Prothena Corp Public (PRTA) Tax Rate (2012 - 2026)
Prothena Corp Public (PRTA) posted quarterly Tax Rate of 0.0% for Q1 2026, down 192.0% year-over-year from 0.0% in Q1 2025, and down 98.22% quarter-over-quarter from 0.17% in Q4 2025.
Prothena Corp Public (PRTA) Tax Rate (2012 - 2026) Analysis & Trends
Prothena Corp Public's Tax Rate history runs 15 years deep, the most recent figure standing at 0.0% for Q1 2026.
- In Q1 2026, Tax Rate fell 192.0% year-over-year to 0.0%; the TTM figure through Mar 2026 stood at 41.57% (down 4631.0% YoY), while the FY2025 annual figure was 21.54%, down 2668.0% from the prior year.
- Tax Rate for Q1 2026 stood at 0.0%, down from 0.17% in the prior quarter.
- The five-year high for Tax Rate was 7.3% in Q2 2023, with the low at 89.81% in Q4 2022.
- The 5-year median for Tax Rate is 1.92% (2025), against an average of 7.3%.
- The sharpest annual moves came in 2022 and 2023: Tax Rate sank 8967 bps in 2022, then jumped 9425 bps in 2023.
- Prothena Corp Public's Tax Rate stood at 89.81% in 2022, then surged by 105 bps to 4.45% in 2023, then plunged by 43 bps to 2.55% in 2024, then slumped by 93 bps to 0.17% in 2025, then plunged by 98 bps to 0.0% in 2026.
- Business Quant data shows PRTA's Tax Rate at 0.0% in Q1 2026, 0.17% in Q4 2025, and 1.08% in Q3 2025.
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Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Tax Rate (Qtr) |
|---|---|---|---|---|---|
| 1 | Vertex Pharmaceuticals | 128.13 Bn | 120.28 Bn | 2.84 Bn | 20.98% |
| 2 | Regeneron Pharmaceuticals | 112.33 Bn | 104.33 Bn | 3.93 Bn | 15.11% |
| 3 | Argenx Se | 53.24 Bn | 48.05 Bn | 1.41 Bn | 10.91% |
| 4 | Revolution Medicines | 43.64 Bn | 43.64 Bn | - | - |
| 5 | BeOne Medicines | 39.27 Bn | 34.17 Bn | 1.53 Bn | 24.15% |
| 6 | MindWalk Holdings | 35.32 Bn | 35.31 Bn | 1.82 Bn | -9.47% |
| 7 | Royalty Pharma | 33.72 Bn | 35.84 Bn | - | - |
| 8 | Alnylam Pharmaceuticals | 30.58 Bn | 27.27 Bn | 992.69 Mn | 7.49% |
| 9 | Insmed | 27.01 Bn | 25.85 Bn | 358.27 Mn | -16.71% |
| 10 | Prothena Corp Public | 458.45 Mn | 170.25 Mn | - | -0.01% |
Historic Data
Download Data| Date | Value |
|---|---|
| Jun 30, 2026 | -0.01% |
| Jun 30, 2026 | -0.01% |
| Jun 30, 2026 | -0.01% |
| Mar 31, 2026 | 0.00% |
| Mar 31, 2026 | 0.00% |
| Mar 31, 2026 | 0.00% |
| Dec 31, 2025 | 0.17% |
| Dec 31, 2025 | 0.17% |
| Dec 31, 2025 | 0.17% |
| Sep 30, 2025 | 1.08% |
| Sep 30, 2025 | 1.08% |
| Sep 30, 2025 | 1.08% |
| Jun 30, 2025 | -55.34% |
| Jun 30, 2025 | -55.34% |
| Jun 30, 2025 | -55.34% |
| Mar 31, 2025 | 1.92% |
| Mar 31, 2025 | 1.92% |
| Mar 31, 2025 | 1.92% |
| Dec 31, 2024 | 2.55% |
| Dec 31, 2024 | 2.55% |