Adelayde signs JV deal with Sienna, Cruz Battery

Mr. James Nelson reports ADELAYDE EXPLORATION ENTERS INTO JOINT VENTURE AGREEMENT TO EXPLORE THE DEEP BASIN LITHIUM BRINE POTENTIAL IN CLAYTON VALLEY, NEVADA Adelayde Exploration Inc. has entered into a joint venture agreement with Sienna Resources Inc. and Cruz Battery Metals Corp. 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 surrounded by SLB (formerly Schlumberger) and Pure Energy Minerals' lithium deposit. Clayton Valley, Nevada, is the only long-established producing lithium brine basin in the United States, home to Albemarle's Silver Peak lithium brine mine, which extracts lithium from subsurface brines. It has been the sole U.S. producing lithium brine operation since the 1960s. James Nelson, president of Adelayde, stated: "Lithium prices are currently at two-year highs and are now up well over 150 per cent since June, 2025, according to [the Trading Economics website]. With the recent resurgence of investor attention back into the lithium sector, management feels this is an opportune time to explore the deep basin lithium brine potential within Clayton Valley, Nevada. The main reason the JV was formed was to create one large block in the centre of the Clayton Valley lithium brine basin to formulate a drill program to test the deepest part with a shared cost and benefit to the JV participants. The company is well financed to execute its planned exploration and work programs, and we look forward to a very active start to 2026." On June 17, 2022, Adelayde announced a mineral resource estimate on the 1,136-acre McGee lithium clay deposit of 320 million tonnes at 803 parts per million lithium for 1,369,000 indicated tonnes of lithium carbonate equivalent (LCE) and 157 million tonnes at 865 ppm Li for 723,000 inferred tonnes of LCE, directly bordering SLB and Century Lithium Corp. Adelayde recently announced (Jan. 22, 2026) that it has joined the National Defense Industrial Association (NDIA) in support of the advancement of its critical and strategic mineral portfolio. The NDIA is a U.S.-based organization promoting national security by connecting industry and government. Key terms of the joint venture agreement This binding letter agreement sets out the principal terms of a contractual joint venture among Adelayde Exploration, Sienna Resources and Cruz Battery Metals, whereby each party has agreed to share in the costs, expenses, liabilities and benefits of the joint exploration and development of the mineral claims that are prospective for lithium: Initial contributions and profit sharing: Each party, through its respective affiliates, will continue to hold legal title to its respective mineral claims that comprise the project as set out in Schedule A but agrees to hold such legal title for the benefit of the joint venture, with each party holding a one-third beneficial interest in each mineral claim until termination of or exit from the joint venture in accordance with the terms hereof. Each party agrees to work and collaborate together to advance the exploration and development of the project. If the parties unanimously agree on any exploration and development programs, each party will contribute one-third of such costs and will be entitled to one-third of any benefits. Similarly, each party will be responsible for one-third of any liabilities of the project. Each party will have the right to exit or terminate its participation in the joint venture with 30 days of written notice to the other parties, following which such exiting party will no longer be entitled to any benefit, cost, expense or liability of the joint venture from that date going forward. Following the end of the notice period, the mineral claims of such exiting party as set out in Schedule A will be deemed to be removed from the joint venture. Definitive agreement: Following the creation of the joint venture by signing this agreement, the parties may elect to further develop and memorialize the terms of the joint venture by entering into a definitive agreement and structuring the joint venture through a special-purpose vehicle and transferring ownership of the mineral claims to the JV entity (whether in the form of a unanimous shareholders agreement, limited partnership agreement, joint venture agreement, co-ownership agreement or some other form of agreement). The definitive agreements shall include the terms summarized in this agreement and such other representations, warranties, conditions, covenants, indemnities and other terms as are customary for transactions of this nature and not inconsistent with this agreement. Qualified person for mining disclosure The technical contents of this release were reviewed and approved by Frank Bain, PGeo, a director of the company and qualified person as defined by National Instrument 43-101. The technical report and mineral resource estimate for the McGee lithium clay deposit have been prepared by Derek Loveday, PGeo, and Mariea Kartick, PGeo, of Stantec Consulting Services Ltd. in conformity with CIM (Canadian Institute of Mining, Metallurgy and Petroleum) estimation of mineral resource and mineral reserves best practices guidelines and are reported in accordance with the Canadian Securities Administrators' NI 43-101, announced on June 17, 2022. About Adelayde Exploration Inc. Adelayde's projects include three lithium projects in Clayton Valley, Nevada: the 1,136-acre McGee lithium clay deposit, which has a mineral resource estimate of 320 million tonnes at 803 ppm Li for 1,369,000 indicated tonnes of LCE and 157 million tonnes at 865 ppm Li for 723,000 inferred tonnes of LCE, directly bordering SLB and Century Lithium; the 280-acre Elon lithium brine project, which has access to some of the deepest parts of the only lithium brine basin in production in North America; and the 124-acre Green Clay lithium project. The company also holds the 248-acre Clayton Ridge gold project in Esmeralda county, Nevada, as well as the 4,722-acre George Lake South antimony project and the 9,780-acre Sisson North tungsten project, both located in New Brunswick. We seek Safe Harbor.