Sumac (stylized as SUMAC) is an American/Canadian post-metal supergroup that formed in 2014. It features the Vancouver, British Columbia-based Nick Yacyshyn (Baptists), Seattle, Washington-based Brian Cook (Russian Circles, ex-These Arms Are Snakes, ex-Botch) and Vashon, Washington-based Aaron Turner (Mamiffer, Old Man Gloom, ex-Isis). Sumac released its debut album The Deal through Profound Lore Records in 2015.