Seres Therapeutics, Inc. (MCRB)
Nasdaq: MCRB · Pharmaceutical Preparations · Cambridge, MA · filing with the SEC since 2014
Who runs Seres Therapeutics, Inc.
Officers and directors as they report to the SEC on Forms 3, 4 and 5, named as filedChief executive, as filed
Shaff Eric D.
CEO and President. First filing Jun 2015, latest Aug 18, 2026, 20 filings in all.
Officers reporting now
7
of 13 people with a filing in the last fifteen months
Directors reporting now
6
31 people on the record since 2015
Officerssales are open-market, Sep 30, 2025 to Sep 30, 2026
| Name | Title as filed | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Shaff Eric D. | CEO and President | Jun 2015 | Aug 18, 2026 | 4 · $0.00 |
| Henn Matthew R. | President and Chief Scientific Officer | Feb 2019 | Aug 18, 2026 | 4 · $0.00 |
| Brady Kelly | EVP, Chief Operating Officer | Mar 2026 | Aug 18, 2026 | 2 · $0.00 |
| Desrosier Thomas | EVP and Chief Legal Officer | May 2016 | Aug 18, 2026 | 4 · $0.00 |
| Kender Richard N | Interim Chief Executive Officer | Jun 2015 | Jul 10, 2026 | none |
| Thorell Marella | EVP and Chief Financial Officer | Mar 2024 | Jul 10, 2026 | none |
| Young Teresa L. | EVP, Chief Commercial & Strategy Officer | Jul 2020 | Feb 18, 2026 | 2 · $0.00 |
Directorssales are open-market, Sep 30, 2025 to Sep 30, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Ausiello Dennis A | director | Jun 2015 | Jul 10, 2026 | none |
| Berenson Stephen | director | Aug 2019 | Jul 10, 2026 | none |
| Dere Willard H | director | Jul 2017 | Jul 10, 2026 | none |
| Fraser Claire | director | Jan 2023 | Jul 10, 2026 | none |
| Graves Kurt | director | Nov 2015 | Jul 10, 2026 | none |
| Rosiello Robert L. | director | Aug 2025 | Jul 10, 2026 | none |
Earlier names on the record34, newest filing first
Biondi Paul · director · last filing Apr 2025Von Moltke Lisa · officer · last filing Feb 2025Woerle Hans-Juergen · director · last filing Feb 2025Nestle SA · 10% owner · last filing Oct 2024Societe Des Produits Nestle S.A. · 10% owner · last filing Oct 2024Ege David S. · officer · last filing Aug 2024Arkowitz David · officer · last filing Feb 2024Cloghessy Paula · officer · last filing Oct 2023Behar Gregory · director · last filing Jun 2023Afeyan Noubar · director · last filing Jul 2022Flagship Pioneering Fund Vii General Partner LLC · 10% owner · last filing Jul 2022Flagship Pioneering Fund Vii, L.P. · 10% owner · last filing Jul 2022Flagship Pioneering Inc. · 10% owner · last filing Jul 2022Nutritional Health Ltp Fund General Partner LLC · 10% owner · last filing Jul 2022Nutritional Health Ltp Fund, L.P. · 10% owner · last filing Jul 2022Zausner Meryl · director · last filing Jul 2022Chapman Marcus · officer · last filing Feb 2021Flagship Pioneering Fund Vi General Partner LLC · 10% owner · last filing Nov 2020Flagship Pioneering Fund Vi, L.P. · 10% owner · last filing Nov 2020Flagship Ventures Fund IV General Partner LLC · 10% owner · last filing Nov 2020Flagship Ventures Fund IV-Rx, L.P. · 10% owner · last filing Nov 2020Flagship Ventures Fund IV, L.P. · 10% owner · last filing Nov 2020Aunins John G. · officer · last filing Jan 2020Pomerantz Roger · officer · last filing Jun 2019Kim Lorence H. · director · last filing Jun 2019Cook David N · officer · last filing Jan 2019Horgan Kevin · officer · last filing Jan 2019Trucksis Michele · officer · last filing Jan 2018Hashad Wael · officer · last filing Jan 2017Hutt Peter Barton · director · last filing Jun 2016Flagship Venturelabs IV, LLC · 10% owner · last filing May 2016Flagship Ventures 2007 General Partner LLC · 10% owner · last filing May 2016Flagship Ventures Fund 2007, L.P. · 10% owner · last filing May 2016Kania Edwin M Jr · 10% owner · last filing May 2016
A person is listed as reporting now after a filing in the last fifteen months. The record shows when someone last filed; it does not say why they stopped. Each name links to the filings on sec.gov.