MBX Biosciences, Inc. (MBX)
Nasdaq: MBX · Pharmaceutical Preparations · Carmel, IN · filing with the SEC since 2019
Who runs MBX Biosciences, Inc.
Officers and directors as they report to the SEC on Forms 3, 4 and 5, named as filedChief executive, as filed
Hoerter Steven L.
Chairman, President and CEO. First filing Apr 2025, latest Nov 12, 2026, 2 filings in all.
Officers reporting now
5
of 12 people with a filing in the last fifteen months
Directors reporting now
7
17 people on the record since 2024
Officerssales are open-market, Nov 12, 2025 to Nov 12, 2026
| Name | Title as filed | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Hoerter Steven L. | Chairman, President and CEO | Apr 2025 | Nov 12, 2026 | 1 · $300,000 |
| Azoulay Salomon | Chief Medical Officer | Sep 2024 | Nov 5, 2026 | 5 · $2.7M |
| Smither John W | Chief Financial Officer | Mar 2026 | Aug 4, 2026 | none |
| Hawryluk P. Kent | President & CEO | Sep 2024 | May 8, 2026 | 1 · $0.00 |
| Bartram Richard | Chief Financial Officer | Sep 2024 | Feb 3, 2026 | none |
Directorssales are open-market, Nov 12, 2025 to Nov 12, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Radovich Peter | director | Oct 2026 | Oct 22, 2026 | none |
| Aynechi Tiba | director | Sep 2024 | Jun 5, 2026 | none |
| Heron Patrick J | director | Sep 2024 | Jun 5, 2026 | none |
| Mathers Edward T | director | Sep 2024 | Jun 5, 2026 | none |
| Pescovitz Ora H. | director | Sep 2024 | Jun 5, 2026 | none |
| Ryder Steven | director | Sep 2024 | Jun 5, 2026 | none |
| Stelzer Laurie | director | Jan 2026 | Jun 5, 2026 | none |
Owners of more than 10% of a classsales are open-market, Nov 12, 2025 to Nov 12, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Fhmls X, L.L.C. | 10% owner | Sep 2024 | Sep 30, 2025 | none |
| Fhmls X, L.P. | 10% owner | Sep 2024 | Sep 30, 2025 | none |
| Frazier Life Sciences X, L.P. | 10% owner | Sep 2024 | Sep 30, 2025 | none |
| Topper James N | 10% owner | Sep 2024 | Sep 30, 2025 | none |
Earlier names on the record17, newest filing first
Cornelius James M · director · last filing Jun 2025Gordon Carl L · director · last filing Feb 2025Orbimed Advisors LLC · director · last filing Feb 2025Orbimed Capital Gp Vii LLC · director · last filing Feb 2025Orbimed Genesis Gp LLC · director · last filing Feb 2025Baskett Forest · 10% owner · last filing Sep 2024Behbahani Ali · 10% owner · last filing Sep 2024Chang Carmen · 10% owner · last filing Sep 2024Florence Anthony A. Jr. · 10% owner · last filing Sep 2024Makhzoumi Mohamad · 10% owner · last filing Sep 2024Nea 17 Gp, LLC · 10% owner · last filing Sep 2024Nea Partners 17, L.P. · 10% owner · last filing Sep 2024New Enterprise Associates 17, L.P. · 10% owner · last filing Sep 2024Sandell Scott D · 10% owner · last filing Sep 2024Walker Paul Edward · 10% owner · last filing Sep 2024Wellington Biomedical Innovation Master Investors (Cayman) II L.P. · 10% owner · last filing Sep 2024Yang Rick · 10% owner · last filing Sep 2024
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.