0001653087 2025-11-06 2025-11-06 0001653087 false 8-K 2025-11-06 Alector, Inc. DE 001-38792 82-2933343 131 Oyster Point Blvd. Suite 600 South San Francisco CA 94080 (415) 231-5660 false false false false Common Stock ALEC NASDAQ false