144
0001723729
XXXXXXXX
LIVE
0001776111
MBX Biosciences, Inc.
001-42272
11711 N. MERIDIAN STREET
SUITE 300
CARMEL
IN
46032
3179893100
Bartram Richard
Former Officer
Common
Fidelity Brokerage Services LLC
900 Salem Street
Smithfield
RI
02917
22500
991901.00
47597536
05/11/2026
NASDAQ
Common
05/11/2026
Option Granted - 04/20/2022
Issuer
N
5000
05/11/2026
Cash
Common
05/11/2026
Option Granted - 11/07/2022
Issuer
N
5000
05/11/2026
Cash
Common
05/11/2026
Option Granted - 08/15/2023
Issuer
N
7500
05/11/2026
Cash
Common
05/11/2026
Option Granted - 02/03/2025
Issuer
N
5000
05/11/2026
Cash
N
Richard B. Bartram
11711 N. Meridian Street, Suite 300
Carmel
IN
46032
Common
03/16/2026
10000
300471.00
Richard B. Bartram
11711 N. Meridian Street, Suite 300
Carmel
IN
48032
Common
03/25/2026
1061
30217.49
Richard B. Bartram
11711 N. Meridian Street, Suite 300
Carmel
IN
48032
Common
04/22/2026
10423
341377.72
Richard B. Bartram
11711 N. Meridian Street, Suite 300
Carmel
IN
48032
Common
05/01/2026
5000
159000.00
Richard B. Bartram
11711 N. Meridian Street
Suite 300
Carmel
IN
48032
Common
05/07/2026
10000
322050.00
Richard B. Bartram
11711 N. Meridian Street
Suite 300
Carmel
IN
48032
Common
05/08/2026
10000
379562.50
05/11/2026
/s/ Eric Janiak, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Richard B. Bartram