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Companies
▲ Purchases (0 ops.)
▼ Sales (4 ops.)
Latest filing published 30 Jul 2026 for Prothena CORP Public Ltd Co. Read the official filing
Insider track record
Disclosed buys
0
Disclosed sells
4
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
Karin L. Walker: trading record in brief
Karin L. Walker is a declared insider at 2 companies (senior executive); the most frequent names are Prothena CORP Public Ltd Co and Bio Green Med Solution, Inc. In total, 28 filings cover trades dated from 13 January 2016 to 28 July 2026.
Sales make up the whole of the open-market record (4 sales). The amount is not disclosed for 4 filings. Other entries cover 4 share grants and 19 option exercises.
Most recently, on 30 July 2026, the filings show an option exercise in Prothena CORP Public Ltd Co. Filings reach the SEC (Form 4) feed a median of 2 days after the trade. Section 16 rules allow two business days to file each Form 4. A sale on its own says little: insiders also sell to pay tax, fund a purchase or diversify. These figures are compiled from regulatory filings published by SEC (Form 4). They describe what insiders did and are not a recommendation.
Companies and markets linked to Karin L. Walker
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations28 total
15,000 sharesOrdinary Shares, par value $0.01 per shareSEC:0000905148-26-003416:0
15,000 shares@ US$8.560.029% mcap6.0% of flowOrdinary Shares, par value $0.01 per shareSEC:0000905148-26-003416:1
25,000 shares0Ordinary Shares, par value $0.01 per shareSEC:0000905148-25-002661:0
5,000 shares@ US$13.533.0% of flowOrdinary Shares, par value $0.01 per shareSEC:0000905148-24-000282:0
5,000 shares@ US$13.532.9% of flowOrdinary Shares, par value $0.01 per shareSEC:0000905148-23-001682:0
5,000 shares@ US$13.532.9% of flowOrdinary Shares, par value $0.01 per shareSEC:0000905148-23-001531:0
5,000 shares@ US$13.533.0% of flowOrdinary Shares, par value $0.01 per shareSEC:0000905148-23-001201:0
5,000 shares@ US$15.043.7% of flowOrdinary Shares, par value $0.01 per shareSEC:0000905148-23-000946:0
5,000 shares@ US$15.043.3% of flowOrdinary Shares, par value $0.01 per shareSEC:0000905148-23-000772:0
5,000 shares@ US$15.043.2% of flowOrdinary Shares, par value $0.01 per shareSEC:0001140361-23-035280:0
21,219 shares0Common StockSEC:0001104659-23-077655:0
5,000 shares@ US$15.043.3% of flowOrdinary Shares, par value $0.01 per shareSEC:0001140361-23-030563:0
5,000 shares@ US$15.043.3% of flowOrdinary Shares, par value $0.01 per shareSEC:0001140361-23-025833:0
5,000 shares@ US$15.043.3% of flowOrdinary Shares, par value $0.01 per shareSEC:0001140361-23-019684:0
5,000 shares@ US$15.043.4% of flowOrdinary Shares, par value $0.01 per shareSEC:0001140361-23-013190:0
20,000 shares@ US$15.0413.3% of flowOrdinary Shares, par value $0.01 per shareSEC:0001567619-23-005293:0
10,000 shares@ US$15.046.9% of flowOrdinary Shares, par value $0.01 per shareSEC:0001567619-22-020647:0
20,000 shares@ US$15.0414.5% of flowOrdinary Shares, par value $0.01 per shareSEC:0001567619-22-018818:0
15,822 shares0Common StockSEC:0001104659-22-071903:0
4,519 shares@ US$15.043.4% of flowOrdinary Shares, par value $0.01 per shareSEC:0001567619-21-021197:0
20,000 shares@ US$15.0414.5% of flowOrdinary Shares, par value $0.01 per shareSEC:0001567619-21-018621:0
2,374 shares0Common StockSEC:0001104659-21-082598:0
2,000 sharesOrdinary Shares, par value $0.01 per shareSEC:0000899243-16-011804:0
500 sharesOrdinary Shares, par value $0.01 per shareSEC:0000899243-16-011804:2
2,000 sharesOrdinary Shares, par value $0.01 per shareSEC:0000899243-16-011804:3
25 of 28 declarations
