Quick Answer
Alector, Inc. reported Research And Development Expense of $123.07 million for the year ending 2025.
- Alector, Inc. showed a decrease of -33.8% in Research And Development Expense from 2024 to 2025.
- This data is from Alector, Inc.'s annual report (Form 10-K), filed with the SEC on February 25, 2026.
- XBRL data for this metric is available from 2017 to 2025 (9 years of filings). Earlier data may not exist in machine-readable XBRL format as companies adopted electronic filing at different times.
- Over the full 9 years of available data (2017 to 2025), Alector, Inc.'s Research And Development Expense has grown by 311.4%.
- Historical annual values: Fiscal year 2025: $123.07 million | Fiscal year 2024: $185.94 million | Fiscal year 2023: $192.12 million | Fiscal year 2022: $210.42 million | Fiscal year 2021: $189.41 million | Fiscal year 2020: $156.87 million | Fiscal year 2019: $100.53 million | Fiscal year 2018: $73.03 million | Fiscal year 2017: $29.91 million.
- Data sourced from SEC EDGAR public filings as of June 20, 2026.
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