Quick Answer
Alector, Inc. reported Operating Income of -$156.01 million for fiscal year 2025.
Alector, Inc. Operating Income — Annual History
| Fiscal Year | Operating Income | YoY Change |
|---|---|---|
| 2025 | -$156.01M | -7.6% |
| 2024 | -$145.00M | +4.4% |
| 2023 | -$151.74M | -10.1% |
| 2022 | -$137.83M | -268.9% |
| 2021 | -$37.36M | +80.9% |
| 2020 | -$195.17M | -70.6% |
| 2019 | -$114.40M | -99.7% |
| 2018 | -$57.29M | -75.3% |
| 2017 | -$32.68M | — |
Quarterly Operating Income
| Quarter Ending | Operating Income | YoY | QoQ |
|---|---|---|---|
| September 30, 2025 | -$37.61M | +22.4% | -10.2% |
| June 30, 2025 | -$34.14M | +25.1% | +23.6% |
| March 31, 2025 | -$44.70M | -2.3% | +7.7% |
| September 30, 2024 | -$48.43M | +4.2% | -6.2% |
| June 30, 2024 | -$45.61M | -1170.7% | -4.3% |
| March 31, 2024 | -$43.71M | +12.8% | +13.6% |
| September 30, 2023 | -$50.58M | -5.9% | -1309.4% |
| June 30, 2023 | -$3.59M | -137.9% | +92.8% |
- Alector, Inc. showed a decrease of -7.6% in Operating Income compared to the prior fiscal year.
- Over the 2017–2025 period, Alector, Inc.’s operating income has declined by 377.4% (from -$32.68 million to -$156.01 million).
- 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.
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