PROTHENA CORP PUBLIC LTD CO
Prothena develops therapeutic antibodies and other biologics targeting protein misfolding diseases, primarily neurodegenerative and rare amyloid disorders.
PROTHENA CORP PUBLIC LTD CO is a Healthcare company operating in Biotechnology with a $479.0M market cap.
Most recent reported earnings: Q2 FY2026 (Aug 2, 2026).
5 earnings calls indexed on Spoken Alpha.
Behavioral analysis
Disclosures
Extracted from Unknown source, 2026-06-21.
Transcripts
Most recent calls indexed for this ticker. Open any call to drill into prepared remarks and Q&A.
History
| Period | Reported | EPS actual | EPS consensus | EPS surprise | Revenue actual | Revenue consensus | Rev. surprise | Source |
|---|---|---|---|---|---|---|---|---|
| Q2 FY2026 |
Spoken Alpha tracks PRTA's historical accountability: how often management beat consensus, how the stock reacted, and how guidance evolved across the cycle. The figures below are illustrative placeholder data generated for layout — they will be replaced with real deviation metrics, True Consensus values, and EODHD price reactions as those data layers land.
Beats consensus 10/10 quarters but stock falls 60% of the time
SampleSpoken Alpha builds an accountability record per executive — how the person's own guidance, language, and reactions have evolved across every call they've appeared on. The one-liners below are illustrative placeholder data pending the deviation v1 work. Click any name for the full role timeline and call appearance history.
Peers
Sector peers tracked by Spoken Alpha. Each links to the same machine-readable IR surface — earnings calls, executives, and accountability scores.
API
The same data on this page is available as a machine-readable feed via the Spoken Alpha API. One call returns the IR URL, recent transcripts, and accountability scores for PRTA.
$ curl https://api.spokenalpha.com/v1/companies/PRTAFAQ
Spoken Alpha indexes PRTA's earnings call transcripts at https://spokenalpha.com/companies/PRTA. Each call links to attributed speakers and parsed analyst Q&A. PROTHENA CORP PUBLIC LTD CO's own investor relations page is at https://ir.prothena.com/overview/default.aspx.
PROTHENA CORP PUBLIC LTD CO (PRTA) held its most recent earnings call on 2026-02-19, covering fiscal Q4 2025.
PROTHENA CORP PUBLIC LTD CO (PRTA) operates in the Healthcare sector (Biotechnology industry).
| 2026-08-02 |
| — |
| $0.38 |
| — |
| — |
| — |
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EODHD |
Source: EODHD. PRTA reported actuals as published; sparse fields render as —.
When a company consistently beats but the stock doesn't react, consensus is usually set too low or the buy-side number is materially above sell-side. Watch for guidance walk-downs ahead of the print.
Raised guidance 8 quarters in a row
SampleConsecutive raises tighten the bar quarter over quarter. Watch the most recent print for the magnitude of the beat — a smaller beat against a higher bar is the early signal that the regime is breaking.
| Quarter | Actual EPS | Consensus | Surprise | 1D | 5D |
|---|---|---|---|---|---|
| Q1 FY2025 | $3.29 | $2.74 | +20.2% | +4.5% | +3.2% |
| Q4 FY2025 | $3.28 | $2.71 | +21.1% | +6.8% | +7.2% |
| Q3 FY2025 | $3.46 | $2.84 | +22.0% | -2.7% | -4.0% |
| Q2 FY2025 | $3.05 | $2.83 | +7.7% | -1.8% | +0.6% |
| Q1 FY2024 | $3.12 | $2.86 | +9.2% | -1.2% | -3.4% |
CFO since 2020 • 17/20 beats (85%) • last guidance cut Q3 FY2025
| Q4 FY2024 |
| $3.29 |
| $2.86 |
| +15.2% |
| +2.3% |
| +4.2% |
| Q3 FY2024 | $3.59 | $2.91 | +23.4% | -0.3% | -2.6% |
| Q2 FY2024 | $3.38 | $2.78 | +21.7% | +1.1% | +3.6% |
| Q1 FY2023 | $3.13 | $2.80 | +11.9% | -2.7% | -1.5% |
| Q4 FY2023 | $3.23 | $2.82 | +14.6% | -4.5% | -1.9% |