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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
2026-05-08 Azoulay Salomon Chief Medical Officer Option exercise · Stock option (right to buy) 10b5-1 +15,003 30,008
2026-05-06 Azoulay Salomon Chief Medical Officer Sale −231 $29.54 $7K 14,769
2026-05-06 Hawryluk P. Kent President & CEO Sale −607 $29.54 $18K 727,667
2026-05-01 Hoerter Steven L. Director Grant or award +11,938 11,938
2026-05-01 Hoerter Steven L. Director Grant or award · Stock option (right to buy) +74,249 74,249
2026-03-13 Hawryluk P. Kent President & CEO Purchase +18,500 $28.41 $526K 486,777
2026-02-26 Hawryluk P. Kent President & CEO Option exercise +28,768 $16.00 $460K 728,274
2026-02-26 Hawryluk P. Kent President & CEO Option exercise · Stock option (right to buy) −28,768 91,668
2026-02-02 Azoulay Salomon Chief Medical Officer Grant or award +15,000 15,000
2026-02-02 Azoulay Salomon Chief Medical Officer Grant or award · Stock option (right to buy) +70,000 70,000
2026-02-02 Bartram Richard Chief Financial Officer Grant or award +15,000 15,000
2026-02-02 Bartram Richard Chief Financial Officer Grant or award · Stock option (right to buy) +70,000 70,000
2026-02-02 Hawryluk P. Kent President & CEO Grant or award +35,250 699,506
2026-02-02 Hawryluk P. Kent President & CEO Grant or award · Stock option (right to buy) +164,500 164,500
2026-01-20 Stelzer Laurie Director Grant or award · Stock option (right to buy) +32,000 32,000
2025-11-22 Hoerter Steven L. Director Grant or award · Stock option (right to buy) +0 0
2025-11-22 Hoerter Steven L. Director Grant or award · Stock option (right to buy) +8,000 8,000
2025-11-06 Hoerter Steven L. Director Grant or award · Stock option (right to buy) +33,751 33,751
2025-11-06 Hoerter Steven L. Director Grant or award · Stock option (right to buy) +100,000 100,000
2025-10-24 Hawryluk P. Kent President & CEO Option exercise +182,859 $3.25 $594K 664,256

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