MBX Biosciences, Inc. - Common Stock, par value $0.0001 per share (MBX)

Historical Holders from Q3 2024 to Q3 2025

Symbol
MBX on Nasdaq
Type / Class
Equity / Common Stock, par value $0.0001 per share
Shares outstanding
46,413,000
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares, excl. options
47,790,065
Holdings value
$836,364,494
% of all portfolios
0%
Number of holders
117
Number of buys
67
Number of sells
-39
Average buys %
+0%
Average sells %
-0%
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of MBX Biosciences, Inc. - Common Stock, par value $0.0001 per share (MBX)

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Frazier Life Sciences Public Fund, L.P. 11.7% -13.6% $72,562,680 +$9,264,602 5,224,095 +14.6% Patrick J. Heron 26 Sep 2025
WELLINGTON MANAGEMENT GROUP LLP 10.8% +57.1% $84,412,239 +$44,744,435 4,823,336 +113% Wellington Management Group LLP 30 Sep 2025
ORBIMED ADVISORS LLC 9% $55,600,100 4,002,887 ORBIMED ADVISORS LLC 26 Sep 2025
New Enterprise Associates 17, L.P. 8.1% $63,340,795 3,619,474 Edward T. Mathers 06 Nov 2025
Deep Track Capital, LP 6.55% $28,604,897 2,188,592 Deep Track Capital, LP 30 Jun 2025
Norwest Venture Partners XVI, LP 4.8% $29,738,337 2,140,989 Tiba Aynechi 26 Sep 2025
Wellington Biomedical Innovation Master Investors (Cayman) II L.P. 4.5% $35,304,395 2,017,394 Wellington Biomedical Innovation Master Investors (Cayman) II, L.P. 30 Sep 2025
Hawryluk P. Kent 4.3% $34,925,782 1,995,759 P. Kent Hawryluk 30 Sep 2025

Institutional Holders of MBX Biosciences, Inc. - Common Stock, par value $0.0001 per share (MBX)

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price Investors
2025 Q3 47,790,065 $836,364,494 +$203,956,820 $17.50 117
2025 Q2 36,839,365 $420,338,016 +$15,667,999 $11.41 87
2025 Q1 35,666,401 $263,219,997 +$14,436,597 $7.38 79
2024 Q4 32,941,714 $606,485,118 +$45,787,522 $18.43 63
2024 Q3 30,305,441 $784,071,713 +$784,024,689 $25.98 45