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PRTA

QT67Prothena Corporation plc
NASDAQ·Healthcare·Biotechnology·USA
Latest market price
8.93
+0.44+5.18%
OverviewShort InterestFilings
PRTAQT67Prothena Corporation plc·NASDAQ
OverviewShort InterestFilings
8.93+5.18%
TA
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VRTX-1.60%$451.63REGN+0.33%$609.94ARGX-1.63%$877.72ALNY-1.64%$278.09RVMD+3.31%$162.99MRNA+3.50%$63.96UTHR-2.70%$536.59BNTX-1.44%$90.89
Snapshot
Index-P/E-EPS (ttm)
-5.22
Insider Own-
Shs Outstand-
Perf Week8.11%
Market Cap444.48MForward P/E-EPS next Y-1.03Insider Trans-Shs Float-Perf Month-1.54%
Enterprise Value122.67MPEG0.01EPS next Q-Inst Own-Short Float-Perf Quarter4.57%
Income-147344783.00P/S7.67EPS this Y100.89%Inst Trans-Short Ratio-Perf Half Y-8.41%
Sales57.94MP/B1.46EPS next Y-2307.13%ROA-43.21%Short Interest-Perf YTD-6.49%
Book/sh-P/C-EPS next 5Y165.25%ROE-49.88%52W High11.80 -24.32%Perf Year56.67%
Cash/sh-P/FCF-EPS past 3/5Y-ROIC-39.43%52W Low5.64 58.33%Perf 3Y-
Dividend Est.-EV/EBITDA-1.64Sales past 3/5Y-43.00% 58.49%Gross Margin46.84%Volatility4.70% 3.88%Perf 5Y-
Dividend TTM-EV/Sales2.12EPS Y/Y TTM-Oper. Margin-217.94%ATR (14)0.54Perf 10Y-
Dividend Ex-Date-Quick Ratio10.43Sales Y/Y TTM-91.85%Profit Margin-260.92%RSI (14)47.66Recom2.00
Dividend Gr. 3/5Y-Current Ratio10.43EPS Q/Q-SMA20-1.07%Beta1.39Target Price19.00
Payout0.00%Debt/Eq0.02Sales Q/Q1600.00%SMA50-9.62%Rel Volume2.76Prev Close8.49
Employees163LT Debt/Eq0.04Earnings-SMA200-7.33%Avg Volume504.69KPrice8.93
IPO DateDec 18, 2012Option/ShortYes / YesEPS/Sales Surpr.-Net Debt/EBITDA4.31Volume1,390,833Change5.18%
Analyst Ratings
DateActionAnalystRatingTarget
Mar-13-26ReiteratedStifel Nicolaus$19
Dec-01-25ReiteratedJMP SecuritiesMarket Outperform$11 → $19
Dec-01-25ReiteratedDeutsche BankBuy$19
Oct-28-25ReiteratedUBSBuy$15 → $36
Oct-28-25ReiteratedPiper SandlerOverweight$36
Oct-07-25ReiteratedH.C. Wainwright$14 → $20
Sep-02-25ReiteratedJMP SecuritiesMarket Outperform$50 → $11
May-28-25DowngradeB of A SecuritiesNeutral → Underperform
May-27-25DowngradeOppenheimerOutperform → Perform
Aug-14-24ReiteratedOppenheimerOutperform$110 → $62
Latest News
Company
Ownership

Per-holder 13F data hasn't been ingested for this ticker yet.

Financial Statements
DataTimeframe
Line Item (USD, M)
TTM
—
FY 2025
12/31/2025
FY 2024
12/31/2024
FY 2023
12/31/2023
FY 2022
12/31/2022
FY 2021
12/31/2021
FY 2020
12/31/2020
FY 2019
12/31/2019
FY 2018
12/31/2018
Total Revenue1110135
Upgrade your experience to unlock full historical data
Cost of Goods Sold Incl. D&A2940
Gross Profit-186135
Selling, General and Administrative Excl. Other645967
Research and Development171135223
Other Operating Expense3-30
Operating Income-256-185-155
Interest Expense000
Unusual Expense
———
Non-Operating Income (Expense)-4616-26
Net Income Before Taxes-238-201-129
Income Taxes4243-7
Consolidated Net Income-281-244-122
Net Income From Continuing Operations-281-244-122
Net Income-281-244-122
EPS (Recurring)-5.22-4.53-2.27
EPS (Basic, Before Extraordinaries)-5.22-4.53-2.27
EPS (Diluted)-5.22-4.53-2.27
EBITDA-208-197-128
Other After Tax Adjustments
———
Stock Option Compensation Expense
———
Price To Earnings Ratio
———
Price To Sales Ratio43.8451.57—
Gross Margin-163.6460.00100.00
Operating Margin-2,327.27-1,850.00-114.81
Net Margin-2,554.55-2,440.00-90.37
Shares Outstanding545454
Market Capitalization482516—
Operating Lease Expense
———
Insider Trading Volume
$9.37$8.41$7.46$6.50$5.54● Close Price0.00M0.49M0.98M1.47M1.96MUSD Trades VolumeJunJulAugSepOctNovDec2026FebMarAprMayJun
Insider Trading
InsiderRelationshipDateTransactionCost#SharesValue ($)#Shares TotalSEC Form 4
SCULLY WILLIAM P10% OwnerJun 11 '26Buy8.17125,0001,021,2251,061,000Jun 12 12:00 AM
SCULLY WILLIAM P10% OwnerJun 04 '26Buy9.3150,000465,295936,000Jun 05 12:00 AM
SCULLY WILLIAM P10% OwnerJun 02 '26Buy9.4350,000471,300886,000Jun 03 12:00 AM
SCULLY WILLIAM P10% OwnerMay 22 '26Buy9.81100,000981,300836,000May 26 12:00 AM
EcoR1 Capital, LLC10% OwnerMay 06 '25Sale7.641,984,05315,164,7125,304,596May 06 12:00 AM
EcoR1 Capital, LLC10% OwnerMay 05 '25Sale8.11977,6937,930,1667,288,649May 06 12:00 AM
EcoR1 Capital, LLC10% OwnerMay 02 '25Sale8.363,317,93827,744,9298,266,342May 06 12:00 AM
SCULLY WILLIAM P10% OwnerJan 14 '25Buy12.79100,0001,279,040735,993May 02 12:00 AM
SCULLY WILLIAM P10% OwnerDec 31 '24Buy13.0132,000416,393650,193May 02 12:00 AM
SCULLY WILLIAM P10% OwnerDec 20 '24Buy15.912,00031,813618,693May 02 12:00 AM
SCULLY WILLIAM P10% OwnerDec 18 '24Buy13.9373,4361,022,6701,297,693May 02 12:00 AM
Walker Karin LChief Accounting OfficerJan 24 '24Option Exercise13.5310,000135,30015,000Jan 24 12:00 AM
Walker Karin LChief Accounting OfficerJan 24 '24Sale34.005,000170,0000Jan 24 12:00 AM
Walker Karin LChief Accounting OfficerDec 20 '23Option Exercise13.5310,000135,30020,000Dec 20 12:00 AM
Walker Karin LChief Accounting OfficerDec 20 '23Sale37.195,000185,9520Dec 20 12:00 AM
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