Insider filing · PRTA
Prothena Corporation plc
PRTA · Healthcare · 11 filings in 24 months
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EcoR1 Capital, LLC sold $50.8M of Prothena (PRTA)
Executed May 2 2025, disclosed May 6 2025, 4 days later.
Value, as filed
$50.8M
6,279,684 sh across 3 lots
Executed
May 2 2025
the trade date, as filed
Disclosed
May 6 2025
4 days after the trade
Return, 21 sessionsiFrom the disclosed entry session; derived
–
purchases only
Returns are measured on stock purchases only.
The filer
EL
EcoR1 Capital, LLC
Director
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EcoR1 Capital, LLC (Director) filed 2 Form 4 reports as a reporting entity in the trailing twelve months (2 purchases, 0 sales), most often in ZYME. Across 2 priced purchase filings, the average 21-session return was +2.8% from execution and -5.0% from disclosure (delay-adjusted; derived). The largest single filing was $40.0M of AKTS (2,222,222 sh across 2 lots, as filed), executed Jan 12.
The name
PRTAHealthcare · Prothena Corporation plc, a late-stage clinical biotechnology company, focuses on discovery and development of novel therapies to treat dis…
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