Flagship Pioneering Inc.

Notable people
NOUBAR AFEYAN
Business address
55 Cambridge Parkway, Suite 800 E, Cambridge, MA, 02142
Top holdings (ownership)
OMGA, SANA, FHTX, and AXLA
Top securities (13F)
MRNA, SANA, FHTX, and MCRB
State of incorporation
DE
Former names
Flagship Ventures Management, Inc. (to 14 Nov 2016)
⭐ Add to watchlist ⭐
Get insider transactions for this reporting owner
Flagship Pioneering Inc. has filed 88 SEC EDGAR filings since 24 May 2007

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
144 Open Document Open Filing 11 Dec 2025
13F-HR Open Document Open Filing 14 Nov 2025 30 Sep 2025 028-17559
N-PX Open Document Open Filing 02 Sep 2025 30 Jun 2025 028-17559
13F-HR Open Document Open Filing 14 Aug 2025 30 Jun 2025 028-17559
13F-HR Open Document Open Filing 15 May 2025 31 Mar 2025 028-17559
13F-HR Open Document Open Filing 14 Feb 2025 31 Dec 2024 028-17559
13F-HR Open Document Open Filing 14 Nov 2024 30 Sep 2024 028-17559
N-PX Open Document Open Filing 03 Sep 2024 30 Jun 2024 028-17559
13F-HR Open Document Open Filing 14 Aug 2024 30 Jun 2024 028-17559
4 Open Document Open Filing 4 24 May 2024 22 May 2024 001-39634
13F-HR Open Document Open Filing 15 May 2024 31 Mar 2024 028-17559
4 Open Document Open Filing 4 14 Feb 2024 12 Feb 2024 001-39941
13F-HR Open Document Open Filing 14 Feb 2024 31 Dec 2023 028-17559
13F-HR Open Document Open Filing 14 Nov 2023 30 Sep 2023 028-17559
4 Open Document Open Filing FORM 4 SUBMISSION 15 Sep 2023 13 Sep 2023 001-39941
4 Open Document Open Filing FORM 4 SUBMISSION 15 Aug 2023 11 Aug 2023 001-39746
13F-HR Open Document Open Filing 14 Aug 2023 30 Jun 2023 028-17559
4 Open Document Open Filing 4 13 Jul 2023 11 Jul 2023 001-38473
13F-HR Open Document Open Filing 15 May 2023 31 Mar 2023 028-17559
4 Open Document Open Filing FORM 4 SUBMISSION 27 Feb 2023 27 Feb 2023 001-40657
13F-HR Open Document Open Filing 14 Feb 2023 31 Dec 2022 028-17559
13F-HR Open Document Open Filing 14 Nov 2022 30 Sep 2022 028-17559
3 Open Document Open Filing FORM 3 SUBMISSION 17 Oct 2022 13 Oct 2022 001-38901
13F-HR Open Document Open Filing 15 Aug 2022 30 Jun 2022 028-17559
4 Open Document Open Filing FORM 4 SUBMISSION 07 Jul 2022 05 Jul 2022 001-37465
4 Open Document Open Filing FORM 4 SUBMISSION 01 Jun 2022 27 May 2022 001-38473
13F-HR Open Document Open Filing 16 May 2022 31 Mar 2022 028-17559
13F-HR Open Document Open Filing 14 Feb 2022 31 Dec 2021 028-17559
13F-HR Open Document Open Filing 15 Nov 2021 30 Sep 2021 028-17559
13F-HR Open Document Open Filing 16 Aug 2021 30 Jun 2021 028-17559
4 Open Document Open Filing FORM 4 SUBMISSION 05 Aug 2021 03 Aug 2021 001-40657
4 Open Document Open Filing FORM 4 SUBMISSION 05 Aug 2021 03 Aug 2021 001-40657
3 Open Document Open Filing FORM 3 SUBMISSION 29 Jul 2021 29 Jul 2021 001-40657
3 Open Document Open Filing FORM 3 SUBMISSION 29 Jul 2021 29 Jul 2021 001-40657
13F-HR Open Document Open Filing 17 May 2021 31 Mar 2021 028-17559
