List of insiders holdings for MBX Biosciences, Inc.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | Heron Patrick J FHMLS X L.P. FHMLS X L.L.C. Topper James N Frazier Life Sciences X L.P. Director 10% Owner | 2025-09-30 16:59:56 | 0 5,219,440 | 5,219,440 | Form 4 |
| 2 | New Enterprise Associates 17 L.P. NEA Partners 17 L.P. NEA 17 GP LLC 10% Owner | 2025-11-10 17:08:55 | 3,619,474 0 | 3,619,474 | Form 13D |
| 3 | BASKETT FOREST 10% Owner | 2024-09-17 20:26:31 | 0 3,614,486 | 3,614,486 | Form 4 |
| 4 | Behbahani Ali 10% Owner | 2024-09-17 20:24:49 | 0 3,614,486 | 3,614,486 | Form 4 |
| 5 | Chang Carmen 10% Owner | 2024-09-17 20:23:24 | 0 3,614,486 | 3,614,486 | Form 4 |
| 6 | Florence Anthony A. Jr. 10% Owner | 2024-09-17 20:21:45 | 0 3,614,486 | 3,614,486 | Form 4 |
| 7 | Makhzoumi Mohamad 10% Owner | 2024-09-17 20:20:13 | 0 3,614,486 | 3,614,486 | Form 4 |
| 8 | Walker Paul Edward 10% Owner | 2024-09-17 20:18:53 | 0 3,614,486 | 3,614,486 | Form 4 |
| 9 | Yang Rick 10% Owner | 2024-09-17 20:17:16 | 0 3,614,486 | 3,614,486 | Form 4 |
| 10 | SANDELL SCOTT D 10% Owner | 2024-09-17 20:14:42 | 0 3,614,486 | 3,614,486 | Form 4 |
| 11 | ORBIMED ADVISORS LLC OrbiMed Capital GP VII LLC OrbiMed Genesis GP LLC Director 10% Owner | 2026-08-10 16:44:26 | 3,074,853 0 | 3,074,853 | Form 13D |
| 12 | Wellington Biomedical Innovation Master Investors (Cayman) II L.P. 10% Owner | 2025-11-12 18:44:54 | 2,017,394 0 | 2,017,394 | Form 13G |
| 13 | Hawryluk P. Kent President & CEO | 2026-05-08 16:00:52 | 727,667 486,777 | 1,214,444 | Form 4 |
| 14 | GORDON CARL L Director 10% Owner | 2025-02-19 17:56:33 | 0 747,887 | 747,887 | Form 4 |
| 15 | Hoerter Steven L. President and CEO | 2026-08-04 08:50:51 | 413,938 20,000 | 433,938 | Form 4 |
| 16 | Smither John W Chief Financial Officer | 2026-08-04 08:51:27 | 158,000 0 | 158,000 | Form 4 |
| 17 | Bartram Richard Chief Financial Officer | 2026-02-03 16:16:29 | 85,000 0 | 85,000 | Form 4 |
| 18 | Pescovitz Ora H. Director | 2026-06-05 07:59:21 | 36,829 0 | 36,829 | Form 4 |
| 19 | CORNELIUS JAMES M Director | 2025-06-06 08:04:19 | 16,000 0 | 16,000 | Form 4 |
| 20 | Azoulay Salomon Chief Medical Officer | 2026-08-05 16:57:04 | 14,399 0 | 14,399 | Form 4 |
| 21 | Heron Patrick J Director 10% Owner | 2026-06-05 07:59:00 | 12,500 0 | 12,500 | Form 4 |
| 22 | Stelzer Laurie Director | 2026-06-05 07:58:21 | 12,500 0 | 12,500 | Form 4 |
| 23 | Mathers Edward T Director | 2026-06-05 14:35:37 | 12,500 0 | 12,500 | Form 4 |
| 24 | Ryder Steven Director | 2026-06-05 07:54:18 | 12,500 0 | 12,500 | Form 4 |
| 25 | Aynechi Tiba Director | 2026-06-05 07:53:56 | 12,500 0 | 12,500 | Form 4 |