Institutional Ownership
Mbx Biosciences Inc
CUSIP 55287L101COMMBXQ1 2026
13D / 13G Filings
22
Schedule 13D/13G on record
Beneficial Filers
12
Distinct reporting persons
Largest Stake
13.6%
Max % of class reported
Institutional Holders
150
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
22 filings · latest Feb 11, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 11, 2026 | Orbimed Advisors LLC | 13D/A | 7.7% | — | SEC |
| 2 | Feb 10, 2026 | Wellington Management Group LLP | 13G/A | 7.5% | 3.35M | SEC |
| 3 | Jan 21, 2026 | Blackrock, Inc. | 13G | 5.1% | 2.27M | SEC |
| 4 | Nov 14, 2025 | P. Kent Hawryluk | 13G/A | 4.3% | 2.00M | SEC |
| 5 | Nov 12, 2025 | Wellington Biomedical Innovation Master Investors (Cayman) II, L.P. | 13G/A | 4.5% | 2.02M | SEC |
| 6 | Nov 10, 2025 | New Enterprise Associates 17, L.P. | 13D/A | 8.1% | — | SEC |
| 7 | Oct 6, 2025 | Wellington Management Group LLP | 13G/A | 10.8% | 4.82M | SEC |
| 8 | Sep 30, 2025 | Norwest Venture Partners Xvi, LP | 13D/A | 4.8% | — | SEC |
| 9 | Sep 30, 2025 | Frazier Life Sciences Public Fund, L.P. | 13D/A | 11.7% | — | SEC |
| 10 | Sep 30, 2025 | Orbimed Advisors LLC | 13D/A | 9.0% | — | SEC |
12 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Mbx Biosciences Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Frazier Life Sciences Management, L.P. | 6.65M | $198.56M |
| 2 | Orbimed Advisors LLC | 3.64M | $108.59M |
| 3 | Nea Management Company, LLC | 3.61M | $107.89M |
| 4 | Wellington Management Group LLP | 3.19M | $95.28M |
| 5 | Blackrock, Inc. | 2.94M | $87.80M |
| 6 | Fmr LLC | 2.94M | $87.66M |
| 7 | Deep Track Capital, LP | 2.76M | $82.31M |
| 8 | Nvp Associates, LLC | 2.14M | $63.77M |
| 9 | Polar Capital Holdings PLC | 1.62M | $48.42M |
| 10 | Braidwell LP | 1.49M | $44.55M |