SOUTH SAN FRANCISCO, Calif.--(BUSINESS WIRE)--Spruce Biosciences, Inc. (Nasdaq: SPRB), a late-stage biopharmaceutical company focused on developing and commercializing novel therapies for neurological disorders with significant unmet medical need, today announced that it has been added as a member of the Russell 3000® Index, effective with the opening of U.S. equity markets today, in connection with the 2026 Russell U.S. Indexes Reconstitution. The Russell 3000® Index measures the performance o