13F-HR Open Document Open Filing 16 Feb 2021 31 Dec 2020 028-17559
4 Open Document Open Filing FORM 4 SUBMISSION 10 Feb 2021 08 Feb 2021 001-39941
3 Open Document Open Filing FORM 3 SUBMISSION 03 Feb 2021 03 Feb 2021 001-39941
4 Open Document Open Filing OWNERSHIP DOCUMENT 10 Dec 2020 08 Dec 2020 001-39746
3 Open Document Open Filing 3 03 Dec 2020 03 Dec 2020 001-39746
4 Open Document Open Filing FORM 4 SUBMISSION 25 Nov 2020 23 Nov 2020 001-37465
13F-HR Open Document Open Filing 16 Nov 2020 30 Sep 2020 028-17559
4 Open Document Open Filing FORM 4 SUBMISSION 29 Oct 2020 27 Oct 2020 001-39634
3 Open Document Open Filing FORM 3 SUBMISSION 22 Oct 2020 22 Oct 2020 001-39634
3 Open Document Open Filing FORM 3 SUBMISSION 13 Oct 2020 13 Oct 2020 001-39615
13F-HR Open Document Open Filing 13 Aug 2020 30 Jun 2020 028-17559
3 Open Document Open Filing FORM 3 SUBMISSION 01 Jul 2020 29 Jun 2020 001-38473
13F-HR Open Document Open Filing 14 May 2020 31 Mar 2020 028-17559
13F-HR Open Document Open Filing 13 Feb 2020 31 Dec 2019 028-17559
13F-HR Open Document Open Filing 14 Nov 2019 30 Sep 2019 028-17559
13F-HR Open Document Open Filing 13 Aug 2019 30 Jun 2019 028-17559
3 Open Document Open Filing FORM 3 SUBMISSION 28 Jun 2019 18 Jun 2019 001-37465
13F-HR Open Document Open Filing 14 May 2019 31 Mar 2019 028-17559
4 Open Document Open Filing FORM 4 SUBMISSION 06 Mar 2019 04 Mar 2019 001-38822
3 Open Document Open Filing FORM 3 SUBMISSION 27 Feb 2019 27 Feb 2019 001-38822
13F-HR Open Document Open Filing 13 Feb 2019 31 Dec 2018 028-17559
4 Open Document Open Filing FORM 4 SUBMISSION 13 Dec 2018 11 Dec 2018 001-38753
3 Open Document Open Filing FORM 3 SUBMISSION 07 Dec 2018 07 Dec 2018 001-38753
13F-HR Open Document Open Filing 13 Nov 2018 30 Sep 2018 028-17559
13F-HR Open Document Open Filing 07 Aug 2018 30 Jun 2018 028-17559
13F-HR Open Document Open Filing 15 May 2018 31 Mar 2018 028-17559
13F-HR Open Document Open Filing 14 Feb 2018 31 Dec 2017 028-17559
13F-HR Open Document Open Filing 03 Nov 2017 30 Sep 2017 028-17559
13F-HR Open Document Open Filing 02 Aug 2017 30 Jun 2017 028-17559
13F-HR Open Document Open Filing 10 May 2017 31 Mar 2017 028-17559
13F-HR Open Document Open Filing 13 Feb 2017 31 Dec 2016 028-17559
13F-HR Open Document Open Filing 14 Nov 2016 30 Sep 2016 028-17559
4 Open Document Open Filing FORM 4 - NOUBAR AFEYAN - AGTC 2 29 Jul 2015 27 Jul 2015 001-33827
4 Open Document Open Filing FORM 4 - NOUBAR AFEYAN - AGTC 1 29 Jul 2015 27 Jul 2015 001-33827
4 Open Document Open Filing FORM 4 16 Jul 2015 14 Jul 2015 001-33827
4 Open Document Open Filing FORM 4 - NOUBAR AFEYAN - FLAGSHIP 4 05 Dec 2014 03 Dec 2014 001-33827
4 Open Document Open Filing FORM 4 - NOUBAR AFEYAN - FLAGSHIP 3 05 Dec 2014 03 Dec 2014 001-33827
4 Open Document Open Filing FORM 4 - NOUBAR AFEYAN - FLAGSHIP 2 05 Dec 2014 03 Dec 2014 001-33827
4 Open Document Open Filing FORM 4 - NOUBAR AFEYAN - FLAGSHIP 1 05 Dec 2014 03 Dec 2014 001-33827