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PROTHENA CORP PLC (PRTA) Stock Fundamental Analysis

USA - NASDAQ:PRTA - IE00B91XRN20 - Common Stock

8.06 USD
-0.1 (-1.23%)
Last: 9/17/2025, 8:00:01 PM
8.04 USD
-0.02 (-0.25%)
After Hours: 9/17/2025, 8:00:01 PM
Fundamental Rating

3

PRTA gets a fundamental rating of 3 out of 10. The analysis compared the fundamentals against 540 industry peers in the Biotechnology industry. No worries on liquidiy or solvency for PRTA as it has an excellent financial health rating, but there are worries on the profitability. PRTA is valued expensive and it does not seem to be growing.


Dividend Valuation Growth Profitability Health

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0

1. Profitability

1.1 Basic Checks

PRTA had negative earnings in the past year.
In the past year PRTA has reported a negative cash flow from operations.
PRTA had negative earnings in 4 of the past 5 years.
PRTA had negative operating cash flow in 4 of the past 5 years.
PRTA Yearly Net Income VS EBIT VS OCF VS FCFPRTA Yearly Net Income VS EBIT VS OCF VS FCFYearly Net Income VS EBIT VS OCF VS FCF 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 0 50M -50M -100M -150M

1.2 Ratios

The Return On Assets of PRTA (-75.91%) is worse than 65.93% of its industry peers.
PRTA has a Return On Equity (-93.40%) which is in line with its industry peers.
Industry RankSector Rank
ROA -75.91%
ROE -93.4%
ROIC N/A
ROA(3y)-19.63%
ROA(5y)-16.25%
ROE(3y)-23.37%
ROE(5y)-23.22%
ROIC(3y)N/A
ROIC(5y)N/A
PRTA Yearly ROA, ROE, ROICPRTA Yearly ROA, ROE, ROICYearly ROA, ROE, ROIC 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 0 -20 -40 -60

1.3 Margins

PRTA does not have Profit Margin and Operating Margin and Gross Margin available, so we won't be analyzing them here.
Industry RankSector Rank
OM N/A
PM (TTM) N/A
GM N/A
OM growth 3YN/A
OM growth 5YN/A
PM growth 3YN/A
PM growth 5YN/A
GM growth 3YN/A
GM growth 5YN/A
PRTA Yearly Profit, Operating, Gross MarginsPRTA Yearly Profit, Operating, Gross MarginsYearly Profit, Operating, Gross Margins 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 0 -5K -10K -15K

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2. Health

2.1 Basic Checks

PRTA does not have a ROIC to compare to the WACC, probably because it is not profitable.
Compared to 1 year ago, PRTA has more shares outstanding
PRTA has more shares outstanding than it did 5 years ago.
There is no outstanding debt for PRTA. This means it has a Debt/Equity and Debt/FCF ratio of 0 and it is amongst the best of the sector and industry.
PRTA Yearly Shares OutstandingPRTA Yearly Shares OutstandingYearly Shares Outstanding 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 10M 20M 30M 40M 50M
PRTA Yearly Total Debt VS Total AssetsPRTA Yearly Total Debt VS Total AssetsYearly Total Debt VS Total Assets 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 200M 400M 600M

2.2 Solvency

Based on the Altman-Z score of -2.11, we must say that PRTA is in the distress zone and has some risk of bankruptcy.
Looking at the Altman-Z score, with a value of -2.11, PRTA is in line with its industry, outperforming 51.67% of the companies in the same industry.
There is no outstanding debt for PRTA. This means it has a Debt/Equity and Debt/FCF ratio of 0 and it is amongst the best of the sector and industry.
Industry RankSector Rank
Debt/Equity 0
Debt/FCF N/A
Altman-Z -2.11
ROIC/WACCN/A
WACC7.49%
PRTA Yearly LT Debt VS Equity VS FCFPRTA Yearly LT Debt VS Equity VS FCFYearly LT Debt VS Equity VS FCF 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 0 200M 400M 600M

2.3 Liquidity

A Current Ratio of 5.68 indicates that PRTA has no problem at all paying its short term obligations.
PRTA's Current ratio of 5.68 is fine compared to the rest of the industry. PRTA outperforms 61.11% of its industry peers.
PRTA has a Quick Ratio of 5.68. This indicates that PRTA is financially healthy and has no problem in meeting its short term obligations.
Looking at the Quick ratio, with a value of 5.68, PRTA is in the better half of the industry, outperforming 61.30% of the companies in the same industry.
Industry RankSector Rank
Current Ratio 5.68
Quick Ratio 5.68
PRTA Yearly Current Assets VS Current LiabilitesPRTA Yearly Current Assets VS Current LiabilitesYearly Current Assets VS Current Liabilites 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 200M 400M 600M

