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CLOSED · 15:30 ET
Market ClerkRecap
Sun Sep 6 · markets closed2 signals today321 insider buys this week · $404MCIRO short report next: Sep 15The week ahead

PRTA

PROTHENA CORP PUBLIC LTD CO
NASDAQ · HEALTH CARE · PHARMACEUTICAL PREPARATIONS
9.82
+0.22 +2.29%
USD · Sep 6, 01:17 a.m. ET
WatchTime Machine
Work order
58
WATCH · insiders 77, shorts 39
Insiders, 90 days
+$695K
net buying · 2 buys, 0 sells
Congress, 90 days
0 / 0
no disclosures naming it
Big money
0 / 15
none of the tracked funds disclose it
Calls on record
0
nobody we score has called it yet
MKT CAP $504.1MP/E —DIV YIELD —FCF YIELD —REV TTM $54.5M +427.3%NET INCOME −$44MNET CASH —52W 7.91 – 11.51NEXT EARNINGS Nov 5 EST.SEC XBRL · TTM TO Invalid Date

One year, everything drawn on

251 SESSIONS · DAILY CLOSES
12109.017.62Sep 2 · 10% owner buy $256KAug 20 · 10% owner buy $439KAug 6 · 10-Q filed (Q2 2026)Aug 6 · 10-Q filed (Q1 2026)Feb 27 · 10-K filed (FY 2025)Feb 27 · 10-K filed (Q4 2025)Nov 6 · 10-Q filed (Q3 2025)Aug 6 · 10-Q filed (Q2 2025)Aug 6 · 10-Q filed (Q1 2025)Feb 27 · 10-K filed (FY 2024)Feb 27 · 10-K filed (Q4 2024)Nov 6 · 10-Q filed (Q3 2024)Nov 6 · 10-Q filed (Q2 2024)Nov 6 · 10-Q filed (Q1 2024)Feb 27 · 10-K filed (FY 2023)Feb 27 · 10-K filed (Q4 2023)SEP 2025OCTJAN 2026APRJUL
Insider buyInsider sellCongress buy, above the lineCongress sell, below10-K / 10-Q filedHOVER A MARKER FOR THE FILING
THE WORK ORDER · 2026-09-06
Insiders (90d): $695K net buying · 1 distinct buyer
Shorts (latest report): 8.5M short · +373K last period
Every line of the math
58WATCH

Congress is trading it

No STOCK Act disclosure names PRTA.

Insider activity

ALL 2
DateInsiderTypeValue
Sep 210% ownerBuy$256K
Aug 2010% ownerBuy$439K
Watch PRTA. Know when insiders buy.
One email the day a filing lands. Free.