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
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
12 May 25	Buy€4,618	Timothy Van Hauwermeiren	Individual	9.64	€479.00
22 Jan 25	Sell€30,102	Timothy Van Hauwermeiren	Individual	48.24	€624.00
02 Jan 25	Sell€609	Timothy Van Hauwermeiren	Individual	4,824	€0.13
10 Dec 24	Sell€28,220	Timothy Van Hauwermeiren	Individual	48.24	€585.00
25 Sep 24	Sell€34,974	Timothy Van Hauwermeiren	Individual	72	€485.75

Insider Trading Volume

Insider Buying: ARGX insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of ARGX?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	2,100	0.00343%
Individual Insiders	19,515	0.0319%
General Public	6,481,853	10.6%
Institutions	54,696,434	89.4%

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

Top Shareholders

Top 25 shareholders own 70.27% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
18.7%	FMR LLC	11,433,168	€7.2b	110%	0.45%
8.19%	T. Rowe Price Group, Inc.	5,012,460	€3.2b	-8.61%	0.31%
6.75%	BlackRock, Inc.	4,130,889	€2.6b	-1.31%	0.05%
4.21%	Janus Henderson Group plc	2,576,281	€1.6b	19.6%	0.72%
4.19%	Artisan Partners Limited Partnership	2,565,069	€1.6b	-14.5%	1.34%
3.49%	Wellington Management Group LLP	2,136,708	€1.3b	0.84%	0.25%
3.19%	Capital Research and Management Company	1,951,082	€1.2b	0.68%	0.06%
3.12%	Norges Bank Investment Management	1,909,157	€1.2b	14.3%	0.1%
2.92%	The Vanguard Group, Inc.	1,789,762	€1.1b	0%	0.02%
1.92%	Avoro Capital Advisors LLC	1,175,000	€741.0m	-4.87%	12.05%
1.41%	Citadel Advisors LLC	865,970	€546.1m	56.9%	0.57%
1.38%	Pictet Asset Management Limited	844,539	€532.6m	-3.67%	0.44%
1.3%	ClearBridge Investments, LLC	794,716	€501.1m	16.3%	0.44%
1.12%	Federated Hermes, Inc.	685,794	€432.5m	-5.7%	0.99%
1.1%	RTW Investments, LP	673,497	€424.7m	0%	6.03%
0.99%	Jennison Associates LLC	607,084	€382.8m	-0.26%	0.25%
0.94%	Bellevue Asset Management AG	572,278	€360.9m	-1.35%	5.68%
0.79%	Franklin Resources, Inc.	482,994	€304.6m	-0.19%	0.11%
0.78%	Geode Capital Management, LLC	477,089	€300.9m	-0.23%	0.02%
0.73%	Polar Capital Holdings Plc	449,229	€283.3m	0%	1.01%
0.7%	Millennium Management LLC	429,844	€271.1m	60%	0.25%
0.64%	UBS Asset Management AG	393,834	€248.4m	-2.48%	0.03%
0.61%	OrbiMed Advisors LLC	373,455	€235.5m	0.35%	4.27%
0.56%	Strategic Advisers LLC	340,861	€214.9m	4.86%	0.07%
0.55%	Eaton Vance Management	336,900	€212.4m	-1%	0.05%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/09/16 03:59
End of Day Share Price	2025/09/16 00:00
Earnings	2025/06/30
Annual Earnings	2024/12/31

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 56 analysts. 29 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
Colleen Kusy	Baird
Joel Beatty	Baird
null null	Baird