Prothena Corp Public (PRTA) Profit After Tax (2012 - 2026)
Prothena Corp Public (PRTA) posted Profit After Tax of -$18.58 million for Q2 2026, compared with -$125.77 million a year earlier.
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Analysis
Prothena Corp Public (PRTA) Profit After Tax (2012 - 2026) Analysis & Trends
For the trailing twelve months through Jun 30, 2026, Profit After Tax at Prothena Corp Public was -$43.92 million; for FY2025, it was -$244.09 million.
- In prior years, Prothena Corp Public's Profit After Tax was -$122.31 million in FY2024, -$147.03 million in FY2023, -$116.95 million in FY2022 and $66.98 million in FY2021.
- Quarterly Profit After Tax has run from a low of -$125.77 million in Q2 2025 to a high of $109.25 million in Q3 2021 over five years.
- According to Business Quant data, Profit After Tax for the three prior quarters was $32.72 million (Q1 2026), -$21.54 million (Q4 2025) and -$36.51 million (Q3 2025).
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | PAT (Qtr) |
|---|---|---|---|---|---|
| 1 | Johnson & Johnson | 638.12 Bn | 556.64 Bn | 17.26 Bn | 5.53 Bn |
| 2 | AbbVie | 462.60 Bn | 435.75 Bn | 12.70 Bn | 3.62 Bn |
| 3 | Merck | 358.70 Bn | 313.13 Bn | 12.21 Bn | -1.34 Bn |
| 4 | Novartis Ag | 272.16 Bn | 228.03 Bn | 11.24 Bn | 5.28 Bn |
| 5 | Astrazeneca | 250.36 Bn | 223.92 Bn | 12.86 Bn | 3.09 Bn |
| 6 | Amgen | 227.87 Bn | 183.27 Bn | 7.24 Bn | 2.38 Bn |
| 7 | Gilead Sciences | 184.97 Bn | 159.08 Bn | 6.22 Bn | -10.50 Bn |
| 8 | Pfizer | 162.61 Bn | 109.56 Bn | 10.94 Bn | -246.00 Mn |
| 9 | Vertex Pharmaceuticals | 132.45 Bn | 104.46 Bn | 2.84 Bn | 1.10 Bn |
| 10 | Prothena Corp Public | 433.62 Mn | -822.46 Mn | - | -18.58 Mn |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | -18.58 Mn |
| Mar 31, 2026 | 32.72 Mn |
| Dec 31, 2025 | -21.54 Mn |
| Sep 30, 2025 | -36.51 Mn |
| Jun 30, 2025 | -125.77 Mn |
| Mar 31, 2025 | -60.17 Mn |
| Dec 31, 2024 | -57.98 Mn |
| Sep 30, 2024 | -59.00 Mn |
| Jun 30, 2024 | 66.89 Mn |
| Mar 31, 2024 | -72.24 Mn |
| Dec 31, 2023 | -67.48 Mn |
| Sep 30, 2023 | 21.92 Mn |
| Jun 30, 2023 | -54.60 Mn |
| Mar 31, 2023 | -46.86 Mn |
| Dec 31, 2022 | 6.30 Mn |
| Sep 30, 2022 | -45.72 Mn |
| Jun 30, 2022 | -41.24 Mn |
| Mar 31, 2022 | -36.26 Mn |
| Dec 31, 2021 | -33.14 Mn |
| Sep 30, 2021 | 109.25 Mn |
API Access
Prothena Corp Public Profit After Tax API
Pull this series into your own models, spreadsheets and apps with the Business Quant
Historical Metrics API. The request below matches the chart above — change the
frequency, period or values and it follows. Swap YOUR_API_KEY for your own key.
https://data.businessquant.com/historic?slug=profit-after-tax&ticker=PRTA&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "profit-after-tax", "ticker": "PRTA", "period": "max", "api_key": "YOUR_API_KEY"}
data = requests.get(url, params=params).json()const res = await fetch("https://data.businessquant.com/historic?slug=profit-after-tax&ticker=PRTA&period=max&api_key=YOUR_API_KEY");
const data = await res.json();