PROTHENA CORPORATION PUBLIC LIMITED COMPANY (PRTA)

9.33 +2.64% (+0.24)

Over 1Y: +13.2%

2026-08-28
Style
Area Line Line with markers Steps Candlesneeds a shorter window Hollow candlesneeds a shorter window Barsneeds a shorter window

Candles need the day’s open, high and low. Those are being collected now — a company shows them once its history has been refreshed.

8 10
Aug Oct Dec Feb Apr Jun Aug

Financials Quarterly

Figures
Revenue Gross Profit Operating Income Cost of Revenue Operating Cash Flow Free Cash Flow Net Income

A share count and earnings a share are not here: neither is money, so neither can share this axis. Both have their own panel on All charts.

All charts ›
Q3 '21 — Revenue: 139.2M Q3 '21 — Operating Cash Flow: 112.1M Q3 '21 — Net Income: 109.2M Q4 '21 — Revenue: 1.2M Q4 '21 — Operating Cash Flow: -22.5M Q4 '21 — Net Income: -33.2M Q1 '22 — Revenue: 1.2M Q1 '22 — Operating Cash Flow: -37.4M Q1 '22 — Net Income: -36.3M Q2 '22 — Revenue: 1.3M Q2 '22 — Operating Cash Flow: -35.3M Q2 '22 — Net Income: -41.2M Q3 '22 — Revenue: 1.5M Q3 '22 — Operating Cash Flow: -31.2M Q3 '22 — Net Income: -45.8M Q4 '22 — Revenue: 49.9M Q4 '22 — Operating Cash Flow: -5M Q4 '22 — Net Income: 6.3M Q1 '23 — Revenue: 2.2M Q1 '23 — Operating Cash Flow: -47.5M Q1 '23 — Net Income: -46.9M Q2 '23 — Revenue: 4M Q2 '23 — Operating Cash Flow: -44.9M Q2 '23 — Net Income: -54.6M Q3 '23 — Revenue: 84.9M Q3 '23 — Operating Cash Flow: 9.5M Q3 '23 — Net Income: 21.9M Q4 '23 — Revenue: 316K Q4 '23 — Operating Cash Flow: -51M Q4 '23 — Net Income: -67.5M Q1 '24 — Revenue: 50K Q1 '24 — Operating Cash Flow: -73.1M Q1 '24 — Net Income: -72.2M Q2 '24 — Revenue: 132M Q2 '24 — Operating Cash Flow: 16M Q2 '24 — Net Income: 66.9M Q3 '24 — Revenue: 970K Q3 '24 — Operating Cash Flow: -45.2M Q3 '24 — Net Income: -59M Q4 '24 — Revenue: 2.1M Q4 '24 — Operating Cash Flow: -47.8M Q4 '24 — Net Income: -58M Q1 '25 — Revenue: 2.8M Q1 '25 — Operating Cash Flow: -53.4M Q1 '25 — Net Income: -60.2M Q2 '25 — Revenue: 4.4M Q2 '25 — Operating Cash Flow: -46.3M Q2 '25 — Net Income: -125.8M Q3 '25 — Revenue: 2.4M Q3 '25 — Operating Cash Flow: -40.6M Q3 '25 — Net Income: -36.5M Q4 '25 — Revenue: 21K Q4 '25 — Operating Cash Flow: -23.3M Q4 '25 — Net Income: -21.6M Q1 '26 — Revenue: 51.1M Q1 '26 — Operating Cash Flow: 28.9M Q1 '26 — Net Income: 32.7M Q2 '26 — Revenue: 1M Q2 '26 — Operating Cash Flow: -25M Q2 '26 — Net Income: -18.6M -120M -60M 0 60M 120M 180M
Q4 '21 Q3 '22 Q2 '23 Q1 '24 Q4 '24 Q3 '25 Q2 '26
Revenue Operating Cash Flow Free Cash Flow Net Income

Figures as at 2026-06-30, reported in USD. The newest fact in the filings is dated 2026-06-30, 61 days ago. Nothing on this page is advice.

How it scores

Five questions, each answered by the measures under it. Every figure is the company's own; the bar beside it is where that figure sits among the companies read here — the top fifth, the bottom fifth, or somewhere between. Not among all listed companies, and for a valuation multiple the low end is the good end.

Quality

How much of the revenue is really kept — and what did it take to earn it?

0.6
SBC / sales 53.3%
OE margin -163.4%
Oper. margin -101.8%
Accruals 5.3%
EBITDA margin -100.3%
FCF margin -110.1%
OCF margin -110.1%
Profit margin -80.7%
ROA -14.5%
ROCE -19.1%
ROE -15.3%
Capex / sales —
Gross margin —
OCF / EBIT —
ROIC —

4 of 17 counted in the score. The rest are measures this model does not include here, or figures these filings do not carry — switch any of them on and the score changes.

Valuation

What does the price ask for what the company earns, owns and pays out?

0.5
Div. yield —
EV/EBIT —
EV/GP —
EV/OE —
EV/Sales —
FCF yield —
Fwd P/E —
P/B —
P/C —
P/E —
PEG —

0 of 12 counted in the score. The rest are measures this model does not include here, or figures these filings do not carry — switch any of them on and the score changes.

Durability

How predictable is the revenue, and how much of it is already committed?

1.1
RPO / sales 0.011×
RPO growth —
Segment HHI —

3 of 7 counted in the score. The rest are measures this model does not include here, or figures these filings do not carry — switch any of them on and the score changes.

Resilience

Can the balance sheet absorb a bad year?

8.3
Current ratio 26.5×
ND/EBITDA —
Cash runway 4.8 yr
Debt / Eq 0.0×
Debt payback 0.0 yr
Quick ratio 25.0×
F-score 1.3 pts
Cash / Debt —
Interest cover —
Payout —

3 of 12 counted in the score. The rest are measures this model does not include here, or figures these filings do not carry — switch any of them on and the score changes.

Growth

Is the business getting bigger, and is it getting more profitable?

7.3
Sales/sh Y/Y +426.8%
Sales CAGR 4Y -53.1%
Shares change +0.11%
Sales Q/Q -77.1%
Div. growth —
EBIT CAGR —
EBIT Y/Y —
EPS CAGR 4Y —
EPS Y/Y —
EPS next Y —

4 of 13 counted in the score. The rest are measures this model does not include here, or figures these filings do not carry — switch any of them on and the score changes.

A measure absent from a block could not be computed from this company's filings. It is left out rather than scored as though it were bad, and the dimension is averaged over what remains. A score is measured against a fixed scale this model states; the bar is measured against the other companies, so the two can disagree — and where they do, that disagreement is the more interesting figure.