0001370053 2026-09-21 2026-09-21 false 0001370053 8-K 2026-09-21 ANAPTYSBIO, INC. DE 001-37985 20-3828755 10770 Wateridge Circle, Suite 210 San Diego CA 92121 858 362-6295 N/A false false false false Common stock, par value $0.001 per share ANAB NASDAQ false