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PROTHENA CORP PLC

PRTANASDAQ
πŸ† #2935 by market capEarnings Feb 17 Β· PostUS Equity
$8.89β–Ό $0.23 (βˆ’2.52%)
Pre-market Β· at close
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24hβ–Ό 2.5%
7dβ–² 8.3%
14dβ–² 6.3%
30dβ–² 6.2%
ytdβ–Ό 6.8%
1yβ–Ό 15.3%
🏦Market Cap
$456M
Small Cap
πŸ“ˆRevenue Growth (YoY)
-92.8%
Declining
πŸ“ŠGross Margin
43.5%
Healthy
πŸ’΅FCF Margin
-111.3%
Thin
βš–οΈP/S Ratio
8.4x
Elevated
Otter Score
52
Fair

Trading Snapshot

Day Range
$8.75 – $9.18
52-Week Range
$7.73 – $11.80
Volume (shares)
35,185
Avg Volume (shares)
β€”
Shares Outstanding
51.3M
Next Earnings
2027-02-17

Fundamentals Snapshot

Annual Revenue
$10M
Last Q Revenue
$1M
P/E Ratio
-10.7
P/S Ratio
8.4x
EPS (TTM)
$-0.84
Dividend Yield
0.00%
Dilution (1yr)
+0.0%
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PROTHENA CORP PLC

PRTA
Financial Trends
RevenueThe total money the company brought in from sales, before subtracting any costs.
$10Mβ–Ό βˆ’92.8% YoY
Gross MarginOf every $1 of sales, how much is left after the direct cost of making the product/service. Higher = more efficient.
61.8%β–Ό βˆ’38.2% YoY
Operating IncomeProfit from the core business after operating costs, but before interest and taxes. Negative means the core business isn’t profitable yet.
βˆ’$185Mβ–² +19.4% YoY
Free Cash FlowCash left over after running the business and paying for equipment/capex. Negative means the company is burning cash.
βˆ’$164Mβ–² +8.9% YoY
Shares OutstandingHow many shares exist. Rising means the company is issuing more shares, which dilutes (shrinks) each existing owner’s slice.
53.8Mβ–² +0.0% YoY
Net CashCash minus total debt. Positive = more cash than debt (financially strong); negative = more debt than cash (net debt).
$294Mβ–Ό βˆ’$167M YoY
StockOtter Β· stockotter.space

About PROTHENA CORP PLC

Prothena Corporation plc, a late-stage clinical biotechnology company, focuses on discovery and development of novel therapies to treat diseases caused by protein dysregulation. Its product pipeline includes Prasinezumab, an investigational humanized monoclonal antibody which is in Phase 3 clinical trial for the treatment of parkinson's disease and other synucleinopathies. The company also develops Coramitug, an investigational antibody, which is in Phase 3 clinical trial for the treatment of transthyretin amyloidosis; BMS-986446, an anti-tau antibody which is in Phase 2 clinical trial to treat Alzheimer's disease; PRX019, an investigational antibody which is in Phase 1 clinical trial for the treatment of neurodegenerative diseases; and PRX123, a Dual Aß-Tau Vaccine, which is in preclinical trial for treating Alzheimer's disease. In addition, it develops discovery- and late-preclinical-stage programs include TDP-43 CYTOPE for the treatment of amyotrophic lateral sclerosis; PRX012, a next-generation anti-Aß antibody which is in phase 1 clinical trial to treat Alzheimer's disease; and PRX012-TfR, a preclinical program for the treatment of Alzheimer's disease. It has a license, development, and commercialization agreement with F. Hoffmann-La Roche Ltd. and Hoffmann-La Roche Inc. to develop and commercialize antibodies that target a-synuclein, including prasinezumab; and master collaboration agreement with Bristol Myers Squibb to develop and commercialize antibodies targeting tau, TDP-43. Prothena Corporation plc was incorporated in 2012 and is based in Dublin, Ireland.

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Otter Score Breakdown

How it's scoredFive components, each rated 1–5β˜… and equally weighted (20%), averaged to a 0–100 score:πŸ’Ž Quality β€” gross marginπŸš€ Growth β€” revenue YoYβš–οΈ Valuation β€” P/S ratio⚑ Momentum β€” 30-day price changeπŸ’§ Dilution β€” 1-yr share issuance (buybacks score higher)
πŸ’ŽQualityβ˜…β˜…β˜…β˜…β˜…
πŸš€Growthβ˜…β˜…β˜…β˜…β˜…
βš–οΈValuationβ˜…β˜…β˜…β˜…β˜…
⚑Momentumβ˜…β˜…β˜…β˜…β˜…
πŸ’§Dilutionβ˜…β˜…β˜…β˜…β˜…
Overall Score
Fair
52/100

Analyst Ratings

β“˜
Consensus
Buy
12 analysts
Strong Buy2
Buy6
Hold3
Sell1
Strong Sell0
Ratings as of Oct 2026

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