$9.20
3.66%
Nasdaq, Jan 02, 10:00 pm CET
ISIN
IE00B91XRN20
Symbol
PRTA

Prothena Corp. Plc Target price 2026 - Analyst rating & recommendation

Prothena Corp. Plc Classifications & Recommendation:

Buy
69%
Hold
23%
Sell
8%

Prothena Corp. Plc Price Target

Target Price $18.87
Price $9.20
Potential
Number of Estimates 8
8 Analysts have issued a price target Prothena Corp. Plc 2027 . The average Prothena Corp. Plc target price is $18.87. 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 2027 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 11.28
47.93% 91.65%
EBITDA Margin -113.69% 0.00%
45.36% 100.00%
Net Margin -90.49% -2,300.15%
43.76% 2,441.81%

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

$11.3m
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. This is
4.30% lower
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than the revenue of the last 12 months(TTM). The highest sales forecast is
$15.8m 33.59%
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, the lowest is
$9.4m 20.09%
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.

This results in the following potential growth metrics:

Revenue Estimates

2024 $135m 47.93%
2025
$11.3m 91.65%
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2026
$104m 819.08%
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2027
$34.7m 66.56%
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2028
$103m 197.29%
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2029
$102m 0.81%
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2030
$271m 164.90%
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2031
$297m 9.54%
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2032
$396m 33.52%
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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

$-260m
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. This is
7.46% higher
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than the net profit for the last 12 months(TTM). The highest net profit forecast is
$-255m 8.91%
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, the lowest is
$-266m 5.20%
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.

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

Net Profit Estimates

2024 $-122m 16.81%
2025
$-260m 112.19%
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2026
$-17.9m 93.10%
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2027
$-46.3m 158.66%
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2028
$-4.7m 89.91%
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2029
$-78.2m 1,575.37%
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2030
$149m 290.53%
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2031
$61.0m 59.11%
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2032
$125m 104.94%
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Net Margin

2024 -90.49% 43.76%
2025
-2,300.15% 2,441.81%
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2026
-17.26% 99.25%
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2027
-133.52% 673.58%
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2028
-4.53% 96.61%
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2029
-76.51% 1,588.96%
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2030
55.03% 171.93%
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2031
20.54% 62.67%
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2032
31.53% 53.51%
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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 -4.82
17.75% 112.33%
P/E negative
EV/Sales 14.57

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

$-4.82
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. This is
7.49% higher
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than earnings per share in the financial year 2024. The highest EPS forecast is
$-4.75 8.83%
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, the lowest is
$-4.94 5.18%
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.

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

Earnings Per Share

2024 $-2.27 17.75%
2025
$-4.82 112.33%
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2026
$-0.33 93.15%
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2027
$-0.86 160.61%
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2028
$-0.09 89.53%
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2029
$-1.45 1,511.11%
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2030
$2.77 291.03%
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2031
$1.13 59.21%
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2032
$2.32 105.31%
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P/E ratio

Current -1.77 71.43%
2025
-1.91 8.17%
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2026
-27.67 1,348.69%
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2027
-10.70 61.33%
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2028
-106.11 891.68%
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2029
-6.33 94.03%
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2030
3.32 152.45%
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2031
8.13 144.88%
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2032
3.96 51.29%
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Based on analysts' sales estimates for 2025, the Prothena Corp. Plc stock is valued at an EV/Sales of

14.57
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and an P/S ratio of
43.89
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.

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

EV/Sales

Current 13.94 527.93%
2025
14.57 4.52%
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2026
1.59 89.12%
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2027
4.74 199.03%
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2028
1.59 66.36%
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2029
1.61 0.81%
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2030
0.61 62.25%
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2031
0.55 8.70%
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2032
0.41 25.11%
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P/S ratio

Current 42.00 587.56%
2025
43.89 4.49%
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2026
4.78 89.12%
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2027
14.28 199.02%
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2028
4.80 66.36%
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2029
4.84 0.81%
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2030
1.83 62.25%
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2031
1.67 8.71%
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2032
1.25 25.11%
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Current Prothena Corp. Plc Upgrades & Downgrades

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Analyst Rating Action Date
Citizens
Locked
Locked
Locked Dec 01 2025
HC Wainwright & Co.
Locked
Locked
Locked Nov 07 2025
RBC Capital
Locked
Locked
Locked Nov 07 2025
Piper Sandler
Locked
Locked
Locked Oct 28 2025
HC Wainwright & Co.
Locked
Locked
Locked Oct 07 2025
JMP Securities
Locked
Locked
Locked Sep 02 2025
Piper Sandler
Locked
Locked
Locked Aug 28 2025
Analyst Rating Date
Locked
Citizens:
Locked
Locked
Dec 01 2025
Locked
HC Wainwright & Co.:
Locked
Locked
Nov 07 2025
Locked
RBC Capital:
Locked
Locked
Nov 07 2025
Locked
Piper Sandler:
Locked
Locked
Oct 28 2025
Locked
HC Wainwright & Co.:
Locked
Locked
Oct 07 2025
Locked
JMP Securities:
Locked
Locked
Sep 02 2025
Locked
Piper Sandler:
Locked
Locked
Aug 28 2025

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