SMITHER JOHN W

PrivateCIK: 1559583
Location

WESTLAKE VILLAGE, CA

SMITHER JOHN W (Chief Financial Officer) received a stock award from MBX BIOSCIENCES, INC.

Compensation award — not an open‑market transaction. Less informative as a directional signal.

A · 1 award
InsiderSMITHER JOHN WCIK 1559583
IssuerMBX BIOSCIENCES, INC.CIK 1776111
Officer· Chief Financial Officer
Since Mar 2026
+158K
Net shares
Net buyer
$0.00
Total acquired
0
Open market trades
0B · 0S
2
Total transactions
158K acquired
Non-Derivative Transactions1

Common Stock

Direct
A · Award

Shares

+28K

Price / share

Trade value

% of position

New position
8/3/2026
0.0028K
Total

Net shares

+28K

Net value

$0.00

Derivative Transactions1

Stock option (right to buy)

Direct
A · Award
Converts to

Common Stock

130K shares

Shares

+130K

Strike price

64.41

Held after

130K

Exercisable

8/3/2026