Form4insider filings, from the source

Insider holders · CIK 0001776111

MBX Biosciences, Inc. · MBX

Every insider with a reported Table I holding at this company, ranked by their last-reported share count. A balance is only as fresh as its filing — the report date sits next to every row on purpose. ← Back to activity

InsiderDirect sharesIndirect sharesTotal reportedLast report (ET)From
Steven L. HoerterPresident and CEO82,93820,000102,938Aug 4, 2026 · 8:50 am EDTForm 4
John W SmitherChief Financial Officer28,000—28,000Aug 4, 2026 · 8:51 am EDTForm 4
Ora H. PescovitzDirector24,329—24,329Jun 5, 2026 · 7:59 am EDTForm 4
Salomon AzoulayChief Medical Officer14,399—14,399Aug 5, 2026 · 4:57 pm EDTForm 4

Balances come from each insider’s most recent filing that reports a Table I holding; an insider who left the company years ago still appears with their last-known figure and its date. Indirect totals collapse multiple vehicles (trusts, LLCs) into one number — open the filing for the breakdown. Shares as filed, not split-adjusted.