Skip to content
sellWeak10b5-1 plan

Karin L Walker sold $170k of PRTA

Chief Accounting Officer at PROTHENA CORP PUBLIC LTD CO. 5,000 shares at an average of $34.00, traded Nov 30, 2023, filed Nov 30, 2023.

Warning score
11
Value
$170k
5,000 shares
Holdings after
0
-100% from before
From 52-week low
+1%
low $32.31, close $32.58
From 52-week high
-59%
high $78.59, as of Nov 30, 2023

Score components

  • Role
    Officer
    +15
  • Trade size
    $170k at market
    +11
  • Share of holdings sold
    Sold 100% of holdings
    +20
  • Cluster
    No other insider selling within 14 days
    0
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

PRTAOct 9, 2026 · close 8.84
Since filing Nov 30, 2023: -72.9%SPY +76.8% · excess -149.6%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0000905148-23-001531, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Nov 30, 2023MOption exercise
Ordinary Shares, par value $0.01 per share10b5-1
+5,000$13.53$68k5,000Nov 30, 2023
Nov 30, 2023SOpen-market sale
Ordinary Shares, par value $0.01 per share10b5-1
-5,000$34.00$170k0Nov 30, 2023
Nov 30, 2023MOption exercise
Stock Option (Right to Buy)derivative10b5-1
-5,000$0.00$025,000Nov 30, 2023

Related signals

Other insiders at PROTHENA CORP PUBLIC LTD CO and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
61Notable
PRTAbuy
PROTHENA CORP PUBLIC LTD CO
William P Scully
owner
$1.8M
215,000 shares
+68%
55Moderate
PRTAbuy
PROTHENA CORP PUBLIC LTD CO
William P Scully
owner
$857k
100,000 shares
+47%
51Moderate
PRTAbuy
PROTHENA CORP PUBLIC LTD CO
William P Scully
owner
$1.4M
162,000 shares
+312%
49Moderate
PRTAbuy
PROTHENA CORP PUBLIC LTD CO
William P Scully
owner
$890k
103,500 shares
+124%
52Moderate
PRTAbuy
PROTHENA CORP PUBLIC LTD CO
William P Scully
owner
$843k
100,000 shares
+12%
29Weak
PRTAbuy
PROTHENA CORP PUBLIC LTD CO
William P Scully
owner
$256k
27,000 shares
+3%
36Weak
PRTAbuy
PROTHENA CORP PUBLIC LTD CO
William P Scully
owner
$439k
50,000 shares
+7%
30Weak
PRTAbuy
PROTHENA CORP PUBLIC LTD CO
William P Scully
owner
$323k
37,500 shares
+5%
16Weak
PRTAsell 210b5-1
PROTHENA CORP PUBLIC LTD CO
Michael John Isaacs
General Counsel & Company Sec.
$71k
8,386 shares
-19%
16Weak
PRTAsell 210b5-1
PROTHENA CORP PUBLIC LTD CO
Anne Evans Kingston
Chief Strategy Officer
$65k
7,662 shares
-12%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Karin L Walker sold $170k of PRTA | InsiderTell