PRTA
Prothena Corporation plc
8.80$
+2.7%
vs. previous close
Closing price · As of: Oct 9, 2026
Statements
Income Statement
All figures as a percentage of revenue in the same period.
Tick rows to compare them in a chart (up to 4)
| Line item | Q3 16 | Q4 16 | Q1 17 | Q2 17 | Q3 17 | Q4 17 | Q1 18 | Q2 18 | Q3 18 | Q4 18 | Q1 19 | Q2 19 | Q3 19 | Q4 19 | Q1 20 | Q2 20 | Q3 20 | Q4 20 | Q1 21 | Q2 21 | Q3 21 | Q4 21 | Q1 22 | Q2 22 | Q3 22 | Q4 22 | Q1 23 | Q2 23 | Q3 23 | Q4 23 | Q1 24 | Q2 24 | Q3 24 | Q4 24 | Q1 25 | Q2 25 | Q3 25 | Q4 25 | Q1 26 | Q2 26 | LTM* |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | |
| 9,383.9% | 23,300.6% | 9,922.0% | 126.9% | 18,865.3% | 14,629.7% | 15,289.0% | 11,273.1% | 7,260.8% | 8,510.3% | 7,148.4% | 5,738.3% | 6,090.7% | 6,043.4% | 10,814.2% | 8,856.9% | 13,761.1% | 5,766.7% | 13,215.0% | 35.1% | 12.9% | 1,882.1% | 2,364.4% | 2,406.2% | 2,627.6% | 73.9% | 2,063.4% | 1,393.7% | 68.2% | 19,585.8% | 1,774.0% | 43.6% | – | 43.0% | – | – | 1,198.3% | 4,485.7% | 1.8% | – | – | |
| -9,283.9% | -23,200.6% | -9,822.0% | -26.9% | -18,765.3% | -14,529.7% | 100.0% | -11,173.1% | -7,160.8% | -8,410.3% | -7,048.4% | -5,638.3% | -5,990.7% | -5,943.4% | -10,714.2% | -8,756.9% | -13,661.1% | -5,666.7% | -13,115.0% | 64.9% | 87.1% | -1,782.1% | -2,264.4% | -2,306.2% | -2,527.6% | 26.1% | -1,963.4% | -1,293.7% | 31.8% | -19,485.8% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | -1,098.3% | -4,385.7% | 98.2% | 100.0% | 43.5% | |
| 9,383.9% | 23,300.6% | 9,922.0% | 126.9% | 18,865.3% | 14,629.7% | 15,289.0% | 11,273.1% | 7,260.8% | 8,510.3% | 7,148.4% | 5,738.3% | 6,090.7% | 6,043.4% | 10,814.2% | 8,856.9% | 13,761.1% | 5,824.7% | 13,215.0% | 35.1% | 12.9% | 1,882.1% | 2,364.4% | 2,406.2% | 2,627.6% | 73.9% | 2,063.4% | 1,393.7% | 68.2% | 19,585.8% | 128,228.0% | 43.6% | 5,229.2% | 2,363.3% | 1,796.7% | 916.7% | 1,198.3% | 69,457.1% | 24.7% | 871.1% | 119.1% | |
| 5,642.0% | 5,616.4% | 4,182.2% | 40.7% | 5,679.5% | 6,132.8% | 6,268.3% | 3,939.8% | 3,621.6% | 4,137.1% | 5,325.3% | 5,437.7% | 4,239.5% | 3,148.0% | 6,908.5% | 4,951.8% | 5,986.0% | 2,752.2% | 6,953.1% | 18.4% | 8.6% | 1,041.5% | 1,026.5% | 987.2% | 790.3% | 26.3% | 633.4% | 361.1% | 19.6% | 5,360.8% | 34,928.0% | 12.2% | 1,727.8% | 793.6% | 622.3% | 360.0% | 548.2% | 60,219.0% | 24.8% | 1,079.1% | 90.7% | |
| 15,025.9% | 28,917.0% | 14,104.2% | 167.6% | 24,544.7% | 20,762.4% | 21,557.3% | 15,212.9% | 10,882.4% | 12,647.4% | 12,473.7% | 11,176.0% | 10,330.2% | 3,148.0% | 6,908.5% | 4,951.8% | 5,986.0% | 2,752.2% | 6,953.1% | 18.4% | 8.6% | 1,041.5% | 1,026.5% | 987.2% | 790.3% | 26.3% | 633.4% | 361.1% | 19.6% | 5,360.8% | 163,156.0% | 55.8% | 6,957.0% | 3,156.9% | 2,419.0% | 2,014.4% | 568.0% | 125,190.5% | 47.7% | 2,189.2% | 158.6% | |
