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Research & education only — not financial advice.TENK is not a registered investment adviser; calls are impersonal, generated from SEC filings and a delayed/third-party price feed, and may be wrong or out of date. The operator and an affiliated trading operation may hold or trade the securities TENK rates — see Disclosures. Do your own research.

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TTENK/calls
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Pulling SEC filings + quote and writing the call…

TTENK/calls
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Home›PRTA›Financials
Annual statements · SEC XBRL · FY2016 – FY2025

PROTHENA CORP PUBLIC LTD CO (PRTA) financials

Income statement

PROTHENA CORP PUBLIC LTD CO (PRTA) income statement, annual, from SEC filings
Fiscal yearFY2016FY2017FY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Revenue$1.05M$27.5M$955K$814K$853K$201M$53.9M$91.4M$135M$9.68M
Revenue growth—2508.4%-96.5%-14.8%4.8%23414.3%-73.1%69.5%47.9%-92.8%
Operating income-$160M-$155M-$159M-$85.7M-$113M$72.0M-$132M-$191M-$155M-$215M
Operating margin-15121.8%-564.2%-16634.0%-10527.9%-13216.2%35.9%-244.1%-209.1%-114.4%-2216.4%
Net income-$160M-$153M-$156M-$77.7M-$111M$67.0M-$117M-$147M-$122M-$244M
Net margin-15176.1%-556.8%-16297.9%-9542.6%-13029.8%33.4%-217.0%-160.9%-90.5%-2520.6%
EPS (diluted)-$4.66-$4.07-$3.93-$1.95-$2.78$1.38-$2.47-$2.76-$2.27-$4.53

Cash flow

PROTHENA CORP PUBLIC LTD CO (PRTA) cash flow, annual, from SEC filings
Fiscal yearFY2016FY2017FY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Operating cash flow-$116M-$131M-$28.3M-$53.0M-$80.4M$92.6M-$109M-$134M-$150M-$164M

Balance sheet

PROTHENA CORP PUBLIC LTD CO (PRTA) balance sheet, annual, from SEC filings
Fiscal yearFY2016FY2017FY2018FY2019FY2020FY2021FY2022FY2023FY2024FY2025
Cash & equivalents$387M$418M$428M$376M$295M$579M$710M$619M$471M$308M
Total assets$460M$496M$499M$419M$333M$609M$758M$696M$547M$327M
Total liabilities$94.6M$89.1M$176M$146M$149M$143M$136M$135M$60.2M$46.3M
Shareholders' equity$365M$407M$323M$273M$184M$466M$622M$561M$487M$280M
Retained earnings-$289M-$442M-$598M-$672M-$783M-$716M-$833M-$980M-$1.10B-$1.35B
Shares (wtd avg diluted)34.8M38.5M39.9M39.9M39.9M48.5M47.4M53.2M53.8M53.8M

Every figure is extracted from PROTHENA CORP PUBLIC LTD CO’s annual reports as filed with the SEC (XBRL company facts) — no third-party estimates. Fiscal years are labeled by period end; filers occasionally re-tag concepts, so a sparse cell means the company didn’t report that concept for that year. Free cash flow = operating cash flow − capital expenditures.

Common questions

What is PROTHENA CORP PUBLIC LTD CO's annual revenue?
PROTHENA CORP PUBLIC LTD CO (PRTA) reported $9.68M of revenue for fiscal year 2025 — down 92.8% from $135M in FY2024, per its annual report filed with the SEC.
Is PROTHENA CORP PUBLIC LTD CO profitable?
Not in FY2025 — PRTA reported a net loss of $244M, per SEC filings.
Does PRTA pay a dividend?
PROTHENA CORP PUBLIC LTD CO reported no cash dividends paid in FY2025, per its SEC cash-flow statement.
Full PRTA analysis — verdict, score & filings →Is PRTA a buy? →

Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.