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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
2026-11-10 Hoerter Steven L. Chairman, President and CEO Sale −4,893 $54.82 $268K 78,045
2026-08-03 Hoerter Steven L. President and CEO Grant or award +71,000 82,938
2026-08-03 Hoerter Steven L. President and CEO Grant or award · Stock option (right to buy) +331,000 331,000
2026-06-04 Hoerter Steven L. Director Grant or award · Stock option (right to buy) +12,500 12,500
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
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
2025-10-17 Hoerter Steven L. Director Purchase +20,000 $13.25 $265K 20,000
2025-06-05 Hoerter Steven L. Director Grant or award · Stock option (right to buy) +16,000 16,000
2025-04-07 Hoerter Steven L. Director Grant or award · Stock option (right to buy) +32,000 32,000

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