# Prothena (PRTA) — Earnings

PRTA · NASDAQ · Stock

Canonical page: https://www.lighthorse.io/tickers/prta/earnings

## Most recent quarter

| Metric | Value |
| --- | --- |
| Fiscal period | Q2 2026 |
| Period end | Jun 30, 2026 |
| EPS actual | −$0.36 |
| EPS estimate | −$0.36 |
| EPS surprise | −0.47% |
| Revenue surprise | +8.99% |
| Revenue | $1.0M |
| Revenue estimate | $926,667.00 |
| Reported | Aug 6, 2026 |
| SEC filing | [View filing](https://www.sec.gov:443/Archives/edgar/data/1559053/000155905326000022/prta-20260630.htm) |

## Earnings history

| Fiscal period | Report date | EPS estimate | EPS actual | Surprise | Revenue estimate | Revenue actual |
| --- | --- | --- | --- | --- | --- | --- |
| Q2 2026 | Aug 6, 2026 | −$0.36 | −$0.36 | -0.47% | $926,667.00 | $1.0M |
| Q1 2026 | May 7, 2026 | −$0.35 | $0.60 | 272.27% | $808,909.00 | $51.1M |
| Q4 2025 | Feb 19, 2026 | −$0.56 | −$0.40 | 28.39% | $1.3M | $21,000.00 |
| Q3 2025 | Nov 6, 2025 | −$0.69 | −$0.68 | 1.03% | $6.6M | $2.4M |
| Q2 2025 | Aug 4, 2025 | −$1.25 | −$2.34 | -86.63% | $6.1M | $4.4M |
| Q1 2025 | May 8, 2025 | −$0.97 | −$1.12 | -15.46% | $11.4M | $2.8M |
| Q4 2024 | Feb 20, 2025 | −$1.02 | −$1.08 | -5.54% | $7.5M | $2.1M |
| Q3 2024 | Nov 12, 2024 | −$1.17 | −$1.10 | 5.78% | $1.3M | $970,000.00 |
| Q2 2024 | Aug 8, 2024 | −$1.06 | $1.22 | 215.21% | $10.7M | $132.0M |
| Q1 2024 | May 8, 2024 | −$1.16 | −$1.34 | -15.77% | $2.2M | $50,000.00 |
| Q4 2023 | Feb 15, 2024 | −$1.18 | −$1.26 | -7.18% | $2.2M | $316,000.00 |
| Q3 2023 | Nov 2, 2023 | −$0.32 | $0.38 | 217.72% | $41.7M | $84.9M |
| Q2 2023 | Aug 3, 2023 | −$0.93 | −$1.03 | -10.42% | $5.1M | $4.0M |
| Q1 2023 | May 4, 2023 | −$0.87 | −$0.89 | -2.23% | $8.6M | $2.2M |
| Q4 2022 | Feb 23, 2023 | −$0.47 | $0.12 | 125.76% | $29.1M | $49.9M |
| Q3 2022 | Nov 3, 2022 | −$0.59 | −$0.97 | -65.78% | $25.2M | $1.5M |
| Q2 2022 | Aug 8, 2022 | −$0.52 | −$0.88 | -68.20% | $17.2M | $1.3M |
| Q1 2022 | May 5, 2022 | −$0.69 | −$0.78 | -12.83% | $8.1M | $1.2M |
| Q4 2021 | Feb 17, 2022 | −$0.58 | −$0.71 | -21.64% | $7.1M | $1.2M |
| Q3 2021 | Nov 4, 2021 | $2.26 | $2.13 | -5.90% | $140.0M | $139.2M |

## Frequently Asked Questions

### When did Prothena (PRTA) last report earnings?

Prothena last reported on Aug 6, 2026, covering fiscal Q2 2026.

### Did PRTA beat earnings estimates?

No. Prothena reported EPS of −$0.36 for Q2 2026 against a −$0.36 estimate — a 0.47% miss.

### How much revenue did PRTA report last quarter?

Prothena reported $1.0M in revenue for Q2 2026, against a consensus estimate of $926,667.00.

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Earnings figures may be restated, revised or corrected by the issuer. Past results do not indicate future performance.

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