Martin H. Huber Jr.

Business address
Mersana Therapeutics, Inc, 840 Memorial Drive, Cambridge, MA, 02139
Top holdings (ownership)
SNDX and MRSN
Get insider transactions for this reporting owner
Martin H. Huber Jr. has filed 45 SEC EDGAR filings since 22 Sep 2015

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing OWNERSHIP DOCUMENT 15 Sep 2025 11 Sep 2025 001-38129
4 Open Document Open Filing 4 19 May 2025 19 May 2025 001-37708
4 Open Document Open Filing 4 07 Feb 2025 05 Feb 2025 001-37708
4 Open Document Open Filing OWNERSHIP DOCUMENT 17 Jan 2025 15 Jan 2025 001-38129
4 Open Document Open Filing OWNERSHIP DOCUMENT 13 Sep 2024 11 Sep 2024 001-38129
144 Open Document Open Filing 13 Sep 2024
4 Open Document Open Filing PRIMARY DOCUMENT 09 Feb 2024 07 Feb 2024 001-37708
4 Open Document Open Filing OWNERSHIP DOCUMENT 17 Jan 2024 15 Jan 2024 001-38129
4 Open Document Open Filing OWNERSHIP DOCUMENT 04 Oct 2023 02 Oct 2023 001-38129
4 Open Document Open Filing OWNERSHIP DOCUMENT 13 Sep 2023 11 Sep 2023 001-38129
4 Open Document Open Filing 18 Aug 2023 16 Aug 2023 001-40925
4 Open Document Open Filing OWNERSHIP DOCUMENT 06 Jul 2023 03 Jul 2023 001-38129
4 Open Document Open Filing OWNERSHIP DOCUMENT 12 Jun 2023 08 Jun 2023 001-38129
4 Open Document Open Filing OWNERSHIP DOCUMENT 05 Apr 2023 03 Apr 2023 001-38129
4 Open Document Open Filing PRIMARY DOCUMENT 03 Feb 2023 02 Feb 2023 001-37708
4 Open Document Open Filing 04 Jan 2023 01 Jan 2023 001-40925
4/A Open Document Open Filing 23 Jun 2022 15 Jun 2022 001-40925
4 Open Document Open Filing 17 Jun 2022 15 Jun 2022 001-40925
4 Open Document Open Filing OWNERSHIP DOCUMENT 10 Jun 2022 09 Jun 2022 001-38129
4 Open Document Open Filing 24 Feb 2022 22 Feb 2022 001-40925
4 Open Document Open Filing PRIMARY DOCUMENT 03 Feb 2022 02 Feb 2022 001-37708
4 Open Document Open Filing OWNERSHIP DOCUMENT 05 Jan 2022 03 Jan 2022 001-38129
4 Open Document Open Filing OWNERSHIP DOCUMENT 25 Oct 2021 21 Oct 2021 001-40925
3 Open Document Open Filing OWNERSHIP DOCUMENT 21 Oct 2021 21 Oct 2021 001-40925
4 Open Document Open Filing PRIMARY DOCUMENT 17 Sep 2021 15 Sep 2021 001-37708
3 Open Document Open Filing PRIMARY DOCUMENT 17 Sep 2021 15 Sep 2021 001-37708
4 Open Document Open Filing OWNERSHIP DOCUMENT 15 Jun 2021 11 Jun 2021 001-38129
4 Open Document Open Filing OWNERSHIP DOCUMENT 20 Jan 2021 15 Jan 2021 001-38129
4 Open Document Open Filing 4 24 Jun 2020 13 Apr 2020 001-38129
3 Open Document Open Filing 3 24 Jun 2020 13 Apr 2020 001-38129
4 Open Document Open Filing PRIMARY DOCUMENT 22 Jan 2019 22 Jan 2019 001-35587
4 Open Document Open Filing 4 25 Sep 2018 21 Sep 2018 001-35587
4 Open Document Open Filing 4 05 Mar 2018 01 Mar 2018 001-35587
4 Open Document Open Filing 4 05 Dec 2017 01 Dec 2017 001-35587
4 Open Document Open Filing 4 20 Nov 2017 16 Nov 2017 001-35587
4 Open Document Open Filing 4 25 Sep 2017 21 Sep 2017 001-35587
4 Open Document Open Filing 4 04 Apr 2017 01 Apr 2017 001-35587
4 Open Document Open Filing 4 29 Mar 2017 27 Mar 2017 001-35587
4 Open Document Open Filing 4 03 Mar 2017 01 Mar 2017 001-35587
4 Open Document Open Filing 4 03 Jan 2017 01 Jan 2017 001-35587
4 Open Document Open Filing 4 03 Nov 2016 01 Nov 2016 001-35587
4 Open Document Open Filing 4 23 Sep 2016 21 Sep 2016 001-35587
4 Open Document Open Filing 4 03 Mar 2016 01 Mar 2016 001-35587
4 Open Document Open Filing 4 22 Sep 2015 21 Sep 2015 001-35587
3 Open Document Open Filing 3 22 Sep 2015 21 Sep 2015 001-35587