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CS

C. Sylvest

Insider activity · 24 months2 buys0 sales

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 · 1 buy · 0 salesJul 25 · 0 buys · 0 salesAug 25 · 0 buys · 0 salesSept 25 · 0 buys · 0 salesOct 25 · 0 buys · 0 salesNov 25 · 0 buys · 0 salesDec 25 · 0 buys · 0 salesJan 26 · 0 buys · 0 salesFeb 26 · 0 buys · 0 salesMar 26 · 0 buys · 0 salesApr 26 · 0 buys · 0 salesMay 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 · 1 buy · 0 sales

Total declarations

14

Company

1

▲ Purchases (4 ops.)

—

▼ Sales (0 ops.)

—

Latest filing published 05 Oct 2026 for argenx SE. Read the official filing

Filing timeline

BuySale

C. Sylvest

Insider track record

Disclosed buys

4

Disclosed sells

0

Signal history

No signal scores available.

Closed purchases

Market purchases

5

Not enough history yet: 0 closed purchases, at least 2 are needed.

Purchases by company

argenx SE 5 purchases · last 05 Oct 2026

C. Sylvest: trading record in brief

All filings by C. Sylvest on record concern argenx SE. In total, 14 filings cover trades dated from 3 October 2022 to 3 October 2026.

No open-market sale appears; the market trades are 4 purchases. The totals do not cover 4 filings with an undisclosed amount. Buying on the open market means paying the going price with one's own funds, a different act from receiving shares as pay.

Most recently, on 5 October 2026, the filings show a transaction in argenx SE. The last purchase on record was published on 30 June 2025, which is 475 days ago. This summary is built from AFM disclosures alone and does not predict where the share price will go.

Companies and markets linked to C. Sylvest

Open company profiles for insider transactions, fundamentals and analyst consensus when available.

Declarations14 total

▲

Director or Supervisory BoardExecutives3 Oct 2026AFM delayargenx SE

66 shares0Restricted Stock UnitAFM:201068

Canonical exit: 1 Jan 2027 (T+90)

●

Director or Supervisory BoardExecutives3 Jul 2026AFM delayargenx SE

-110 shares0Restricted Stock UnitAFM:196563

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Director or Supervisory BoardExecutives3 Jul 2026AFM delayargenx SE

-110 shares0Restricted Stock UnitAFM:196555

●

Director or Supervisory BoardExecutives30 Jun 2026AFM delayargenx SE

-703 shares0Restricted Stock UnitAFM:196329

●

Director or Supervisory BoardExecutives3 Oct 2025AFM delayargenx SE

-225 shares0Restricted Stock UnitAFM:181422

●

Director or Supervisory BoardExecutives3 Jul 2025AFM delayargenx SE

-65 shares0Restricted Stock UnitAFM:176994

▲

Director or Supervisory BoardExecutives30 Jun 2025AFM delayargenx SE

703 shares0Restricted Stock UnitAFM:176783

Canonical exit: 28 Sept 2025 (T+90)

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Director or Supervisory BoardExecutives28 Jun 2025AFM delayargenx SE

-1,065 shares0Restricted Stock UnitAFM:176782

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Director or Supervisory BoardExecutives3 Oct 2024AFM delayargenx SE

-225 shares0Restricted Stock UnitAFM:164141

●

Director or Supervisory BoardExecutives3 Jul 2024AFM delayargenx SE

-66 shares0Restricted Stock UnitAFM:160579

▲

Director or Supervisory BoardExecutives28 Jun 2024AFM delayargenx SE

1,065 shares0Restricted Stock UnitAFM:160459

Canonical exit: 26 Sept 2024 (T+90)

●

Director or Supervisory BoardExecutives3 Oct 2023AFM delayargenx SE

-225 shares0Restricted Stock UnitAFM:152640

▲

Director or Supervisory BoardExecutives3 Jul 2023AFM delayargenx SE

1,200 shares0PersoneelsoptieAFM:144811

Canonical exit: 1 Oct 2023 (T+90)

▲

Director or Supervisory BoardExecutives3 Oct 2022AFM delayargenx SE

4,050 shares0PersoneelsoptieAFM:135453

Canonical exit: 1 Jan 2023 (T+90)

14 of 14 declarations