Quick Answer
Alector, Inc. reported Shares Outstanding of 110.36 million shares for fiscal year 2025.
Alector, Inc. Shares Outstanding — Annual History
| Fiscal Year | Shares Outstanding | YoY Change |
|---|---|---|
| 2025 | 110.36M | +11.4% |
| 2024 | 99.09M | +16.7% |
| 2023 | 84.88M | +2.4% |
| 2022 | 82.90M | +1.1% |
| 2021 | 81.99M | +3.4% |
| 2020 | 79.32M | +14.9% |
| 2019 | 69.05M | +401.7% |
| 2018 | 13.76M | — |
Quarterly Shares Outstanding
| Quarter Ending | Shares Outstanding | YoY | QoQ |
|---|---|---|---|
| September 30, 2025 | 107.45M | +9.7% | +6.2% |
| June 30, 2025 | 101.21M | +4.0% | +1.2% |
| March 31, 2025 | 99.99M | +3.7% | +0.9% |
| December 31, 2024 | 99.09M | +16.7% | +1.2% |
| September 30, 2024 | 97.93M | +16.4% | +0.6% |
| June 30, 2024 | 97.32M | +16.1% | +1.0% |
| March 31, 2024 | 96.38M | +15.6% | +13.6% |
| December 31, 2023 | 84.88M | +2.4% | +0.9% |
- Alector, Inc. showed an increase of +11.4% in Shares Outstanding compared to the prior fiscal year.
- Over the 2018–2025 period, Alector, Inc.’s shares outstanding has grown by 701.8% (from 13.76 million shares to 110.36 million shares).
- The most recent figure is from Alector, Inc.’s fiscal year 2025 report (Form 10-K), filed with the SEC on February 25, 2026.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
Last verified: