NASDAQ:PRTA Prothena Q3 2025 Earnings Results & Report $8.49 +0.12 (+1.43%) As of 12:43 PM Eastern This is a fair market value price provided by Massive. Learn more. Prothena missed analyst expectations on both earnings and revenue in its Q3 2025 results, released November 6, 2025. The company reported EPS of -$0.67 versus the -$0.60 consensus estimate, while revenue of $2.42 million fell short of the $6.64 million estimate by $4.22 million. Research:ProfileEarnings HistoryForecast Earnings Announcement Details QuarterQ3 2025Report DateNovember 6, 2025TimeAfter Market ClosesConference Call4:00 PM ET Prothena EPS ResultsActual EPS-$0.67Consensus EPS -$0.60Beat/MissMissed by -$0.07One Year Ago EPSN/AEPS Beat Rate4 of last 8 quartersProthena Revenue ResultsActual Revenue$2.42 millionExpected Revenue$6.64 millionBeat/MissMissed by -$4.22 millionYoY Revenue GrowthN/AUpcoming EarningsProthena's Q3 2026 earnings is estimated for Thursday, November 5, 2026, based on past reporting schedules, with a conference call scheduled at 4:00 PM ET. Check back for transcripts, audio, and key financial metrics as they become available.Q3 2026 Earnings ReportConference Call ResourcesPress Release (8-K)Quarterly Report (10-Q)Earnings HistoryCompany ProfilePowered by Earnings DocumentsEarnings Release(8-K)Quarterly Report(10-Q) Prothena Q3 2025 Earnings FAQ Did Prothena beat earnings estimates for Q3 2025? Prothena (NASDAQ:PRTA) reported earnings of -$0.67 per share for Q3 2025, missing the consensus estimate of -$0.60. The report was announced on Thursday, November 6, 2025. What was Prothena's revenue for Q3 2025? Prothena reported revenue of $2.42 million for Q3 2025, against a consensus estimate of $6.64 million. When is Prothena's next earnings date? Prothena's next earnings date is estimated for Thursday, November 5, 2026. MarketBeat tracks confirmed and estimated earnings dates for Prothena on the company's earnings history page. Prothena Earnings HeadlinesProthena Corporation plc (PRTA) - What Are Brokerages Saying About This Stock?October 13 at 4:29 AM | americanbankingnews.comInsider Buying: Prothena (NASDAQ:PRTA) Major Shareholder Purchases $771,300.00 in StockOctober 12 at 4:09 AM | americanbankingnews.comTomorrow morning's stock alertOur research analysts are set to release their next stock idea tomorrow morning just before 12:00 PM Eastern. Don't miss your chance to be the first to see our next stock pick.October 15 at 1:00 AM | The Early Bird (Ad)Prothena (NASDAQ:PRTA) Major Shareholder Purchases $1,050,000.00 in StockOctober 12 at 4:08 AM | americanbankingnews.comProthena (NASDAQ: PRTA) insider buys $1.82 million of shares, lifts stakeOctober 12 at 3:02 AM | americanbankingnews.comKyntra Bio (NASDAQ:KYNB) & Prothena (NASDAQ:PRTA) Head to Head SurveyOctober 9, 2026 | americanbankingnews.comSee More Prothena Headlines Get Earnings Announcements in your inboxWant to stay updated on the latest earnings announcements and upcoming reports for companies like Prothena? Sign up for Earnings360's daily newsletter to receive timely earnings updates on Prothena and other key companies, straight to your email. Email Address About ProthenaProthena (NASDAQ:PRTA) is a clinical-stage biotechnology company focused on discovering and developing therapies for diseases caused by protein misfolding or abnormal protein accumulation. Its research programs target neurological and systemic disorders, including Alzheimer’s disease, Parkinson’s disease, and transthyretin amyloidosis. The company’s pipeline has included PRX012, an investigational next-generation antibody targeting amyloid beta for Alzheimer’s disease; prasinezumab, an anti-alpha-synuclein antibody being developed for Parkinson’s disease through a collaboration with Roche; and birtamimab, an investigational treatment designed to target misfolded light chains associated with AL amyloidosis. These candidates remain subject to clinical testing and regulatory review, and Prothena does not have a broad portfolio of commercially marketed products. Prothena was established in 2012 following the separation of neuroscience assets from Elan Corporation. The company is incorporated in Ireland and conducts research and development through operations and partnerships serving international markets. Its business model centers on applying expertise in protein biology and antibody development to create potential treatments for serious diseases with limited therapeutic options.View Prothena ProfileRead more More Earnings Resources from MarketBeat Earnings Tools Today's Earnings Tomorrow's Earnings Next Week's Earnings Upcoming Earnings Calls Earnings Newsletter Earnings Call Transcripts Earnings Beats & Misses Corporate Guidance Earnings Screener Latest Articles Apple Cut iPhone 18 Orders; What Does It Mean For Suppliers?Domino’s Pizza: As Cheap As It Gets, Nowhere to Go But UpCiti Stock Falls Despite Earnings Beat: What Investors Need to KnowDon’t Get NVIDIA’s Reflection AI Interest Wrong: Its Moat Could DeepenBig Banks Report Strong Earnings—So Why Are Shares Falling?UnitedHealth Beats on Earnings, But Investors Question Growth PathIREN Limited's AI Pivot Gains Traction—But Can Its Data Centers Deliver? 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