MBX BIOSCIENCES INC

Ticker: MBX CUSIP: 55287L101 Class: Common Stock

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 8,925 Value ($000) $281 Avg Close $24.26 Range $12.94 - $35.55

Q2 2025

Shares 411 Value ($000) $0 Avg Close $10.19 Range $4.81 - $14.34

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	8,925	$281	$24.26	$12.94 - $35.55
Q2 2025	411	$0	$10.19	$4.81 - $14.34