0001840233 2026-05-12 2026-05-12 0001840233 false 8-K 2026-05-12 Xilio Therapeutics, Inc. DE 001-40925 85-1623397 828 Winter Street Suite 300 Waltham MA 02451 (857) 524-2466 false false false false Common stock, par value $0.0001 per share XLO NASDAQ true false