Margaret A. Horn SEC EDGAR Filings (CIK 0001294192)

SEC EDGAR filings, ownership reports, and insider transactions for Margaret A. Horn.

Business address
925 Page Mill Road, Palo Alto, CA, 94304
Top holdings (ownership)
RVMD and SGMO
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Margaret A. Horn has filed 73 SEC EDGAR filings since 17 Jun 2004

Latest Filings

Recent SEC filings for Margaret A. Horn including 4, 144, 144/A and more.

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open 4 document View SEC filing for 4 09 Jan 2026 07 Jan 2026 001-39219
144 Open 144 document View SEC filing for 144 07 Jan 2026
4 Open 4 document View SEC filing for 4 18 Dec 2025 16 Dec 2025 001-39219
144 Open 144 document View SEC filing for 144 12 Dec 2025
4 Open 4 document View SEC filing for 4 18 Sep 2025 16 Sep 2025 001-39219
144 Open 144 document View SEC filing for 144 15 Sep 2025
4 Open 4 document View SEC filing for 4 18 Jun 2025 16 Jun 2025 001-39219
4 Open 4 document View SEC filing for 4 16 Jun 2025 12 Jun 2025 000-30171
144 Open 144 document View SEC filing for 144 13 Jun 2025
4 Open 4 document View SEC filing for 4 19 Mar 2025 17 Mar 2025 001-39219
144 Open 144 document View SEC filing for 144 14 Mar 2025
4 Open 4 document View SEC filing for 4 04 Mar 2025 01 Mar 2025 001-39219
4 Open 4 document View SEC filing for 4 18 Dec 2024 16 Dec 2024 001-39219
144 Open 144 document View SEC filing for 144 16 Dec 2024
4 Open 4 document View SEC filing for 4 15 Oct 2024 11 Oct 2024 001-39219
144 Open 144 document View SEC filing for 144 11 Oct 2024
4 Open 4 document View SEC filing for 4 18 Sep 2024 16 Sep 2024 001-39219
144 Open 144 document View SEC filing for 144 16 Sep 2024
4 Open 4 document View SEC filing for 4 20 Jun 2024 17 Jun 2024 001-39219
144 Open 144 document View SEC filing for 144 14 Jun 2024
4 Open 4 document View SEC filing for 4 06 Jun 2024 04 Jun 2024 000-30171
4 Open 4 document View SEC filing for 4 20 Mar 2024 18 Mar 2024 001-39219
144 Open 144 document View SEC filing for 144 15 Mar 2024
4 Open 4 document View SEC filing for 4 13 Mar 2024 11 Mar 2024 001-39219
144 Open 144 document View SEC filing for 144 11 Mar 2024
4 Open 4 document View SEC filing for 4 05 Mar 2024 01 Mar 2024 001-39219
4 Open 4 document View SEC filing for 4 19 Dec 2023 15 Dec 2023 001-39219
144 Open 144 document View SEC filing for 144 15 Dec 2023
144/A Open 144/A document View SEC filing for 144/A 14 Dec 2023
144 Open 144 document View SEC filing for 144 14 Dec 2023
4 Open 4 document View SEC filing for 4 08 Dec 2023 06 Dec 2023 001-39219
144 Open 144 document View SEC filing for 144 06 Dec 2023
4 Open 4 document View SEC filing for 4 25 Oct 2023 25 Oct 2023 001-39219
4 Open 4 document View SEC filing for 4 18 Oct 2023 16 Oct 2023 001-39219
144 Open 144 document View SEC filing for 144 16 Oct 2023
144 Open 144 document View SEC filing for 144 20 Sep 2023
4 Open 4 document View SEC filing for 4 19 Sep 2023 15 Sep 2023 001-39219
144 Open 144 document View SEC filing for 144 15 Sep 2023
4 Open 4 document View SEC filing for 4 01 Sep 2023 31 Aug 2023 001-39219
144 Open 144 document View SEC filing for 144 31 Aug 2023
4 Open 4 document View SEC filing for 4 17 Aug 2023 15 Aug 2023 001-39219
144 Open 144 document View SEC filing for 144 15 Aug 2023
4 Open 4 document View SEC filing for 4 22 Jun 2023 20 Jun 2023 001-39219
144 Open 144 document View SEC filing for 144 20 Jun 2023
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 05 Jun 2023 01 Jun 2023 000-30171
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 21 Mar 2023 17 Mar 2023 001-39219
4 Open 4 document View SEC filing for 4 FORM 4 03 Mar 2023 01 Mar 2023 001-39219
4 Open 4 document View SEC filing for 4 FORM 4 21 Dec 2022 19 Dec 2022 001-39219
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 19 Dec 2022 15 Dec 2022 000-30171
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 19 Dec 2022 15 Dec 2022 000-30171
4 Open 4 document View SEC filing for 4 FORM 4 09 Nov 2022 07 Nov 2022 001-39219
4 Open 4 document View SEC filing for 4 FORM 4 02 Nov 2022 31 Oct 2022 001-39219
4 Open 4 document View SEC filing for 4 FORM 4 28 Oct 2022 26 Oct 2022 001-39219
4 Open 4 document View SEC filing for 4 FORM 4 21 Sep 2022 19 Sep 2022 001-39219
4 Open 4 document View SEC filing for 4 FORM 4 22 Jun 2022 17 Jun 2022 001-39219
4 Open 4 document View SEC filing for 4 FORM 4 21 Mar 2022 17 Mar 2022 001-39219
4 Open 4 document View SEC filing for 4 FORM 4 03 Mar 2022 01 Mar 2022 001-39219
4 Open 4 document View SEC filing for 4 FORM 4 21 Dec 2021 17 Dec 2021 001-39219
4 Open 4 document View SEC filing for 4 FORM 4 21 Sep 2021 17 Sep 2021 001-39219
4 Open 4 document View SEC filing for 4 FORM 4 22 Jun 2021 17 Jun 2021 001-39219
4 Open 4 document View SEC filing for 4 FORM 4 08 Mar 2021 04 Mar 2021 001-39219
4 Open 4 document View SEC filing for 4 FORM 4 08 Feb 2021 05 Feb 2021 001-39219
4 Open 4 document View SEC filing for 4 FORM 4 02 Oct 2020 01 Oct 2020 001-39219
4 Open 4 document View SEC filing for 4 FORM 4 14 Feb 2020 12 Feb 2020 001-39219
3 Open 3 document View SEC filing for 3 FORM 3 12 Feb 2020 12 Feb 2020 001-39219

About this filer

Margaret A. Horn files with the SEC under CIK 0001294192. This page aggregates EDGAR filings and related ownership activity.

See reporting owner transactions.

FAQ

What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.

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