Smither John W bought MBX
August 3, 2026 · Form 4 insider transaction
Smither John W bought 28,000 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
28,000
Price
$0.00
Total value
N/A
InsiderSmither John W
RoleOfficer, Director
CompanyMBX Biosciences, Inc. (MBX)
SecurityCommon Stock
Transaction codeA: Grant or award
Transaction dateAugust 3, 2026
Filing dateAugust 4, 2026
Shares owned after28,000
OwnershipDirect
10b5-1 planNo
AmendedNo
Footnotes
Represents the grant of restricted stock units ("RSUs"). 25% of the shares subject to the RSU grant will vest annually over four years, on each July 13, 2027, 2028, 2029 and 2030, subject to continued service on each such vesting date.