ARCELLX INC

Ticker: ACLX CUSIP: 03940C100 Class: Common Stock

AMERICAN CENTURY COMPANIES INC's Holding History (CIK: 0000748054)

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

Q4 2025

Shares 419,080 Value ($000) $27,324 Avg Close $79.78 Range $63.03 - $94.07

Q3 2025

Shares 411,930 Value ($000) $33,820 Avg Close $71.99 Range $63.13 - $83.08

Q2 2025

Shares 431,466 Value ($000) $28,412 Avg Close $62.26 Range $47.86 - $69.84

Q1 2025

Shares 54,321 Value ($000) $3,563 Avg Close $67.74 Range $57.17 - $81.00

Q4 2024

Shares 29,446 Value ($000) $2,258 Avg Close $86.39 Range $73.33 - $107.37

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	419,080	$27,324	$79.78	$63.03 - $94.07
Q3 2025	411,930	$33,820	$71.99	$63.13 - $83.08
Q2 2025	431,466	$28,412	$62.26	$47.86 - $69.84
Q1 2025	54,321	$3,563	$67.74	$57.17 - $81.00
Q4 2024	29,446	$2,258	$86.39	$73.33 - $107.37