Argenx SE
ARGX- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001697862
No open-market purchases or sales by Argenx SE insiders were filed in the last 90 days; 510 institutions reported holding it in 13F filings for Q2 2026, worth $26.1B in total; no superinvestor holds it.
Holders of 5% or more of ARGX
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Argenx SE, largest stake first. The change is against the holder's previous filing.
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
22 Schedule 13D and 13G filings on Argenx SE, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Aug 14, 202610:38 AM ET | Price T Rowe Associates Inc | 13G/A | 4.30%2.68M shares | −1.70 ppfrom 6.00%Below 5% | Jun 30, 2026 | SEC |
| May 6, 202611:00 AM ET | FMR LLCand 1 other | 13G/A | 8.70%5.41M shares | −1.30 ppfrom 10.00% | Mar 31, 2026 | SEC |
| Nov 14, 202512:19 PM ET | Price T Rowe Associates Inc | 13G/A | 6.00%3.65M shares | −2.20 ppfrom 8.20% | Sep 30, 2025 | SEC |
| Aug 14, 20251:07 PM ET | Price T Rowe Associates Inc | 13G/A | 8.20%4.98M shares | – | Jun 30, 2025 | SEC |
| Aug 12, 20256:14 AM ET | Artisan Partners Limited Partnershipand 3 others | 13G/A | 3.80%2.35M shares | –Below 5% | Jun 30, 2025 | SEC |
| Feb 12, 20259:16 AM ET | FMR LLCand 1 other | 13G/A | 10.00%6.02M shares | – | Dec 31, 2024 | SEC |
| Feb 14, 2024 | Price T Rowe Associates Inc | 13G/AOld format | – | – | – | SEC |
| Feb 12, 2024 | Artisan Partners Limited Partnership | 13GOld format | – | – | – | SEC |
| Feb 9, 2024 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 1, 20241:04 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 14, 2023 | Price T Rowe Associates Inc | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2023 | Artisan Partners Limited Partnership | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 1, 20234:54 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Mar 11, 20222:13 PM ET | BlackRock Inc. | 13GOld format | – | – | – | SEC |
| Feb 14, 2022 | Price T Rowe Associates Inc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2022 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 8, 20225:05 PM ET | BlackRock Inc. | 13GOld format | – | New | – | SEC |
| Feb 4, 2022 | Artisan Partners Limited Partnership | 13GOld format | – | New | – | SEC |
| Feb 16, 2021 | Price T Rowe Associates Inc | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 8, 2021 | FMR LLC | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Argenx SE shares.
No Form 144 notices for Argenx SE are on file.