InsiderTrades

Form 4 for MBX MBX Biosciences, Inc.

Accepted 2025-10-20 00:00:00 ET · period of report 2025-10-17 · accession 0001193125-25-243653 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
I 2025-10-20 2025-10-17 MBX Hoerter Steven L. Dir P - Purchase $13.25 +20.0K 20.0K New +$265.0K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2025-10-17 P A 20,000 $13.25 20,000 I By Trust — — (F1) Shares held by the Steven L Hoerter Revocable Trust dated November 2, 2018, of which the Reporting Person serves as trustee. The Reporting Person disclaims beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by him for Section 16 or any other purpose.