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3

3. Growth

3.1 Past

The earnings per share for PRTA have decreased strongly by -403.00% in the last year.
The Revenue for PRTA has decreased by -95.24% in the past year. This is quite bad
The Revenue has been growing by 178.96% on average over the past years. This is a very strong growth!
EPS 1Y (TTM)-403%
EPS 3YN/A
EPS 5YN/A
EPS Q2Q%-241.8%
Revenue 1Y (TTM)-95.24%
Revenue growth 3Y-12.33%
Revenue growth 5Y178.96%
Sales Q2Q%-96.65%

3.2 Future

PRTA is expected to show quite a strong growth in Earnings Per Share. In the coming years, the EPS will grow by 8.47% yearly.
Based on estimates for the next years, PRTA will show a decrease in Revenue. The Revenue will decrease by -1.70% on average per year.
EPS Next Y-78.72%
EPS Next 2Y33.21%
EPS Next 3Y11.93%
EPS Next 5Y8.47%
Revenue Next Year-85.33%
Revenue Next 2Y1.51%
Revenue Next 3Y-21.59%
Revenue Next 5Y-1.7%

3.3 Evolution

When comparing the Revenue growth rate of the last years to the growth rate of the upcoming years, we see that the growth is decreasing.
PRTA Yearly Revenue VS EstimatesPRTA Yearly Revenue VS EstimatesYearly Revenue VS Estimates 2014 2016 2018 2020 2022 2024 2026 2028 2030 2032 100M 200M 300M 400M 500M
PRTA Yearly EPS VS EstimatesPRTA Yearly EPS VS EstimatesYearly EPS VS Estimates 2014 2016 2018 2020 2022 2024 2026 2028 2030 2032 0 2 -2 -4

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4. Valuation

4.1 Price/Earnings Ratio

The Price/Earnings Ratio is negative for PRTA. In the last year negative earnings were reported.
Besides the negative Price/Earnings Ratio, also the Forward Price/Earnings Ratio is negative for PRTA. No positive earnings are expected for the next year.
Industry RankSector Rank
PE N/A
Fwd PE N/A
PRTA Price Earnings VS Forward Price EarningsPRTA Price Earnings VS Forward Price Earnings ChartPrice Earnings - Forward Price Earnings PE FPE 0 20 40 60

4.2 Price Multiples

Industry RankSector Rank
P/FCF N/A
EV/EBITDA N/A
PRTA Per share dataPRTA EPS, Sales, OCF, FCF, BookValue per sharePer Share Data Per Share 0 2 -2 4 -4 6

4.3 Compensation for Growth

PEG (NY)N/A
PEG (5Y)N/A
EPS Next 2Y33.21%
EPS Next 3Y11.93%

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5. Dividend

5.1 Amount

PRTA does not give a dividend.
Industry RankSector Rank
Dividend Yield N/A

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PROTHENA CORP PLC

NASDAQ:PRTA (9/17/2025, 8:00:01 PM)

After market: 8.04 -0.02 (-0.25%)

8.06

-0.1 (-1.23%)

