Company Insider Tape

Prothena Corporation plc insider transactions

Executive and director filing history, acquisition and disposal balance, executive concentration, cadence, and stored market context.

Symbol PRTA Latest filing 16 Jun 2026

Company Read

Net acquisition

PRTA has 12 stored insider filings. Acquisitions account for 91.7% of classified filings and disposals account for 8.3%. The largest stored filing is $1.0M from SCULLY, WILLIAM P.

Latest filing 16 Jun 2026most recent stored row
Largest filing $1.0Mreported transaction value
Total filings 12stored transaction rows
Acquisition value $3.1M11 acquisitions
Disposal value $01 disposals
Net value $3.1Macquisitions minus disposals

Filing cadence

Last 12 active months
May 2026 7
Jun 2026 5

Acquisitions 91.7% · Disposals 8.3%

May 2026 $981.3K
Jun 2026 $2.1M

Executive concentration

By filing count
SCULLY, WILLIAM P 10% Owner · 6 filings
COOKE, SHANE Director · 1 filings
DUNN, WILLIAM H. JR. Director · 1 filings
COLLIER, RICHARD T Director · 1 filings
SELKOE, DENNIS J. Director · 1 filings
WELCH, DANIEL G Director · 1 filings
EKMAN, LARS Director · 1 filings

Market Context

PRTA weekly market snapshot

Week 31 Jul 2026
Latest close 8.12 USDstored weekly close
1-week move -7.2%latest weekly bar
13-week move -16.2%medium-term context
Relative Strength -21.6Sharemaestro indicator
Fair value gap -56.1%price vs fair value
Trend signal 0smoothed trend state

Transaction History

Latest insider filings for PRTA

Showing 1-12 of 12
Date 16 Jun 2026
Insider SCULLY, WILLIAM P10% Owner
Side Acquisition
Shares 20000
Price 7.90
Value 157990
Security Ordinary Shares, par value $0.01 per share
Date 15 Jun 2026
Insider SCULLY, WILLIAM P10% Owner
Side Disposal
Shares 325000
Price 0.00
Value 0
Security Ordinary Shares, par value $0.01 per share
Date 11 Jun 2026
Insider SCULLY, WILLIAM P10% Owner
Side Acquisition
Shares 125000
Price 8.17
Value 1021225
Security Ordinary Shares, par value $0.01 per share
Date 4 Jun 2026
Insider SCULLY, WILLIAM P10% Owner
Side Acquisition
Shares 50000
Price 9.31
Value 465295
Security Ordinary Shares, par value $0.01 per share
Date 2 Jun 2026
Insider SCULLY, WILLIAM P10% Owner
Side Acquisition
Shares 50000
Price 9.43
Value 471300
Security Ordinary Shares, par value $0.01 per share
Date 22 May 2026
Insider SCULLY, WILLIAM P10% Owner
Side Acquisition
Shares 100000
Price 9.81
Value 981300
Security Ordinary Shares, par value $0.01 per share
Date 15 May 2026
Insider COLLIER, RICHARD TDirector
Side Acquisition
Shares 27000
Price 0.00
Value 0
Security Stock Option (Right to Buy)
Date 15 May 2026
Insider COOKE, SHANEDirector
Side Acquisition
Shares 27000
Price 0.00
Value 0
Security Stock Option (Right to Buy)
Date 15 May 2026
Insider DUNN, WILLIAM H. JR.Director
Side Acquisition
Shares 27000
Price 0.00
Value 0
Security Stock Option (Right to Buy)
Date 15 May 2026
Insider EKMAN, LARSDirector
Side Acquisition
Shares 27000
Price 0.00
Value 0
Security Stock Option (Right to Buy)
Date 15 May 2026
Insider SELKOE, DENNIS J.Director
Side Acquisition
Shares 27000
Price 0.00
Value 0
Security Stock Option (Right to Buy)
Date 15 May 2026
Insider WELCH, DANIEL GDirector
Side Acquisition
Shares 27000
Price 0.00
Value 0
Security Stock Option (Right to Buy)