Crescent Biopharma, Inc. (CBIO)
Nasdaq: CBIO · Pharmaceutical Preparations · Waltham, MA · filing with the SEC since 2003
Who runs Crescent Biopharma, Inc.
Officers and directors as they report to the SEC on Forms 3, 4 and 5, named as filedChief executive, as filed
Brumm Joshua T
Chief Executive Officer. First filing Jun 2025, latest Sep 18, 2026, 2 filings in all.
Officers reporting now
8
of 16 people with a filing in the last fifteen months
Directors reporting now
8
35 people on the record since 2014
Officerssales are open-market, Sep 30, 2025 to Sep 30, 2026
| Name | Title as filed | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Brumm Joshua T | Chief Executive Officer | Jun 2025 | Sep 18, 2026 | 3 · $900,000 |
| Lynch Ryan | Treasurer, Senior Vice President of Finance and Chief Accounting Officer. | Jun 2025 | Sep 18, 2026 | 2 · $0.00 |
| Mcneill Jonathan | President and COO | Jun 2025 | Sep 18, 2026 | 3 · $400,000 |
| Scalzo Richard William | Chief Financial Officer | Jun 2025 | Sep 18, 2026 | 2 · $0.00 |
| Im Ellie Eunkyung | Chief Medical Officer | Jun 2025 | Sep 18, 2026 | 2 · $0.00 |
| Pinkas Jan | Chief Scientific Officer | Jul 2025 | Sep 18, 2026 | 2 · $0.00 |
| Bispham Barbara Harlin | General Counsel and Corporate Secretary. | Jun 2025 | Sep 18, 2026 | 2 · $0.00 |
| Doughty Christopher Grant | Chief Business Officer | Jun 2025 | Dec 17, 2025 | none |
Directorssales are open-market, Sep 30, 2025 to Sep 30, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Fairmount Funds Management LLC | director | Jun 2025 | Jul 20, 2026 | none |
| Fairmount Healthcare Fund II L.P. | director | Jun 2025 | Jul 20, 2026 | none |
| Harwin Peter Evan | director | Jun 2025 | Jul 20, 2026 | none |
| Kiselak Tomas | director | Jun 2025 | Jul 20, 2026 | none |
| Balcom Alexandra | director | Jun 2025 | Jun 3, 2026 | none |
| Lubner David Charles | director | Jun 2025 | Jun 3, 2026 | none |
| Moran Susan | director | Jun 2025 | Jun 3, 2026 | none |
| Violin Jonathan | director | Jun 2025 | Jun 3, 2026 | none |
Earlier names on the record39, newest filing first
Biotechnology Value Fund II LP · other · last filing Jun 2025Biotechnology Value Fund L P · 10% owner · last filing Jun 2025Biotechnology Value Trading Fund Os LP · other · last filing Jun 2025Bvf Gp Holdings LLC · 10% owner · last filing Jun 2025Bvf I Gp LLC · 10% owner · last filing Jun 2025Bvf II Gp LLC · other · last filing Jun 2025Bvf Inc/il · 10% owner · last filing Jun 2025Bvf Partners L P/il · 10% owner · last filing Jun 2025Bvf Partners Os Ltd. · other · last filing Jun 2025Lampert Mark N · 10% owner · last filing Jun 2025Debbane Raymond · 10% owner · last filing Aug 2024Invus Global Management, LLC · 10% owner · last filing Aug 2024Invus Public Equities Advisors, LLC · 10% owner · last filing Aug 2024Invus Public Equities, L.P. · 10% owner · last filing Aug 2024Siren, L.L.C. · 10% owner · last filing Aug 2024Rock Edwin · officer · last filing Jun 2024Hahn Brian M. · officer · last filing Jun 2024King Rachel K. · officer · last filing May 2024Andrews Patricia S · director · last filing May 2024Goldberg Mark Alan · director · last filing May 2024Jackson Scott Thomas · director · last filing May 2024Junius Daniel M · director · last filing May 2024Koenig Scott · director · last filing May 2024Pearson Timothy R · director · last filing May 2024Semerjian Harout · officer · last filing Jan 2024Johnson Bruce S · officer · last filing Jan 2024Rath Chinmaya · officer · last filing Jan 2024Artal Group S.A. · 10% owner · last filing Feb 2023Artal International Management S.A. · 10% owner · last filing Feb 2023Artal International S.C.A. · 10% owner · last filing Feb 2023Stichting Administratiekantoor Westend · 10% owner · last filing Feb 2023Westend S.A. · 10% owner · last filing Feb 2023Girard Armand · officer · last filing Nov 2022Magnani John L. · officer · last filing Nov 2022Feldman Eric Jay · officer · last filing Mar 2021Thackray Helen M. · officer · last filing Jan 2021Barrett M James · director · last filing May 2018Baldwin John J. · director · last filing Jul 2016Top Franklin H Jr · director · 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.