ARCELLX INC

Ticker: ACLX CUSIP: 03940C100 Class: Common Stock

BlackRock, Inc.'s Holding History (CIK: 0002012383)

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

Q4 2025

Shares 3,548,787 Value ($000) $231,381 Avg Close $79.78 Range $63.03 - $94.07

Q3 2025

Shares 3,387,896 Value ($000) $278,146 Avg Close $71.99 Range $63.13 - $83.08

Q2 2025

Shares 3,468,184 Value ($000) $228,380 Avg Close $62.26 Range $47.86 - $69.84

Q1 2025

Shares 3,967,569 Value ($000) $260,272 Avg Close $67.74 Range $57.17 - $81.00

Q4 2024

Shares 3,854,021 Value ($000) $295,565 Avg Close $86.39 Range $73.33 - $107.37

Q3 2024

Shares 4,246,692 Value ($000) $354,641 Avg Close $66.59 Range $49.00 - $88.66

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	3,548,787	$231,381	$79.78	$63.03 - $94.07
Q3 2025	3,387,896	$278,146	$71.99	$63.13 - $83.08
Q2 2025	3,468,184	$228,380	$62.26	$47.86 - $69.84
Q1 2025	3,967,569	$260,272	$67.74	$57.17 - $81.00
Q4 2024	3,854,021	$295,565	$86.39	$73.33 - $107.37
Q3 2024	4,246,692	$354,641	$66.59	$49.00 - $88.66