| -14,925.9% | -28,817.0% | -14,004.2% | -67.6% | -24,444.7% | -20,662.4% | -21,457.3% | -22,605.4% | -9,538.4% | -11,729.4% | -12,340.9% | -11,076.0% | -10,230.2% | -9,091.4% | -17,622.7% | -13,708.7% | -19,647.1% | -8,418.9% | -20,068.1% | 46.5% | 78.5% | -2,823.5% | -3,290.9% | -3,293.4% | -3,317.9% | -0.1% | -2,596.8% | -1,654.7% | 12.1% | -24,846.5% | -163,056.0% | 44.2% | -6,857.0% | -3,056.9% | -2,319.0% | -1,914.4% | -1,666.3% | -129,576.2% | 50.5% | -2,089.2% | -115.1% | |
| 79.0% | 250.3% | 353.7% | 3.4% | 424.2% | 405.7% | 400.0% | 328.7% | 367.1% | 482.5% | 503.2% | 1,374.9% | 992.2% | 612.9% | 806.4% | 91.8% | 27.4% | 2.8% | 6.9% | 0.0% | 0.0% | 1.0% | 4.6% | 48.7% | 126.1% | 5.2% | 301.9% | 191.6% | – | 2,072.5% | – | – | – | – | – | – | – | – | – | – | – | |
| -14,971.3% | -28,391.8% | -14,303.1% | -70.8% | -24,702.7% | -20,729.7% | -21,489.0% | -22,160.6% | -9,253.7% | -11,293.8% | -11,111.3% | -9,560.5% | -9,258.5% | -8,368.4% | -16,597.9% | -13,347.2% | -19,338.9% | -8,434.2% | -20,046.9% | 46.4% | 78.5% | -2,823.9% | -3,002.5% | -3,042.4% | -2,841.9% | 18.7% | -2,026.4% | -1,251.3% | 29.5% | -20,358.9% | -148,880.0% | 49.1% | -6,168.7% | -2,802.7% | -2,170.2% | -1,831.8% | -1,497.7% | -102,757.1% | 64.1% | -1,839.7% | -80.0% | |
| 147.2% | 206.4% | -641.3% | -4.8% | -778.5% | 125.3% | -16.3% | -697.5% | 377.3% | 284.0% | 106.5% | -93.4% | 228.3% | 51.2% | 117.7% | 130.8% | 136.9% | 98.1% | 2,912.5% | 0.4% | 0.0% | 7.1% | 144.9% | 101.2% | 174.9% | 6.0% | 134.3% | 107.1% | 3.6% | 994.3% | -4,402.0% | -1.5% | -86.1% | -72.8% | -41.7% | 1,013.6% | 15.4% | 47.6% | 0.0% | 0.2% | 0.7% | |
| -15,118.5% | -28,598.2% | -13,661.8% | -66.0% | -23,924.2% | -20,855.0% | -21,472.7% | -21,463.1% | -9,631.0% | -11,577.8% | -11,217.7% | -9,467.1% | -9,486.8% | -8,419.5% | -16,715.6% | -13,477.9% | -19,475.8% | -8,532.2% | -22,959.4% | 46.0% | 78.5% | -2,831.0% | -3,147.4% | -3,143.6% | -3,016.7% | 12.7% | -2,160.6% | -1,358.4% | 25.8% | -21,353.2% | -144,478.0% | 50.7% | -6,082.6% | -2,729.9% | -2,128.5% | -2,845.4% | -1,513.1% | -102,804.8% | 64.1% | -1,839.9% | -80.7% | |
| -14,635.7% | -27,855.0% | -13,711.2% | -64.8% | -24,094.5% | -20,321.0% | -20,737.9% | -21,874.2% | -8,942.4% | -10,868.0% | -11,469.9% | -10,061.7% | -8,423.4% | -8,935.2% | -17,350.4% | -13,513.3% | -19,400.6% | -8,318.3% | -19,878.1% | 46.9% | 78.7% | -2,803.4% | -2,986.7% | -3,028.4% | -2,829.9% | 19.1% | -2,017.1% | -1,245.8% | 29.7% | -20,271.5% | -148,450.0% | 49.3% | -6,145.4% | -2,792.3% | -2,162.3% | -1,171.5% | -1,488.2% | -98,271.4% | 65.9% | -1,802.0% | -75.4% |
LTM = last twelve months (sum of the four most recent quarters).
Showing the most recent 40 periods — older statements are on file for this stock.
Data as of: October 9, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.