0000106535 2026-05-14 2026-05-14 0000106535 false 8-K 2026-05-14 WEYERHAEUSER CO WA 1-4825 91-0470860 220 Occidental Avenue South Seattle WA 98104-7800 206 539-3000 false false false false Common Stock, par value $1.25 per share WY NYSE false