MBX Biosciences, Inc.
Total Trades
4
Buys
4
Sells
0
Largest Trade
$1M+
Insiders
4
Institutional Funds
96
Inst. Value
$1M+
Activist Filings
22
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Hawryluk P. Kent | President & CEO | BUY | $100K–$500K | 20K | $13.64 | Oct 21, 2025 |
| Hoerter Steven L. | Director | BUY | $100K–$500K | 20K | $13.25 | Oct 20, 2025 |
| Heron Patrick J | Director | BUY | $1M+ | 667K | $18.00 | Sep 30, 2025 |
| Pescovitz Ora H. | Director | BUY | $15K–$50K | 8K | $5.89 | Apr 10, 2025 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 96 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| Frazier Life Sciences Management, L.P. | 6.7M | $1M+ | SH |
| ORBIMED ADVISORS LLC | 3.9M | $1M+ | SH |
| NEA Management Company, LLC | 3.6M | $1M+ | SH |
| Deep Track Capital, LP | 3.2M | $1M+ | SH |
| NVP Associates, LLC | 2.1M | $1M+ | SH |
| Cormorant Asset Management, LP | 1.1M | $1M+ | SH |
| BRAIDWELL LP | 1.0M | $1M+ | SH |
| EVENTIDE ASSET MANAGEMENT, LLC | 890K | $1M+ | SH |
| Point72 Asset Management, L.P. | 681K | $1M+ | SH |
| STATE STREET CORP | 673K | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 564K | $1M+ | SH |
| Soleus Capital Management, L.P. | 409K | $1M+ | SH |
| Trails Edge Capital Partners, LP | 315K | $1M+ | SH |
| UBS Group AG | 281K | $1M+ | SH |
| Affinity Asset Advisors, LLC | 250K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 222K | $1M+ | SH |
| Goelzer Investment Management, Inc. | 222K | $1M+ | SH |
| Schonfeld Strategic Advisors LLC | 167K | $1M+ | SH |
| VANGUARD GROUP INC | 166K | $1M+ | SH |
| KVP Capital Advisors, LP | 122K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13D/A · Feb 11, 2026
7.7%
3.6M shares
Wellington Management Group LLP
SC 13G/A · Feb 10, 2026
7.5%
3.3M shares
SC 13G · Jan 21, 2026
5.1%
2.3M shares
SC 13G/A · Nov 14, 2025
4.3%
2.0M shares
Wellington Biomedical Innovation Master Investors (Cayman) II, L.P.
SC 13G/A · Nov 12, 2025
4.5%
2.0M shares
New Enterprise Associates 17, L.P.
SC 13D/A · Nov 10, 2025
8.1%
3.6M shares
Wellington Management Group LLP
SC 13G/A · Oct 6, 2025
10.8%
4.8M shares
SC 13D/A · Sep 30, 2025
9.0%
4.0M shares
Norwest Venture Partners XVI, LP
SC 13D/A · Sep 30, 2025
4.8%
2.1M shares
Frazier Life Sciences Public Fund, L.P.
SC 13D/A · Sep 30, 2025
2.5%
1.1M shares
Frazier Life Sciences Public Fund, L.P.
SC 13D/A · Aug 20, 2025
3.3%
1.1M shares
SC 13G/A · Aug 14, 2025
6.5%
2.2M shares
Wellington Management Group LLP
SC 13G/A · Aug 12, 2025
6.8%
2.3M shares
Wellington Management Group LLP
SC 13G/A · May 12, 2025
7.9%
2.6M shares
Wellington Management Group LLP
SC 13G · Nov 8, 2024
9.2%
2.9M shares
SC 13G · Nov 1, 2024
5.5%
1.9M shares
Norwest Venture Partners XVI, LP
SC 13D · Sep 23, 2024
6.4%
2.1M shares
New Enterprise Associates 17, L.P.
SC 13D · Sep 23, 2024
11.4%
3.6M shares
SC 13D · Sep 23, 2024
12.0%
3.8M shares
SC 13G · Sep 23, 2024
9.5%
3.0M shares
Frazier Life Sciences Public Fund, L.P. 2.
SC 13D · Sep 23, 2024
3.5%
1.1M shares
Wellington Biomedical Innovation Master Investors (Cayman) II, L.P.
SC 13G · Sep 20, 2024
5.6%
1.8M shares