Arcellx Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGS:ACLX Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
21 Mar 24	SellUS$56,440,000	SR One Capital Management, LP	Company	800,000	US$70.55
12 Feb 24	SellUS$2,410,740	Rami Elghandour	Individual	38,065	US$64.46
12 Feb 24	SellUS$640,352	Christopher Heery	Individual	10,111	US$64.46
04 Jan 24	SellUS$1,606,804	Rami Elghandour	Individual	29,073	US$55.27
04 Jan 24	SellUS$470,551	Michelle Gilson	Individual	8,514	US$55.27
04 Jan 24	SellUS$419,926	Christopher Heery	Individual	7,598	US$55.27

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of ACLX?
Owner Type	Number of Shares	Ownership Percentage
Individual Insiders	103,614	0.177%
Hedge Funds	4,800,000	8.22%
Public Companies	6,720,803	11.5%
VC/PE Firms	10,421,258	17.8%
Institutions	36,351,925	62.2%

Dilution of Shares: Shareholders have been diluted in the past year, with total shares outstanding growing by 4.1%.

Top Shareholders

Top 25 shareholders own 95.62% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
12.4%	Gilead Sciences, Inc.	6,720,803	US$531.5m	0%	no data
12%	FMR LLC	6,479,171	US$512.4m	-0.12%	0.03%
8.88%	Paradigm Biocapital Advisors LP	4,800,000	US$379.6m	24.7%	14.15%
7.85%	BlackRock, Inc.	4,246,692	US$335.8m	20.8%	0.01%
7.19%	Perceptive Advisors LLC	3,888,669	US$307.5m	-0.03%	7.22%
6.93%	New Enterprise Associates, Inc.	3,745,262	US$296.2m	0%	14.45%
5.26%	T. Rowe Price Group, Inc.	2,845,249	US$225.0m	1.45%	0.02%
5.15%	RA Capital Management, L.P.	2,787,327	US$220.4m	50.6%	2.76%
4.55%	The Vanguard Group, Inc.	2,462,096	US$194.7m	7.23%	no data
4.34%	SR One Capital Management, LP	2,346,630	US$185.6m	0%	40.51%
3.72%	Janus Henderson Group plc	2,011,950	US$159.1m	5.75%	0.06%
2.86%	State Street Global Advisors, Inc.	1,544,939	US$122.2m	-12%	no data
2.31%	Cormorant Asset Management, LP	1,250,000	US$98.9m	-18%	5.36%
1.8%	Geode Capital Management, LLC	974,967	US$77.1m	4.25%	0.01%
1.65%	Lord, Abbett & Co. LLC	891,848	US$70.5m	2.06%	0.22%
1.35%	Morgan Stanley, Investment Banking and Brokerage Investments	728,801	US$57.6m	41.2%	0.01%
1.28%	Suvretta Capital Management, LLC	689,950	US$54.6m	-54.5%	2.0%
1.25%	Vestal Point Capital, LP	675,000	US$53.4m	0%	4.3%
0.86%	Deutsche Asset & Wealth Management	465,690	US$36.8m	4.29%	0.01%
0.74%	Affinity Asset Advisors, LLC	400,000	US$31.6m	-13%	5.56%
0.71%	Northern Trust Global Investments	384,108	US$30.4m	9.56%	no data
0.65%	Samsara BioCapital LLC	353,641	US$28.0m	-22%	3.62%
0.63%	Baron Capital Group, Inc.	342,832	US$27.1m	0.02%	0.06%
0.63%	UBS Asset Management AG	340,218	US$26.9m	-9.02%	no data
0.61%	Charles Schwab Investment Management, Inc.	328,093	US$25.9m	4.52%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2024/12/30 22:42
End of Day Share Price	2024/12/30 00:00
Earnings	2024/09/30
Annual Earnings	2023/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more here.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on .

Analyst Sources

Arcellx, Inc. is covered by 22 analysts. 17 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Jack Allen	Baird
Peter Lawson	Barclays
Carter Gould	Barclays