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MBX insider trading

MBX Biosciences, Inc. — open-market insider buys and $1M+ sells from SEC Forms 3, 4 and 5.
Insider buys · 24 mo
23
Bought · 24 mo
$153.7M
Buys · last 90 days
0 · $0
Most recent buy
2026-03-16

Cluster buy detected

3 insiders bought MBX within a short window (2025-09-26→2025-10-20), $12.5M in total — cluster score 74/100. Members see the buyers, the score breakdown and the chart.

See the cluster

Recent insider filings

FiledInsiderTypeSharesPriceValue
2026-05-11Azoulay Salomon
Chief Medical Officer
Sold55,000$38.38$2.1M
2026-03-16Hawryluk P. Kent
President & CEO
Bought18,500$28.41$526k
2025-10-21Hawryluk P. Kentcluster
President & CEO
Bought20,000$13.64$273k
2025-10-20Hoerter Steven L.cluster
Director
Bought20,000$13.25$265k
2025-09-30Heron Patrick Jcluster
Director · 10% owner
Bought666,666$18.00$12.0M
2025-04-10Pescovitz Ora H.
Director
Bought7,693$5.89$45k
2025-02-19GORDON CARL Lcluster
Director · 10% owner
Bought190,672$10.60$2.0M
2025-02-19ORBIMED ADVISORS LLCcluster
Director · 10% owner
Bought190,672$10.60$2.0M
2025-02-05Hawryluk P. Kentcluster
President & CEO
Bought50,000$10.69$534k
2024-09-17Mathers Edward Tcluster
Director · 10% owner
Bought500,000$16.00$8.0M
2024-09-17BASKETT FORESTcluster
10% owner
Bought500,000$16.00$8.0M
2024-09-17Behbahani Alicluster
10% owner
Bought500,000$16.00$8.0M
2024-09-17Chang Carmencluster
10% owner
Bought500,000$16.00$8.0M
2024-09-17Florence Anthony A. Jr.cluster
10% owner
Bought500,000$16.00$8.0M
2024-09-17Makhzoumi Mohamadcluster
10% owner
Bought500,000$16.00$8.0M
2024-09-17Walker Paul Edwardcluster
10% owner
Bought500,000$16.00$8.0M
2024-09-17Yang Rickcluster
10% owner
Bought500,000$16.00$8.0M
2024-09-17SANDELL SCOTT Dcluster
10% owner
Bought500,000$16.00$8.0M
2024-09-17ORBIMED ADVISORS LLCcluster
Director · 10% owner
Bought750,000$16.00$12.0M
2024-09-17NEA 17 GP, LLCcluster
10% owner
Bought500,000$16.00$8.0M
2024-09-17FHMLS X, L.L.C.cluster
10% owner
Bought625,000$16.00$10.0M
2024-09-17Heron Patrick Jcluster
Director · 10% owner
Bought625,000$16.00$10.0M
2024-09-17Aynechi Tibacluster
Director
Bought750,000$16.00$12.0M
2024-09-17GORDON CARL Lcluster
Director · 10% owner
Bought750,000$16.00$12.0M

Most active insider buyers

InsiderRoleBuysTotal bought
Heron Patrick JDirector · 10% owner2$22.0M
GORDON CARL LDirector · 10% owner2$14.0M
ORBIMED ADVISORS LLCDirector · 10% owner2$14.0M
Aynechi TibaDirector1$12.0M
FHMLS X, L.L.C.10% owner1$10.0M
Mathers Edward TDirector · 10% owner1$8.0M

See MBX on the chart

Every insider buy and sell for MBX plotted on the price, the full two-year history, cluster scores and daily updates — in the members area, $29/month. A free quarterly sample of the whole dataset needs no account.

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Data from the SEC EDGAR ownership filings, refreshed daily. Only open-market purchases (transaction code P) and sales of $1M or more are shown; grants, option exercises and tax withholding are excluded because they run on schedules set years earlier. Not investment advice.