PRTA

PROTHENA CORP PUBLIC LTD CO

Latest Form 4:Purchase$439KbySCULLY WILLIAM P (10% Owner) · filed Aug 21, 2026

PROTHENA CORP PUBLIC LTD CO (PRTA) has 18 SEC Form 4 filings (29 transaction rows) in the rolling window, disclosed by 3 distinct insiders. Most recent filing: Aug 21, 2026.

The most active filer is 10% Owner SCULLY WILLIAM P with 7 filings. Insiders have net bought $3.7M over the trailing 6 months. The largest single insider purchase in this window was $1.0M by 10% Owner SCULLY WILLIAM P on Jun 11, 2026.

  • Industry:Biotechnology
  • CEO:Gene G. Kinney
  • Employees:67
  • HQ:Dublin, DU, IE
  • IPO:2012-12-20

Insider Buying

$3.9M

reported purchases (SEC code P)

Insider Selling

$136K

reported sales (SEC code S)

Unique Insiders

3

in the rolling window

Market Cap

$480.0M

latest known value

Source
Purchase$439KAug 21SEC ↗
Purchase$323KAug 10SEC ↗
Sale$65KJul 31SEC ↗
Sale$71KJul 31SEC ↗
Purchase$158KJun 18SEC ↗
Purchase$1.0MJun 12SEC ↗
Purchase$465KJun 5SEC ↗
Purchase$471KJun 3SEC ↗
SCULLY WILLIAM PFirst filing
Purchase$981KMay 26SEC ↗

Related companies

PROTHENA CORP PUBLIC LTD CO is in the Healthcare sector.