MBX Biosciences, Inc.MBX

3 13D/G filings 3 distinct filers 0 insider transactions (365d)

Post-Filing Returns · across 3 activist filings on this issuer

Median 30d

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Median 60d

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Median 90d

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Median 180d

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Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.

Activist filings

3 SCHEDULE

Distinct filers

multi-activist cluster

Insiders (365d)

0 buys · 0 sales

Latest short DTC

7.97

as of 2026-03-31

Held by elite portfolio managers

1 holder · $21.47M

Point72 Asset Mgmt

Filed	Form	Filer	Stake	Shares
2025-09-30	SCHEDULE	Frazier Life Sciences Public Fund, L.P.	11.70%	5,224,095	view →
2025-09-30	SCHEDULE	ORBIMED ADVISORS LLC	9.00%	4,002,887	view →
2025-09-30	SCHEDULE	Norwest Venture Partners XVI, LP	4.80%	2,140,989	view →

Settlement	Short Interest	Days to Cover	% Δ vs prior
2026-03-31	3,593,407	7.97	+20.4%
2026-03-13	2,983,725	5.00	+24.6%
2026-02-27	2,395,339	4.50	+8.7%
2026-02-13	2,202,822	3.08	+12.1%
2026-01-30	1,965,975	3.07	-14.8%
2026-01-15	2,307,824	2.88	-40.0%
2025-12-31	3,843,943	4.41	+6.4%
2025-12-15	3,611,905	4.34	-11.9%

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