argenx SE
At a glance
Most recent filing on November 6, 2026 — an option exercise by Ulrichts P. on Nov 5, 2026.
Over the past 12 months: 0 open-market purchases and 52 open-market sales.
We hold 972 visible filings, going back to July 11, 2014.
Insider trades
What is a MAR filing?5 of 972 shown
Some of these filings come from the AFM register of board members and supervisory directors (art. 5:48 Wft). The AFM board-member register gives no transaction type; we derive it from the number of shares and the price.
- Ulrichts P. Chief scientific officer13 sharesOption exercise
- Ulrichts P. Chief scientific officer€4,675Option exercise
- Ulrichts P. Chief scientific officer€10,725Open-market sale
- Ulrichts P. Chief scientific officer921 sharesOption exercise
- Ulrichts P. Chief scientific officer€331,192Option exercise
Short positions
All short positionsNet short positions of 0.5% or more in argenx SE that are open today, as the regulator publishes them. Together they come to 0.66% of the shares. Positions below 0.5% are not published, so the real total can be higher.
1 open position, together 0.66%. The holders and their history are part of the subscription.
Source: Autoriteit Financiële Markten (AFM), register of net short positions, as published on November 9, 2026.
In the United States
argenx SE is also listed in the United States (Nasdaq: ARGX) and files with the SEC under CIK 0001697862. What the U.S. registers hold for it is below.
Free to read, up to a point. The trades members of Congress reported in this company and the funds that reported holding it in their 13F filings are part of the subscription. What that costs is on the pricing page. Already subscribed? Sign in and this page opens in full.
The insider score is a rank of the most recent scored buy, not a forecast. How it is calculated is in the methodology. Source: the Dutch AFM register (MAR art. 19). The section In the United States carries no score, by design: everything in it is a fact from a public U.S. register — insider filings at the SEC (Form 4), lobbying filings, trades reported by members of Congress, Donald Trump’s trades and fund holdings in 13F filings. Our scores, percentiles and signals run on the Dutch register only.