ARCELLX INC

Ticker: ACLX CUSIP: 03940C100 Class: Common Stock

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

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

Q4 2025

Shares 8,442 Value ($000) $550 Avg Close $79.78 Range $63.03 - $94.07

Q2 2025

Shares 111,808 Value ($000) $7,363 Avg Close $62.26 Range $47.86 - $69.84

Q1 2025

Shares 15,400 Value ($000) $1,010 Avg Close $67.74 Range $57.17 - $81.00

Q1 2024

Shares 3,300 Value ($000) $230 Avg Close $63.42 Range $51.37 - $75.10

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	8,442	$550	$79.78	$63.03 - $94.07
Q2 2025	111,808	$7,363	$62.26	$47.86 - $69.84
Q1 2025	15,400	$1,010	$67.74	$57.17 - $81.00
Q1 2024	3,300	$230	$63.42	$51.37 - $75.10