MBX BIOSCIENCES INC

Ticker: MBX CUSIP: 55287L101 Class: Common Stock

ALLIANCEBERNSTEIN L.P.'s Holding History (CIK: 0001109448)

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

Q4 2025

Shares 27,900 Value ($000) $880 Avg Close $24.26 Range $12.94 - $35.55

Q3 2025

Shares 10,500 Value ($000) $184 Avg Close $13.37 Range $9.63 - $26.47

Q2 2025

Shares 10,500 Value ($000) $120 Avg Close $10.19 Range $4.81 - $14.34

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	27,900	$880	$24.26	$12.94 - $35.55
Q3 2025	10,500	$184	$13.37	$9.63 - $26.47
Q2 2025	10,500	$120	$10.19	$4.81 - $14.34