Karin L Walker Prothena Corp Public LTD CO (PRTA) insider trading activity

PRTA Quotes by TradingView

Karin L Walker is Chief Accounting Officer of PROTHENA CORP PUBLIC LTD CO. Currently has a direct ownership of 25,000 shares of PRTA, which is worth approximately $188,500. The most recent transaction as insider was on Jul 28, 2025, when has been sold 25,000 shares (Ordinary Shares, par value $0.01 per share) at a price of $0.0 per share, resulting in proceeds of $0. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 25K
Infinity% 3M change
Infinity% 12M change
Total Value Held $188,500

Karin L Walker Transaction History

Date Transaction Value Shares Traded Shares Held Form
Jul 28 2025
BUY
Grant, award, or other acquisition
-
25,000 Added 50.0%
25,000 Ordinary Shares, par v...
Jan 24 2024
SELL
Open market or private sale
$170,000 $34.0 p/Share
5,000 Reduced 100.0%
0 Ordinary Shares, par v...
Jan 24 2024
BUY
Exercise of conversion of derivative security
$67,650 $13.53 p/Share
5,000 Added 50.0%
5,000 Ordinary Shares, par v...
Dec 20 2023
SELL
Open market or private sale
$185,350 $37.07 p/Share
5,000 Reduced 100.0%
0 Ordinary Shares, par v...
Dec 20 2023
BUY
Exercise of conversion of derivative security
$67,650 $13.53 p/Share
5,000 Added 50.0%
5,000 Ordinary Shares, par v...
Nov 30 2023
SELL
Open market or private sale
$170,000 $34.0 p/Share
5,000 Reduced 100.0%
0 Ordinary Shares, par v...
Nov 30 2023
BUY
Exercise of conversion of derivative security
$67,650 $13.53 p/Share
5,000 Added 50.0%
5,000 Ordinary Shares, par v...
Oct 25 2023
SELL
Open market or private sale
$206,550 $41.31 p/Share
5,000 Reduced 100.0%
0 Ordinary Shares, par v...
Oct 25 2023
BUY
Exercise of conversion of derivative security
$67,650 $13.53 p/Share
5,000 Added 50.0%
5,000 Ordinary Shares, par v...
Sep 19 2023
SELL
Open market or private sale
$261,800 $52.36 p/Share
5,000 Reduced 100.0%
0 Ordinary Shares, par v...
Sep 19 2023
BUY
Exercise of conversion of derivative security
$75,200 $15.04 p/Share
5,000 Added 50.0%
5,000 Ordinary Shares, par v...
Aug 18 2023
SELL
Open market or private sale
$285,900 $57.18 p/Share
5,000 Reduced 100.0%
0 Ordinary Shares, par v...
Aug 18 2023
BUY
Exercise of conversion of derivative security
$75,200 $15.04 p/Share
5,000 Added 50.0%
5,000 Ordinary Shares, par v...
Jul 19 2023
SELL
Open market or private sale
$347,600 $69.52 p/Share
5,000 Reduced 100.0%
0 Ordinary Shares, par v...
Jul 19 2023
BUY
Exercise of conversion of derivative security
$75,200 $15.04 p/Share
5,000 Added 50.0%
5,000 Ordinary Shares, par v...
Jun 20 2023
SELL
Open market or private sale
$345,600 $69.12 p/Share
5,000 Reduced 100.0%
0 Ordinary Shares, par v...
Jun 20 2023
BUY
Exercise of conversion of derivative security
$75,200 $15.04 p/Share
5,000 Added 50.0%
5,000 Ordinary Shares, par v...
May 19 2023
SELL
Open market or private sale
$370,250 $74.05 p/Share
5,000 Reduced 100.0%
0 Ordinary Shares, par v...
May 19 2023
BUY
Exercise of conversion of derivative security
$75,200 $15.04 p/Share
5,000 Added 50.0%
5,000 Ordinary Shares, par v...
Apr 19 2023
SELL
Open market or private sale
$264,750 $52.95 p/Share
5,000 Reduced 100.0%
0 Ordinary Shares, par v...
Apr 19 2023
BUY
Exercise of conversion of derivative security
$75,200 $15.04 p/Share
5,000 Added 50.0%
5,000 Ordinary Shares, par v...
Mar 20 2023
SELL
Open market or private sale
$239,950 $47.99 p/Share
5,000 Reduced 100.0%
0 Ordinary Shares, par v...
Mar 20 2023
BUY
Exercise of conversion of derivative security
$75,200 $15.04 p/Share
5,000 Added 50.0%
5,000 Ordinary Shares, par v...
Mar 15 2023
SELL
Open market or private sale
$968,000 $48.4 p/Share
20,000 Reduced 100.0%
0 Ordinary Shares, par v...
Mar 15 2023
BUY
Exercise of conversion of derivative security
$300,800 $15.04 p/Share
20,000 Added 50.0%
20,000 Ordinary Shares, par v...

Also insider at

CYCC
Cyclacel Pharmaceuticals, Inc. Healthcare
Director
KLW

Karin L Walker

Chief Accounting Officer
South San Francisco, CA

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