Massey K.

Executive

Insider activity · 24 months0 buys3 salesCumulative net flow

Nov 24 · 0 buys · 0 salesDec 24 · 0 buys · 0 salesJan 25 · 0 buys · 0 salesFeb 25 · 0 buys · 0 salesMar 25 · 0 buys · 0 salesApr 25 · 0 buys · 0 salesMay 25 · 0 buys · 0 salesJun 25 · 0 buys · 0 salesJul 25 · 0 buys · 0 salesAug 25 · 0 buys · 0 salesSept 25 · 0 buys · 0 salesOct 25 · 0 buys · 1 saleNov 25 · 0 buys · 1 saleDec 25 · 0 buys · 0 salesJan 26 · 0 buys · 0 salesFeb 26 · 0 buys · 0 salesMar 26 · 0 buys · 0 salesApr 26 · 0 buys · 1 saleMay 26 · 0 buys · 0 salesJun 26 · 0 buys · 0 salesJul 26 · 0 buys · 0 salesAug 26 · 0 buys · 0 salesSept 26 · 0 buys · 0 salesOct 26 · 0 buys · 0 sales

Total declarations

Company

▲ Purchases (0 ops.)

—

▼ Sales (3 ops.)

€6.5M

Latest filing: trade of 14 Apr 2026 for argenx SE, €3.5M. The register gives no publication date. Read the official filing

Filing timeline

BuySale

Massey K.

Insider track record

Disclosed buys

Disclosed sells

Signal history

Massey K.: trading record in brief

Massey K. discloses dealings in argenx SE to AFM. Between 15 October 2025 and 14 April 2026, the trades on record add up to 3 filings.

Sales make up the whole of the open-market record (3 sales, €6.5M). So far in 2026, the count stands at no purchases and 1 sale.

Most recently, on 17 April 2026, the filings show an open-market sale worth €3.5M in argenx SE. A sale on its own says little: insiders also sell to pay tax, fund a purchase or diversify. Every figure here comes from the filings published by AFM and describes the past, not future prices; it is not investment advice.