$8.07
1.34% day before yesterday
Nasdaq, Sep 19, 10:03 pm CET
ISIN
IE00B91XRN20
Symbol
PRTA

Prothena Corp. Plc Target price 2025 - Analyst rating & recommendation

Prothena Corp. Plc Classifications & Recommendation:

Buy
69%
Hold
23%
Sell
8%

Prothena Corp. Plc Price Target

Target Price $12.75
Price $8.07
Potential
Number of Estimates 8
8 Analysts have issued a price target Prothena Corp. Plc 2026 . The average Prothena Corp. Plc target price is $12.75. This is higher than the current stock price. The highest price target is , the lowest is .
A rating was issued by 13 analysts: 9 Analysts recommend Prothena Corp. Plc to buy, 3 to hold and 1 to sell.
Analysts don't have a crystal ball either, but they do represent the opinion of the market quite well. You should not take the price potential and the ratings as a recommendation to act. Rather, they serve as an additional building block for your own opinion or stock analysis.
Analyst Estimates: Analysts believe that the Prothena Corp. Plc stock has an average upside potential 2026 of . Most analysts recommend the Prothena Corp. Plc stock at Purchase.

Sales and Margin forecast 2025, 2026 to 2032

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Quarter Annually
Dec '24 2025
Estimates
Revenue Million $ 135.16 21.03
47.93% 84.44%
EBITDA Margin -113.69% 0.00%
45.36% 100.00%
Net Margin -90.49% -1,052.03%
43.76% 1,062.56%

9 Analysts have issued a sales forecast Prothena Corp. Plc 2025 . The average Prothena Corp. Plc sales estimate is

$21.0m
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. This is
103.41% higher
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than the revenue of the last 12 months(TTM). The highest sales forecast is
$86.4m 735.20%
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, the lowest is
$7.1m 31.78%
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.

This results in the following potential growth metrics:

Revenue Estimates

2024 $135m 47.93%
2025
$21.0m 84.44%
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2026
$148m 602.32%
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2027
$69.1m 53.22%
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2028
$136m 96.28%
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2029
$132m 2.99%
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2030
$351m 167.10%
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2031
$427m 21.49%
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2032
$527m 23.51%
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9 Prothena Corp. Plc Analysts have issued a net profit forecast 2025. The average Prothena Corp. Plc net profit estimate is

$-221m
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. This is
26.95% higher
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than the net profit for the last 12 months(TTM). The highest net profit forecast is
$-157m 48.13%
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, the lowest is
$-242m 20.06%
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.

This results in the following potential growth metrics and future Net Margins:

Net Profit Estimates

2024 $-122m 16.81%
2025
$-221m 80.91%
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2026
$-27.9m 87.39%
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2027
$-74.0m 165.10%
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2028
$-68.8m 7.00%
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2029
$-61.7m 10.36%
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2030
$84.3m 236.64%
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2031
$117m 38.44%
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2032
$203m 73.65%
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Net Margin

2024 -90.49% 43.76%
2025
-1,052.03% 1,062.56%
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2026
-18.89% 98.20%
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2027
-107.06% 466.75%
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2028
-50.73% 52.62%
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2029
-46.87% 7.61%
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2030
23.98% 151.16%
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2031
27.32% 13.93%
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2032
38.42% 40.63%
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Earnings per share, P/E ratio and EV/sales Estimates 2025, 2026 to 2032

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Quarter Annually
Dec '24 2025
Estimates
Earnings Per Share $ -2.27 -4.11
17.75% 81.06%
P/E negative
EV/Sales 2.99

9 Analysts have issued a Prothena Corp. Plc forecast for earnings per share. The average Prothena Corp. Plc EPS is

$-4.11
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. This is
27.00% higher
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than earnings per share in the financial year 2024. The highest EPS forecast is
$-2.92 48.13%
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, the lowest is
$-4.50 20.07%
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.

This results in the following potential growth metrics and future valuations:

Earnings Per Share

2024 $-2.27 17.75%
2025
$-4.11 81.06%
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2026
$-0.52 87.35%
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2027
$-1.37 163.46%
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2028
$-1.28 6.57%
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2029
$-1.15 10.16%
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2030
$1.57 236.52%
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2031
$2.17 38.22%
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2032
$3.76 73.27%
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P/E ratio

Current -1.43 94.04%
2025
-1.96 36.74%
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2026
-15.56 693.88%
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2027
-5.87 62.28%
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2028
-6.31 7.50%
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2029
-7.04 11.57%
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2030
5.15 173.15%
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2031
3.72 27.77%
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2032
2.14 42.47%
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Based on analysts' sales estimates for 2025, the Prothena Corp. Plc stock is valued at an EV/Sales of

and an P/S ratio of
20.65
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.

This results in the following potential growth metrics and future valuations:

EV/Sales

Current 6.09 111.46%
2025
2.99 50.84%
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2026
0.43 85.76%
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2027
0.91 113.75%
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2028
0.46 49.06%
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2029
0.48 3.08%
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2030
0.18 62.55%
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2031
0.15 17.69%
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2032
0.12 19.05%
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P/S ratio

Current 42.01 667.69%
2025
20.65 50.84%
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2026
2.94 85.76%
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2027
6.29 113.76%
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2028
3.20 49.05%
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2029
3.30 3.08%
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2030
1.24 62.56%
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2031
1.02 17.68%
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2032
0.82 19.04%
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Current Prothena Corp. Plc Upgrades & Downgrades

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Analyst Rating Action Date
JMP Securities
Locked
Locked
Locked Sep 02 2025
Chardan Capital
Locked
Locked
Locked Aug 28 2025
Piper Sandler
Locked
Locked
Locked Aug 28 2025
RBC Capital
Locked
Locked
Locked Aug 05 2025
Chardan Capital
Locked
Locked
Locked Aug 05 2025
HC Wainwright & Co.
Locked
Locked
Locked Aug 05 2025
Cantor Fitzgerald
Locked
Locked
Locked Jun 20 2025
Analyst Rating Date
Locked
JMP Securities:
Locked
Locked
Sep 02 2025
Locked
Chardan Capital:
Locked
Locked
Aug 28 2025
Locked
Piper Sandler:
Locked
Locked
Aug 28 2025
Locked
RBC Capital:
Locked
Locked
Aug 05 2025
Locked
Chardan Capital:
Locked
Locked
Aug 05 2025
Locked
HC Wainwright & Co.:
Locked
Locked
Aug 05 2025
Locked
Cantor Fitzgerald:
Locked
Locked
Jun 20 2025

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