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CIK 0001776111 · Non-accelerated filer<br>Smaller reporting company<br>Emerging growth company

MBX Biosciences, Inc.

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Ticker
MBX
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
FY end
Dec 31
Incorporated
DE
Entity type
operating
Phone
3179893100
Business address
11711 N. MERIDIAN STREET, SUITE 300, CARMEL, IN, 46032
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$288,361
in 2 filings

Net −$288,361. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Date Insider Transaction Shares Price Value Owned after
2025-10-24 Hawryluk P. Kent President & CEO Option exercise · Stock option (right to buy) −182,859 129,708
2025-10-20 Hawryluk P. Kent President & CEO Purchase +20,000 $13.64 $273K 468,277
2025-10-17 Hoerter Steven L. Director Purchase +20,000 $13.25 $265K 20,000
2025-09-26 Heron Patrick J Director Purchase +666,666 $18.00 $12.0M 5,219,440
2025-06-05 Mathers Edward T Director Grant or award · Stock option (right to buy) +16,000 16,000
2025-06-05 Hoerter Steven L. Director Grant or award · Stock option (right to buy) +16,000 16,000
2025-06-05 Aynechi Tiba Director Grant or award · Stock option (right to buy) +16,000 16,000
2025-06-05 CORNELIUS JAMES M Director Grant or award · Stock option (right to buy) +16,000 16,000
2025-06-05 Ryder Steven Director Grant or award · Stock option (right to buy) +16,000 16,000
2025-06-05 Heron Patrick J Director Grant or award · Stock option (right to buy) +16,000 16,000
2025-06-05 Pescovitz Ora H. Director Grant or award · Stock option (right to buy) +16,000 16,000
2025-04-08 Pescovitz Ora H. Director Purchase +7,693 $5.89 $45K 24,329
2025-04-07 Hoerter Steven L. Director Grant or award · Stock option (right to buy) +32,000 32,000
2025-02-18 GORDON CARL L Director Purchase +49,070 $10.84 $532K 3,255,000
2025-02-18 GORDON CARL L Director Purchase +94,100 $10.84 $1.0M 747,887
2025-02-18 ORBIMED ADVISORS LLC Director Purchase +49,070 $10.84 $532K 3,255,000
2025-02-18 ORBIMED ADVISORS LLC Director Purchase +94,100 $10.84 $1.0M 747,887
2025-02-14 GORDON CARL L Director Purchase +17,962 $9.90 $178K 3,176,390
2025-02-14 GORDON CARL L Director Purchase +29,540 $9.85 $291K 3,205,930
2025-02-14 ORBIMED ADVISORS LLC Director Purchase +17,962 $9.90 $178K 3,176,390

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