MBX BIOSCIENCES INC

Ticker: MBX CUSIP: 55287L101 Class: Common Stock

JANE STREET GROUP, LLC's Holding History (CIK: 0001595888)

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

Q4 2025

Shares 86,581 Value ($000) $2,731 Avg Close $24.26 Range $12.94 - $35.55

Q3 2024

Shares 26,570 Value ($000) $690 Avg Close $22.87 Range $20.29 - $26.19

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	86,581	$2,731	$24.26	$12.94 - $35.55
Q3 2024	26,570	$690	$22.87	$20.29 - $26.19