January 20, 2026 · Form 4 insider transaction
Stelzer Laurie bought 32,000 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 2 days after the transaction.
One-third of the shares underlying this option will vest and become exercisable on January 20, 2027, the anniversary of the date of grant, with the remainder vesting monthly over the subsequent two year period, subject to the Reporting Person's continued service on each such vesting date.