Vancouver, British Columbia--(Newsfile Corp. - January 28, 2026) - Sienna Resources Inc. (TSXV: SIEN) (OTCID: SNNAF) (WKN: A418KR) (the "Company" or "Sienna") is pleased to announce that it has entered into a joint venture agreement ("JV") with Cruz Battery Metals Corp. ("Cruz") and Adelayde Exploration Inc. ("Adelayde") to explore the deep basin lithium brine potential in Clayton Valley, Nevada. The 115 mineral claims comprising the 2,300-acre JV land package are all located within, and completely surroun ...