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Vancouver, British Columbia--(Newsfile Corp. - March 12, 2026) - Sienna Resources Inc. (TSXV: SIEN) (FSE: A418KR), (the "Company" or "Sienna") is pleased to announce the completion of a non-brokered flow-through private placement (the "Financing") to raise $270,000 at a price of $0.15 per flow-through share (each, a "FT Share"). No warrants will be issued, and no finders' fees will be paid.

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…