MBX BIOSCIENCES INC

Ticker: MBX CUSIP: 55287L101 Class: Common Stock

WELLINGTON MANAGEMENT GROUP LLP's Holding History (CIK: 0000902219)

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

Q4 2025

Shares 3,349,961 Value ($000) $105,658 Avg Close $24.26 Range $12.94 - $35.55

Q3 2025

Shares 4,823,336 Value ($000) $84,408 Avg Close $13.37 Range $9.63 - $26.47

Q2 2025

Shares 2,266,628 Value ($000) $25,862 Avg Close $10.19 Range $4.81 - $14.34

Q1 2025

Shares 2,638,521 Value ($000) $19,472 Avg Close $10.57 Range $7.16 - $19.39

Q4 2024

Shares 2,909,639 Value ($000) $52,992 Avg Close $21.31 Range $15.31 - $27.50

Q3 2024

Shares 2,937,853 Value ($000) $74,261 Avg Close $22.87 Range $20.29 - $26.19

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	3,349,961	$105,658	$24.26	$12.94 - $35.55
Q3 2025	4,823,336	$84,408	$13.37	$9.63 - $26.47
Q2 2025	2,266,628	$25,862	$10.19	$4.81 - $14.34
Q1 2025	2,638,521	$19,472	$10.57	$7.16 - $19.39
Q4 2024	2,909,639	$52,992	$21.31	$15.31 - $27.50
Q3 2024	2,937,853	$74,261	$22.87	$20.29 - $26.19