Chartmill FA Rating
GICS SectorHealth Care
GICS IndustryGroupPharmaceuticals, Biotechnology & Life Sciences
GICS IndustryBiotechnology
Earnings (Last)08-04 2025-08-04/amc
Earnings (Next)11-10 2025-11-10/amc
Inst Owners74.37%
Inst Owner Change-20%
Ins Owners20.17%
Ins Owner Change45.8%
Market Cap433.87M
Analysts75.38
Price Target12.24 (51.86%)
Short Float %9.33%
Short Ratio4.2
Dividend
Industry RankSector Rank
Dividend Yield N/A
Yearly DividendN/A
Dividend Growth(5Y)N/A
DPN/A
Div Incr Years0
Div Non Decr Years0
Ex-DateN/A
Surprises & Revisions
EPS beat(2)0
Avg EPS beat(2)-20.83%
Min EPS beat(2)-28.86%
Max EPS beat(2)-12.81%
EPS beat(4)1
Avg EPS beat(4)-8.72%
Min EPS beat(4)-28.86%
Max EPS beat(4)8.41%
EPS beat(8)3
Avg EPS beat(8)47.94%
EPS beat(12)5
Avg EPS beat(12)36.25%
EPS beat(16)5
Avg EPS beat(16)20.6%
Revenue beat(2)0
Avg Revenue beat(2)-37.48%
Min Revenue beat(2)-55.76%
Max Revenue beat(2)-19.2%
Revenue beat(4)0
Avg Revenue beat(4)-42.43%
Min Revenue beat(4)-72.37%
Max Revenue beat(4)-19.2%
Revenue beat(8)2
Avg Revenue beat(8)106.61%
Revenue beat(12)3
Avg Revenue beat(12)61.95%
Revenue beat(16)3
Avg Revenue beat(16)29.55%
PT rev (1m)-48.15%
PT rev (3m)-58.62%
EPS NQ rev (1m)5.87%
EPS NQ rev (3m)17.92%
EPS NY rev (1m)-2.17%
EPS NY rev (3m)-11.29%
Revenue NQ rev (1m)-1.66%
Revenue NQ rev (3m)-51.03%
Revenue NY rev (1m)-35.37%
Revenue NY rev (3m)-64.11%
Valuation
Industry RankSector Rank
PE N/A
Fwd PE N/A
P/S 41.96
P/FCF N/A
P/OCF N/A
P/B 1.34
P/tB 1.34
EV/EBITDA N/A
EPS(TTM)-5.03
EYN/A
EPS(NY)-0.52
Fwd EYN/A
FCF(TTM)-3.58
FCFYN/A
OCF(TTM)-3.58
OCFYN/A
SpS0.19
BVpS6.03
TBVpS6.03
PEG (NY)N/A
PEG (5Y)N/A
Profitability
Industry RankSector Rank
ROA -75.91%
ROE -93.4%
ROCE N/A
ROIC N/A
ROICexc N/A
ROICexgc N/A
OM N/A
PM (TTM) N/A
GM N/A
FCFM N/A
ROA(3y)-19.63%
ROA(5y)-16.25%
ROE(3y)-23.37%
ROE(5y)-23.22%
ROIC(3y)N/A
ROIC(5y)N/A
ROICexc(3y)N/A
ROICexc(5y)N/A
ROICexgc(3y)N/A
ROICexgc(5y)N/A
ROCE(3y)N/A
ROCE(5y)N/A
ROICexcg growth 3YN/A
ROICexcg growth 5YN/A
ROICexc growth 3YN/A
ROICexc growth 5YN/A
OM growth 3YN/A
OM growth 5YN/A
PM growth 3YN/A
PM growth 5YN/A
GM growth 3YN/A
GM growth 5YN/A
F-Score2
Asset Turnover0.03
Health
Industry RankSector Rank
Debt/Equity 0
Debt/FCF N/A
Debt/EBITDA N/A
Cap/Depr 20.11%
Cap/Sales 1.74%
Interest Coverage N/A
Cash Conversion N/A
Profit Quality N/A
Current Ratio 5.68
Quick Ratio 5.68
Altman-Z -2.11
F-Score2
WACC7.49%
ROIC/WACCN/A
Cap/Depr(3y)132.78%
Cap/Depr(5y)92.67%
Cap/Sales(3y)1.38%
Cap/Sales(5y)5.33%
Profit Quality(3y)N/A
Profit Quality(5y)N/A
High Growth Momentum
Growth
EPS 1Y (TTM)-403%
EPS 3YN/A
EPS 5YN/A
EPS Q2Q%-241.8%
EPS Next Y-78.72%
EPS Next 2Y33.21%
EPS Next 3Y11.93%
EPS Next 5Y8.47%
Revenue 1Y (TTM)-95.24%
Revenue growth 3Y-12.33%
Revenue growth 5Y178.96%
Sales Q2Q%-96.65%
Revenue Next Year-85.33%
Revenue Next 2Y1.51%
Revenue Next 3Y-21.59%
Revenue Next 5Y-1.7%
EBIT growth 1Y-172.53%
EBIT growth 3YN/A
EBIT growth 5YN/A
EBIT Next Year100%
EBIT Next 3YN/A
EBIT Next 5YN/A
FCF growth 1Y-48.8%
FCF growth 3YN/A
FCF growth 5YN/A
OCF growth 1Y-49.93%
OCF growth 3YN/A
OCF growth 5YN/A