Karen Massey

Track

Insider profile

Performance

Overall performance
2.1
Performance over holding periods
2.1
30 days 90 days 120 days
Average return -1% 8.2% 15.1%
Success rate 46% 68% 82%
Transactions
4 0% Buy
34 71% Buy
47 69% Buy
Ranking by holding-period performance
Karen Massey's trades of argenx SE's stock


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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date Company B/S Transaction type Nb. shares
Price
Value 		Number of shares Price Value Details
2026-04-17 2026-04-15
NL argenx SE (ARGX)
S Sale
94,225
262.65
€4,187,090 		94,225 262.65 €4,187,090
2025-11-22 2025-11-18
NL argenx SE (ARGX)
S Sale
99,281
139.53
€3,361,916 		99,281 139.53 €3,361,916
2025-10-23 2025-10-15
NL argenx SE (ARGX)
S Sale
14,526
49.00
€3,192,046 		14,526 49.00 €3,192,046
2025-08-08 2025-07-31
NL argenx SE (ARGX)
S Sale
8,000
585.40
€4,683,200 		8,000 585.40 €4,683,200