Prothena Corp Public LTD Co (PRTA) Financial Statements
Industry: Pharmaceutical Preparations
In fiscal 2025, Prothena Corp Public reported revenue of $9.7M, down 92.8% from $135.2M the year before. Net income was -$244.1M (a -2520.6% net margin), or -$4.53 per diluted share. Operating margin was -2216.4%. Operating activities generated -$163.6M of cash. At fiscal year end, Prothena Corp Public held $326.8M in total assets against $46.3M in total liabilities, including $307.5M of cash and equivalents.
Open the full interactive Prothena Corp Public financials → Quarterly statements, key ratios, valuation history and price charts.
Prothena Corp Public Key Stats
| Share Price | $8.36 |
|---|---|
| Market Cap | $435.9M |
| Revenue YoY Growth | -92.8% |
| 52-Week Range | $7.91 – $11.51 |
| Shares Outstanding | 52.1 million (basic, 2026 Q2) |
Prothena Corp Public Income Statement
| FY 2020 | FY 2021 | FY 2022 | FY 2023 | FY 2024 | FY 2025 | |
|---|---|---|---|---|---|---|
| Revenue | $853,000 | $200.6M | $53.9M | $91.4M | $135.2M | $9.7M |
| Operating Income | -$112.7M | $72.0M | -$131.6M | -$191.0M | -$154.6M | -$214.6M |
| Pre-Tax Income | -$111.4M | $71.9M | -$125.6M | -$160.5M | -$128.9M | -$200.8M |
| Income Tax | -$283,000 | $4.9M | -$8.7M | -$13.5M | -$6.6M | $43.3M |
| Net Income | -$111.1M | $67.0M | -$116.9M | -$147.0M | -$122.3M | -$244.1M |
| Diluted EPS | -$0.77 | $1.38 | -$2.47 | -$2.76 | -$2.27 | -$4.53 |
Prothena Corp Public Quarterly Results
| 2025 Q3 | 2025 Q4 | 2026 Q1 | 2026 Q2 | |
|---|---|---|---|---|
| Revenue | $2.4M | $21,000 | $51.1M | $1.0M |
| Net Income | -$36.5M | -$21.6M | $32.7M | -$18.6M |
| Diluted EPS | -$0.68 | -$0.40 | $0.60 | -$0.36 |
Prothena Corp Public Balance Sheet
| FY 2020 | FY 2021 | FY 2022 | FY 2023 | FY 2024 | FY 2025 | |
|---|---|---|---|---|---|---|
| Cash & Equivalents | $295.4M | $579.1M | $710.4M | $618.8M | $471.4M | $307.5M |
| Current Assets | $299.3M | $584.8M | $719.1M | $639.3M | $485.4M | $315.2M |
| Total Assets | $333.0M | $609.4M | $758.0M | $696.4M | $547.1M | $326.8M |
| Current Liabilities | $25.8M | $33.5M | $50.1M | $56.9M | $48.5M | $40.8M |
| Total Liabilities | $149.0M | $143.3M | $136.0M | $135.0M | $60.2M | $46.3M |
| Shareholders' Equity | $184.0M | $466.0M | $622.0M | $561.4M | $486.9M | $280.5M |
Prothena Corp Public Cash Flow Statement
| FY 2020 | FY 2021 | FY 2022 | FY 2023 | FY 2024 | FY 2025 | |
|---|---|---|---|---|---|---|
| Cash From Operations | -$80.4M | $92.6M | -$108.8M | -$133.9M | -$150.1M | -$163.6M |
| Cash From Investing | -$196,000 | -$575,000 | -$464,000 | -$2.8M | -$298,000 | -$138,000 |
| Cash From Financing | $215,000 | $190.3M | $241.5M | $45.1M | $1.6M | -$139,000 |
Figures from Prothena Corp Public's 10-K and 10-Q filings with the SEC, as of 2026-10-14. Fiscal years follow the company's own reporting calendar. EPS and share counts are adjusted for later stock splits. See the full Prothena Corp Public financials page for every line item.
Prothena Corp Public Company Profile
| Ticker | PRTA |
|---|---|
| Exchange | Nasdaq |
| Industry | Pharmaceutical Preparations |
| Headquarters | Dublin 2, Ireland |
| Fiscal Year End | December 31 |
| SEC Filer Category | Accelerated filer |
| SEC CIK | 0001559053 |
Frequently Asked Questions
What was Prothena Corp Public's revenue in fiscal 2025?
Prothena Corp Public (PRTA) reported revenue of $9.7M for fiscal 2025.
What is Prothena Corp Public's annual revenue history?
Prothena Corp Public's annual revenue by fiscal year: 2020: $853,000; 2021: $200.6M; 2022: $53.9M; 2023: $91.4M; 2024: $135.2M; 2025: $9.7M.
What was Prothena Corp Public's net income in fiscal 2025?
Prothena Corp Public reported net income of -$244.1M for fiscal 2025.
What was Prothena Corp Public's earnings per share (EPS) in fiscal 2025?
Prothena Corp Public's diluted EPS was -$4.53 for fiscal 2025 (adjusted for any later stock splits).
What was Prothena Corp Public's revenue last quarter?
In its most recent reported quarter (2026 Q2), Prothena Corp Public reported revenue of $1.0M.
How many shares of Prothena Corp Public are outstanding?
Prothena Corp Public reported a weighted average of 52.1 million basic shares outstanding in 2026 Q2.
What is Prothena Corp Public's market cap?
Based on its latest closing price, Prothena Corp Public (PRTA) has a market capitalization of about $435.9M.
When does Prothena Corp Public's fiscal year end?
Prothena Corp Public's fiscal year end, as registered with the SEC, is December 31.
Where is Prothena Corp Public headquartered?
Prothena Corp Public lists its business address in Dublin 2, Ireland in its SEC filings.