argenx Ownership

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

Recent Insider Transactions

ENXTBR:ARGX Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
27 Feb 26	Sell€70,662	Ana Cespedes	Individual	107	€660.39
26 Feb 26	Sell€1,267,490	Anthony Rosenberg	Individual	1,750	€724.28
14 Jan 26	Sell€643,532	James Daly	Individual	925	€695.71
25 Nov 25	Sell€37,806	Timothy Van Hauwermeiren	Individual	48.24	€783.70
21 Nov 25	Sell€38,447	Timothy Van Hauwermeiren	Individual	48.24	€797.00
13 Nov 25	Sell€37,048	Timothy Van Hauwermeiren	Individual	48.24	€768.00
03 Sep 25	Sell€6,090,000	Timothy Van Hauwermeiren	Individual	10,000	€609.00
02 Sep 25	Sell€371,245	Brian Kotzin	Individual	608	€610.60
13 Aug 25	Sell€233,410	Ana Cespedes	Individual	426	€547.91

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 ARGX?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	3,645	0.00586%
Individual Insiders	100,184	0.161%
General Public	13,199,549	21.2%
Institutions	48,884,393	78.6%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 57.18% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
7.98%	FMR LLC	4,961,739	€3.6b	-11.3%	0.18%
7.49%	BlackRock, Inc.	4,658,273	€3.3b	1.59%	0.05%
5.29%	Artisan Partners Limited Partnership	3,287,306	€2.4b	-8.08%	1.83%
4.97%	T. Rowe Price Group, Inc.	3,092,832	€2.2b	-8.88%	0.2%
4.2%	Wellington Management Group LLP	2,609,512	€1.9b	15.6%	0.33%
4.1%	Janus Henderson Group plc	2,552,614	€1.8b	3.38%	0.71%
3.63%	Capital Research and Management Company	2,256,216	€1.6b	17.7%	0.07%
3%	Vanguard Capital Management, LLC	1,863,608	€1.3b	0.29%	0.03%
2.91%	Norges Bank Investment Management	1,809,315	€1.3b	-2.07%	0.08%
1.61%	Avoro Capital Advisors LLC	1,000,000	€715.6m	1.01%	9.33%
1.34%	Amundi Asset Management SAS	830,961	€594.6m	0.02%	0.1%
1.14%	RTW Investments, LP	709,446	€507.7m	5.34%	5.68%
0.93%	Invesco Ltd.	580,208	€415.2m	0%	0.11%
0.88%	Vanguard Fiduciary Trust Company	547,433	€391.7m	0.47%	0.06%
0.83%	Geode Capital Management, LLC	513,856	€367.7m	0.6%	0.02%
0.81%	Deutsche Asset & Wealth Management	501,033	€358.5m	0.94%	0.08%
0.8%	UBS Asset Management AG	494,639	€354.0m	1.58%	0.02%
0.73%	AllianceBernstein L.P.	451,652	€323.2m	-0.05%	0.1%
0.71%	Franklin Resources, Inc.	443,863	€317.6m	0.01%	0.1%
0.68%	Jennison Associates LLC	423,769	€303.2m	-16.4%	0.19%
0.65%	Eaton Vance Management	404,415	€289.4m	-4.76%	0.06%
0.64%	Federated Hermes, Inc.	398,256	€285.0m	-32.1%	0.51%
0.64%	Teachers Insurance and Annuity Association-College Retirement Equities Fund	397,275	€284.3m	0%	0.07%
0.62%	Polar Capital Holdings Plc	385,058	€275.5m	0%	0.68%
0.62%	JP Morgan Asset Management	384,991	€275.5m	0.42%	0.03%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/06/01 11:43
End of Day Share Price	2026/05/29 00:00
Earnings	2026/03/31
Annual Earnings	2025/12/31

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.

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 Github.

Analyst Sources

argenx SE is covered by 55 analysts. 31 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
null null	Baird
Colleen Kusy	Baird
Joel Beatty	Baird