Name: PRTA Insider Trading Activity
Creator: Tracefour
License: https://www.usa.gov/government-works
Keywords: PRTA, insider trading, SEC Form 4, insider transactions

Question 1

How many SEC Form 4 insider filings does PRTA have?

Accepted Answer

PROTHENA CORP PUBLIC LTD CO (PRTA) has 6 SEC Form 4 filings (6 transaction rows) in the rolling 365-day window, disclosed by 1 distinct insider. Most recent filing: Jun 18, 2026.

Question 2

When was the most recent SEC Form 4 filing for PRTA?

Accepted Answer

The most recent Form 4 filing for PRTA on Tracefour is dated Jun 18, 2026.

Question 3

Who is the most active insider at PRTA?

Accepted Answer

The most active SEC Form 4 filer at PRTA in the rolling window is 10% Owner SCULLY WILLIAM P, with 5 filings.

Question 4

What is the net insider flow at PRTA over the last 6 months?

Accepted Answer

Over the trailing 180 days, insiders at PRTA have net bought $3.1M based on SEC Form 4 disclosures.

Question 5

What was the largest insider purchase at PRTA?

Accepted Answer

The largest single insider open-market purchase at PRTA in the rolling window was $1.0M by 10% Owner SCULLY WILLIAM P on 2026-06-11.

Question 6

What is the total insider buy and sell value at PRTA in the current window?

Accepted Answer

Inside the rolling window, insiders at PRTA bought $3.1M and sold $0 based on SEC Form 4 filings.

						Source
SCULLY WILLIAM P	10% Owner	Purchase	20,000	$158K	Jun 18	SEC ↗
SCULLY WILLIAM P	10% Owner	Purchase	125,000	$1.0M	Jun 12	SEC ↗
SCULLY WILLIAM P	10% Owner	Purchase	50,000	$465K	Jun 5	SEC ↗
SCULLY WILLIAM P	10% Owner	Purchase	50,000	$471K	Jun 3	SEC ↗
SCULLY WILLIAM PFirst filing	10% Owner	Purchase	100,000	$981K	May 26	SEC ↗

PRTA

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