Netherlands Biotechnology & Medical Research

argenx SE (ARGX)

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Over the last 90 days, argenx SE has seen three insider transactions, all of which were sales, totaling approximately €4.72 million. The net value of these transactions is negative, indicating more capital outflow than inflow from insiders. The stock has experienced a 21.1% increase in price over the same period.
Ticker: ARGX Exchange: BRU
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for argenx SE. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Truyen L.
Chief Medical Officer
1 sale — total 1,090,845 EUR
Sale 28 May 2026
Value €2,110,402.61 | Price 242.46 | Shares 89,148
Sale 11 May 2026
Value €1,107,184.46 | Price 228.20 | Shares 94,507
Sale 15 Apr 2026
Value €3,501,700.00 | Price 700.34 | Shares 5,000
Sale 22 Jan 2026
Value €3,400,600.00 | Price 700.00 | Shares 4,858
Sale 14 Jan 2026
Value €643,531.75 | Price 695.71 | Shares 925
Sale 13 Jan 2026
Value €1,879,389.00 | Price 696.07 | Shares 2,700
Buy 13 Jan 2026
Value €970,920.00 | Price 359.60 | Shares 2,700
Sale 2 Dec 2025
Value €1,548,000.00 | Price 774.00 | Shares 2,000
Buy 2 Dec 2025
Value €22,740.00 | Price 11.37 | Shares 2,000
Sale 25 Nov 2025
Value €5,986,668.63 | Price 783.70 | Shares 7,639
Through Vissers N. K. M. J. G. , a closely affiliated person
Sale 25 Nov 2025
Value €906,262.84 | Price 783.70 | Shares 1,156
Through van Hauwermeiren F. , a closely affiliated person
Sale 21 Nov 2025
Value €921,642.83 | Price 797.00 | Shares 1,156
Through van Hauwermeiren F. , a closely affiliated person
Sale 21 Nov 2025
Value €6,088,267.06 | Price 797.00 | Shares 7,639
Through Vissers N. K. M. J. G. , a closely affiliated person
Sale 20 Nov 2025
Value €3,767,774.40 | Price 805.08 | Shares 4,680
Buy 20 Nov 2025
Value €66,128.40 | Price 14.13 | Shares 4,680
Sale 19 Nov 2025
Value €3,925,000.00 | Price 785.00 | Shares 5,000
Sale 18 Nov 2025
Value €1,600,000.00 | Price 800.00 | Shares 2,000
Sale 13 Nov 2025
Value €5,866,736.64 | Price 768.00 | Shares 7,639
Through Vissers N. K. M. J. G. , a closely affiliated person
Sale 13 Nov 2025
Value €888,107.52 | Price 768.00 | Shares 1,156
Through van Hauwermeiren F. , a closely affiliated person
Sale 10 Nov 2025
Value €3,460,392.00 | Price 739.40 | Shares 4,680
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-05-30 2026-05-28 S Sale
1.5
Truyen L.

Chief Medical Officer

89,148
242.46
€2,110,403 		89,148 242.46 €2,110,403
2026-05-14 2026-05-11 S Sale
Borgions F.

Chief Technology Innovation Officer

94,507
228.20
€1,107,184 		94,507 228.20 €1,107,184
2026-04-17 2026-04-15 S Sale
2.1
Massey K.

Chief Operating Officer

94,225
262.65
€4,187,090 		94,225 262.65 €4,187,090
2026-01-24 2026-01-22 S Sale
2.6
Moorthy H.

General Counsel

4,858
700.00
€3,400,600 		4,858 700.00 €3,400,600
2026-01-15 2026-01-14 S Sale
3.7
J.M. Daly
Director or Supervisory Board Member
925
695.71
€643,532 		925 695.71 €643,532
2026-01-15 2026-01-13 S Sale
3.7
J.M. Daly
Director or Supervisory Board Member
2,700
696.07
€1,879,389 		2,700 696.07 €1,879,389
2026-01-15 2026-01-13 B Purchase
3.7
J.M. Daly
Director or Supervisory Board Member
2,700
359.60
€970,920 		2,700 359.60 €970,920
2025-12-03 2025-12-02 S Sale
2.6
P.K.M. Verhaeghe
Director or Supervisory Board Member
2,000
774.00
€1,548,000 		2,000 774.00 €1,548,000
2025-12-03 2025-12-02 B Purchase
2.6
P.K.M. Verhaeghe
Director or Supervisory Board Member
2,000
11.37
€22,740 		2,000 11.37 €22,740
2025-11-29 2025-11-25 S Sale
3.5
Van Hauwermeiren T.J.M.

CEO en uitvoerend bestuurder van argenx SE

Through Vissers N. K. M. J. G. , a closely affiliated person
7,639
783.70
€5,986,669 		7,639 783.70 €5,986,669
2025-11-29 2025-11-25 S Sale
3.5
Van Hauwermeiren T.J.M.

CEO en uitvoerend bestuurder van argenx SE

Through van Hauwermeiren F. , a closely affiliated person
1,156
783.70
€906,263 		1,156 783.70 €906,263
2025-11-29 2025-11-21 S Sale
3.5
Van Hauwermeiren T.J.M.

CEO en uitvoerend bestuurder van argenx

Through van Hauwermeiren F. , a closely affiliated person
1,156
797.00
€921,643 		1,156 797.00 €921,643
2025-11-29 2025-11-21 S Sale
3.5
Van Hauwermeiren T.J.M.

CEO en uitvoerend bestuurder van argenx SE

Through Vissers N. K. M. J. G. , a closely affiliated person
7,639
797.00
€6,088,267 		7,639 797.00 €6,088,267
2025-11-22 2025-11-20 S Sale
3.4
A.A. Rosenberg
Director or Supervisory Board Member
4,680
805.08
€3,767,774 		4,680 805.08 €3,767,774
2025-11-22 2025-11-20 B Purchase
3.4
A.A. Rosenberg
Director or Supervisory Board Member
4,680
14.13
€66,128 		4,680 14.13 €66,128
2025-11-26 2025-11-19 S Sale
2.6
Moorthy H.

General Counsel

5,000
785.00
€3,925,000 		5,000 785.00 €3,925,000
2025-11-22 2025-11-18 S Sale
2.1
Massey K.

Chief Operating Officer

2,000
800.00
€1,600,000 		2,000 800.00 €1,600,000
2025-11-19 2025-11-13 S Sale
3.5
Van Hauwermeiren T.J.M.

CEO en uitvoerend bestuurder van argenx SE

Through Vissers N. K. M. J. G. , a closely affiliated person
7,639
768.00
€5,866,737 		7,639 768.00 €5,866,737
2025-11-19 2025-11-13 S Sale
3.5
Van Hauwermeiren T.J.M.

CEO en uitvoerend bestuurder van argenx SE

Through van Hauwermeiren F. , a closely affiliated person
1,156
768.00
€888,108 		1,156 768.00 €888,108
2025-11-10 2025-11-10 S Sale
3.4
A.A. Rosenberg
Director or Supervisory Board Member
4,680
739.40
€3,460,392 		4,680 739.40 €3,460,392
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