ACLX

Arcellx, Inc.

Biological Products, (No Diagnostic Substances)NasdaqLarge accelerated filer

Total Trades

138

Buys

Sells

Largest Trade

N/A

Insiders

Institutional Funds

170

Inst. Value

$1M+

Activist Filings

Insider Trades

Insider	Title	Type	Value	Shares	Price	Date
Heery Christopher	Chief Medical Offi…	SELL	$50K–$100K	3K	$31.75	Jul 6, 2023
Heery Christopher	Chief Medical Offi…	EXERCISE	$15K–$50K	3K	$15.00	Jul 6, 2023
Elghandour Rami	See Remarks	SELL	$100K–$500K	3K	$44.27	Jun 2, 2023
Carroll Jill	Director	SELL	$1M+	341K	$41.71	Jun 2, 2023
Gilson Michelle	CFO	EXERCISE	N/A	22K	—	May 26, 2023
Gilson Michelle	CFO	SELL	$500K+	15K	$42.58	May 26, 2023
Carroll Jill	Director	SELL	$1M+	638K	$45.01	May 15, 2023
SR ONE CAPITAL MANAGEMENT, LLC	10% Owner	SELL	$1M+	1.0M	$45.01	May 15, 2023
Heery Christopher	Chief Medical Offi…	SELL	$100K–$500K	3K	$45.15	May 11, 2023
Heery Christopher	Chief Medical Offi…	SELL	$50K–$100K	1K	$45.00	May 8, 2023
Heery Christopher	Chief Medical Offi…	SELL	$100K–$500K	3K	$43.44	May 5, 2023
Heery Christopher	Chief Medical Offi…	EXERCISE	$15K–$50K	3K	$15.00	May 5, 2023
Heery Christopher	Chief Medical Offi…	EXERCISE	$100K–$500K	20K	$10.64	Apr 26, 2023
Heery Christopher	Chief Medical Offi…	SELL	$500K+	20K	$40.00	Apr 26, 2023
Heery Christopher	Chief Medical Offi…	SELL	$500K+	22K	$35.01	Apr 20, 2023
Heery Christopher	Chief Medical Offi…	EXERCISE	$100K–$500K	18K	$12.25	Apr 20, 2023
Heery Christopher	Chief Medical Offi…	EXERCISE	$15K–$50K	3K	$15.00	Apr 4, 2023
Heery Christopher	Chief Medical Offi…	SELL	$50K–$100K	3K	$30.71	Apr 4, 2023
Heery Christopher	Chief Medical Offi…	SELL	$100K–$500K	7K	$30.77	Feb 10, 2023
Heery Christopher	Chief Medical Offi…	EXERCISE	N/A	23K	—	Feb 10, 2023
Elghandour Rami	See Remarks	SELL	$500K+	31K	$30.77	Feb 10, 2023
Elghandour Rami	See Remarks	EXERCISE	N/A	70K	—	Feb 10, 2023
Heery Christopher	Chief Medical Offi…	EXERCISE	$15K–$50K	1K	$12.22	Feb 7, 2023
Heery Christopher	Chief Medical Offi…	SELL	$15K–$50K	1K	$35.11	Feb 7, 2023
Heery Christopher	Chief Medical Offi…	SELL	$50K–$100K	3K	$31.11	Jan 5, 2023
Heery Christopher	Chief Medical Offi…	EXERCISE	$15K–$50K	3K	$15.00	Jan 5, 2023
SANDELL SCOTT D	10% Owner	SELL	$1K–$15K	390	$31.67	Dec 27, 2022
SANDELL SCOTT D	10% Owner	SELL	$1K–$15K	179	$30.74	Dec 22, 2022
Makhzoumi Mohamad	10% Owner	SELL	$1K–$15K	179	$30.74	Dec 22, 2022
Florence Anthony A. Jr.	10% Owner	SELL	$1K–$15K	179	$30.74	Dec 22, 2022
BASKETT FOREST	10% Owner	SELL	$50K–$100K	2K	$31.45	Dec 22, 2022
Heery Christopher	Chief Medical Offi…	SELL	$100K–$500K	13K	$30.03	Dec 14, 2022
Heery Christopher	Chief Medical Offi…	EXERCISE	$100K–$500K	13K	$11.51	Dec 14, 2022
New Enterprise Associates 15, L.P.	10% Owner	BUY	$1M+	313K	$16.00	Jun 23, 2022
SR ONE CAPITAL MANAGEMENT, LLC	10% Owner	BUY	$1M+	1.7M	$15.00	Feb 10, 2022
New Enterprise Associates 15, L.P.	10% Owner	BUY	$1M+	1.6M	$15.00	Feb 9, 2022
Carroll Jill	Director	BUY	$1M+	1.7M	$15.00	Feb 9, 2022
Novo Holdings A/S	10% Owner	BUY	$1M+	833K	$15.00	Feb 9, 2022

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Institutional Ownership

13F filings as of Dec 31, 2025 · 170 funds holding

Fund	Shares	Value	Type
GILEAD SCIENCES, INC.	6.7M	$1M+	SH
NEA Management Company, LLC	3.0M	$1M+	SH
SR ONE CAPITAL MANAGEMENT, LP	2.3M	$1M+	SH
STATE STREET CORP	2.0M	$1M+	SH
PERCEPTIVE ADVISORS LLC	1.5M	$1M+	SH
RA CAPITAL MANAGEMENT, L.P.	1.3M	$1M+	SH
GEODE CAPITAL MANAGEMENT, LLC	828K	$1M+	SH
Affinity Asset Advisors, LLC	524K	$1M+	SH
LORD, ABBETT & CO. LLC	438K	$1M+	SH
AMERICAN CENTURY COMPANIES INC	419K	$1M+	SH
Hudson Bay Capital Management LP	401K	$1M+	SH
Pictet Asset Management Holding SA	343K	$1M+	SH
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	340K	$1M+	SH
Fisher Asset Management, LLC	323K	$1M+	SH
VANGUARD GROUP INC	302K	$1M+	SH
TD ASSET MANAGEMENT INC	301K	$1M+	SH
AJU IB Investment Co., Ltd.	223K	$1M+	SH
BARCLAYS PLC	197K	$1M+	SH
CITIGROUP INC	156K	$1M+	SH
GOLDMAN SACHS GROUP INC	142K	$1M+	SH