0001653087 2026-08-06 2026-08-06 false 0001653087 8-K 2026-08-06 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