Quick Answer
Alto Neuroscience, Inc. reported Shares Outstanding of 31.92 million shares for fiscal year 2025.
Alto Neuroscience, Inc. Shares Outstanding — Annual History
| Fiscal Year | Shares Outstanding | YoY Change |
|---|---|---|
| 2025 | 31.92M | +18.3% |
| 2024 | 26.99M | +604.2% |
| 2023 | 3.83M | — |
Quarterly Shares Outstanding
| Quarter Ending | Shares Outstanding | YoY | QoQ |
|---|---|---|---|
| September 30, 2025 | 27.17M | +0.7% | +0.4% |
| June 30, 2025 | 27.07M | +0.5% | +0.0% |
| March 31, 2025 | 27.07M | +0.7% | +0.3% |
| December 31, 2024 | 26.99M | +604.2% | +0.1% |
| September 30, 2024 | 26.97M | — | +0.1% |
| June 30, 2024 | 26.95M | — | +0.2% |
| March 31, 2024 | 26.88M | — | +601.5% |
| December 31, 2023 | 3.83M | — | — |
- Alto Neuroscience, Inc. showed an increase of +18.3% in Shares Outstanding compared to the prior fiscal year.
- Over the 2023–2025 period, Alto Neuroscience, Inc.’s shares outstanding has grown by 733.0% (from 3.83 million shares to 31.92 million shares).
- The most recent figure is from Alto Neuroscience, Inc.’s fiscal year 2025 report (Form 10-K), filed with the SEC on March 16, 2026.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
Last verified: