2021 001-33887
4 Open Document Open Filing PRIMARY DOCUMENT 27 May 2021 25 May 2021 001-06615
4 Open Document Open Filing FORM 4 - 09 Jul 2020 06 Jul 2020 001-15751
4 Open Document Open Filing PRIMARY DOCUMENT 23 Jun 2020 22 Jun 2020 001-06615
4 Open Document Open Filing FORM 4 11 Jun 2020 09 Jun 2020 001-33887
4 Open Document Open Filing PRIMARY DOCUMENT 24 Apr 2020 23 Apr 2020 001-06615
4 Open Document Open Filing PRIMARY DOCUMENT 14 Aug 2019 12 Aug 2019 001-06615
4 Open Document Open Filing FORM 4 12 Aug 2019 12 Aug 2019 001-33887
4 Open Document Open Filing 03 Jul 2019 02 Jul 2019 001-15751
4 Open Document Open Filing PRIMARY DOCUMENT 25 Apr 2019 23 Apr 2019 001-06615
4 Open Document Open Filing PRIMARY DOCUMENT 22 Apr 2019 19 Apr 2019 001-06615
4 Open Document Open Filing OWNERSHIP DOCUMENT 07 Jan 2019 03 Jan 2019 001-15751
4 Open Document Open Filing PRIMARY DOCUMENT 21 Nov 2018 20 Nov 2018 001-06615
4 Open Document Open Filing PRIMARY DOCUMENT 27 Jul 2018 26 Jul 2018 001-06615
4 Open Document Open Filing OWNERSHIP DOCUMENT 03 Jul 2018 01 Jul 2018 001-15751
4 Open Document Open Filing FORM 4 13 Jun 2018 12 Jun 2018 001-33887
4 Open Document Open Filing FORM 4 11 Jun 2018 07 Jun 2018 001-33887
4 Open Document Open Filing PRIMARY DOCUMENT 26 Apr 2018 25 Apr 2018 001-06615
4 Open Document Open Filing PRIMARY DOCUMENT 19 Apr 2018 19 Apr 2018 001-06615
4 Open Document Open Filing OWNERSHIP DOCUMENT 22 Mar 2018 15 Feb 2018 001-15751
4 Open Document Open Filing FORM 4 27 Feb 2018 26 Feb 2018 001-33887
4 Open Document Open Filing OWNERSHIP DOCUMENT 02 Feb 2018 17 Jan 2018 001-15751
4 Open Document Open Filing PRIMARY DOCUMENT 07 Sep 2017 26 Jul 2017 001-06615
4 Open Document Open Filing FORM 4 SUBMISSION 16 Aug 2017 15 Aug 2017 001-35905
4 Open Document Open Filing OWNERSHIP DOCUMENT 07 Jul 2017 05 Jul 2017 001-15751
4 Open Document Open Filing PRIMARY DOCUMENT 29 Jun 2017 25 Apr 2017 001-06615
3 Open Document Open Filing PRIMARY DOCUMENT 29 Jun 2017 25 Oct 2016 001-06615
4 Open Document Open Filing FORM 4 15 Jun 2017 13 Jun 2017 001-33887
4 Open Document Open Filing FORM 4 SUBMISSION 17 May 2017 11 May 2017 001-35905
3/A Open Document Open Filing FORM 3/A 28 Feb 2017 16 Feb 2017 001-33887
3 Open Document Open Filing FORM 3 22 Feb 2017 16 Feb 2017 001-33887
4 Open Document Open Filing OWNERSHIP DOCUMENT 05 Jan 2017 03 Jan 2017 001-15751
4 Open Document Open Filing OWNERSHIP DOCUMENT 14 Jul 2016 13 Jul 2016 001-15751
4 Open Document Open Filing FORM 4 SUBMISSION 23 May 2016 19 May 2016 001-35905
4 Open Document Open Filing OWNERSHIP DOCUMENT 10 Mar 2016 08 Mar 2016 001-15751
4 Open Document Open Filing OWNERSHIP DOCUMENT 06 Jul 2015 01 Jul 2015 001-15751
4 Open Document Open Filing FORM 4 SUBMISSION 04 Jun 2015 02 Jun 2015 001-35437
4 Open Document Open Filing FORM 4 SUBMISSION 19 May 2015 15 May 2015 001-35905
4 Open Document Open Filing OWNERSHIP DOCUMENT 03 Feb 2015 30 Jan 2015 001-15751
4 Open Document Open Filing FORM 4 SUBMISSION 18 Nov 2014 14 Nov 2014 001-35437
3 Open Document Open Filing FORM 3 SUBMISSION 14 Nov 2014 06 Nov 2014 001-35437
4 Open Document Open Filing PRIMARY DOCUMENT 03 Jul 2014 01 Jul 2014 001-15751
3 Open Document Open Filing PRIMARY DOCUMENT 03 Jul 2014 01 Jul 2014 001-15751
4 Open Document Open Filing FORM 4 SUBMISSION 29 May 2014 27 May 2014 001-35905
3 Open Document Open Filing FORM 3 SUBMISSION 29 May 2014 27 May 2014 001-35905