Mr. Jason Gigliotti reports

SIENNA ACQUIRES THE DISTRICT SCALE 50,440 ACRE "ATOMIC URANIUM PROJECT" IN THE ATHABASCA BASIN OF SASKATCHEWAN

Sienna Resources Inc. has acquired the new district-size Atomic uranium project in the Athabasca basin of Saskatchewan. The Atomic uranium project consists of 50,440 contiguous acres bordering Orano and CanAlaska Uranium Ltd.

Jason Gigliotti, president of Sienna, states: "Sienna has taken a swift entry into the uranium space. This new Atomic uranium project is a district-size project in the top uranium address on Earth, the Athabasca basin. This now gives Sienna shareholders exposure to three separate uranium projects. Management is currently formulating plans to commence operations on these new uranium projects. Sienna is coming into a very robust news flow cycle. Management's goal is to build shareholder value by acquiring and working on projects with the highest potential in the most mining-friendly jurisdictions. We plan to be very active in the uranium and lithium space, and have the cash on hand to execute this game plan."

Recently, Sienna (Jan. 17, 2024) acquired the 10,845-contiguous-acre Dragon uranium project bordering Cameco Corp. in the Athabasca basin of Saskatchewan and also (Jan. 23, 2024) the 10,357-acre Uranium Town project bordering Denison Mines Corp. in the Athabasca basin of Saskatchewan.

The Athabasca basin is home to the highest-grade uranium deposits in the world, which includes the highest-grade uranium mine in the world owned by Cameco. In 2021, the Fraser Institute ranked Saskatchewan as No. 1 in Canada, the second-best jurisdiction globally for mining. Sienna management cautions that past results or discoveries on properties in proximity to Sienna may not necessarily be indicative of the presence of mineralization on the company's properties.

Sienna also has multiple lithium projects in Nevada. Recently, Sienna's direct neighbour in Elko county, Nevada, Surge Battery Metals, announced the highest-grade lithium clay resource in the United States. In Clayton Valley, Nevada, Sienna is located in the deepest section of the only producing brine project in the U.S., Albemarle's Silver Peak deposit, and also the same brine section where SLB Corp. (formerly known as Schlumberger) has spent over $100-million for its direct lithium extraction process.

Sienna plans to use the marketing budget in the coming weeks that was announced Oct. 13, 2023.

About Sienna Resources Inc.

Sienna has recently acquired the 10,357-acre Uranium Town project bordering Denison Mines, the 10,845-contiguous-acre Dragon uranium project bordering Cameco and the 55,440-acre Atomic uranium project in the world-renowned Athabasca basin of Saskatchewan. Also, Sienna recently expanded the Elko lithium project in Elko county, Nevada. This project consists of approximately 1,840 contiguous acres directly bordering Surge Battery Metals' Nevada North lithium project in Elko county, Nevada, which announced the highest-grade lithium deposit in the U.S. Sienna is also one of the larger landholders in Clayton Valley, Nevada. Sienna's Clayton Valley projects include the Blue Clay lithium project, the Silver Peak South project and the Clayton Valley Deep Basin lithium project. Clayton Valley is home to the only lithium production in North America, being Albemarle Corp.'s Silver Peak deposit. This project is also near Tesla Motors Inc.'s gigafactory in Nevada. On March 18, 2021, Schlumberger New Energy Venture announced the development of a lithium extraction pilot plant through its new venture, NeoLith Energy, in a strategic partnership with Pure Energy. The deployment of the pilot plant will be in Clayton Valley, Nevada, U.S. The NeoLith Energy sustainable approach uses a differentiated direct lithium extraction (DLE) process to enable the production of high-purity, battery-grade lithium material while reducing the production time from over a year to weeks. Results from this pilot plant are expected in 2024 and could have a significant impact on the brine prospects within Clayton Valley Nevada, as Sienna is located in the deepest section of this brine deposit.

This project was acquired via staking.

Qualified person

Frank Bain, PGeo, a qualified person as defined by National Instrument 43-101, has reviewed and approved the scientific and technical disclosure contained within this news release.

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