Hoerter Steven L. bought MBX

August 3, 2026 · Form 4 insider transaction

Hoerter Steven L. bought 331,000 shares of MBX Biosciences, Inc. at $0.00 per share, a transaction worth N/A. The trade was recorded as grant or award and disclosed on an SEC Form 4, filed 1 day after the transaction.

Direction
Acquired (buy-side)
Shares
331,000
Price
$0.00
Total value
N/A
RoleOfficer, Director
SecurityStock option (right to buy)
Transaction codeA: Grant or award
Transaction dateAugust 3, 2026
Filing dateAugust 4, 2026
Shares owned after331,000
OwnershipDirect
10b5-1 planNo
AmendedNo

Footnotes

The options will vest and become exercisable with 25% of the shares subject to the award vesting on July 13, 2027 and the remainder vesting in 36 equal monthly installments thereafter, subject to continued service on each such vesting date.

View the original Form 4 on SEC EDGAR