CALGARY, Alberta– September 30, 2025 — E3 LITHIUM LTD. (TSXV:ETL) (OTCQX:EEMMF), “E3 Lithium” or the “Company,” a leader in Canadian lithium has entered into an Asset Purchase and Sale Agreement (the “Agreement”) with an arm’s length private company (the “Purchaser”), to sell the Company’s non-core, Saskatchewan based, Estevan Lithium District assets (the “Estevan Assets”) for a total cash consideration of US$4.296 million (C$6.0 million at current USD/CAD exchange rates) (the “Transaction”).

While E3 sees the long-term development potential of the Estevan lithium district, the Company is prioritizing the commercial development of its Clearwater Project, located in Alberta’s Bashaw District. Proceeds from the Transaction will further enhance the Company’s financial position and support the ongoing advancement of the Clearwater Project.

“E3 Lithium remains focused on developing Canada’s first fully integrated lithium production facility – our Clearwater Project,” said Chris Doornbos, President and CEO of E3 Lithium. “By monetizing these non-core lithium assets in Saskatchewan, we are unlocking value that bolsters our financial position and supports our Clearwater Project’s active development that will help us reach a final investment decision.”

The Transaction is expected to close in late Q4 2025, and is subject to customary closing conditions, including, but not limited to, receipt of all third party consents as well as satisfactory regulatory, surface impediment and environmental due diligence being completed by the Purchaser.

ON BEHALF OF THE BOARD OF DIRECTORS
Chris Doornbos, President, CEO & Chair
E3 Lithium Ltd.

About E3 Lithium

E3 Lithium is a development company with a total of 21.2 million tonnes of lithium carbonate equivalent (LCE) Measured and Indicated¹ as well as 0.3 Mt LCE Inferred mineral resources² in Alberta and 2.5 Mt LCE Inferred mineral resources³ in Saskatchewan. The Clearwater Pre-Feasibility Study outlined a 1.13 Mt LCE proven and probable mineral reserve with a pre-tax NPV(8%) of USD 5.2 Billion with a 29.2% IRR and an after-tax NPV(8%) of USD 3.7 Billion with a 24.6% IRR¹.

1. The Clearwater Project NI 43-101 Pre-Feasibility Study, effective June 20, 2024, is available on the E3 Lithium’s website (www.e3lithium.ca/technical-reports/) and SEDAR+ (www.sedarplus.ca).
2. The mineral resource NI 43-101 Technical Report for the Garrington District Lithium Resource Estimate, effective June 25, 2025, identified 5.0 Mt LCE (measured and indicated) and 0.3 Mt LCE (inferred) and will be available on the E3 Lithium’s website (www.e3lithium.ca/technical-reports/) and SEDAR+ (www.sedarplus.ca) within 45 days of this news release.
3. The mineral resource NI 43-101 Technical Report for the Estevan Lithium District, effective May 23, 2024, identified 2.5 Mt LCE (inferred) and is available on the E3 Lithium’s website (www.e3lithium.ca/technical-reports/) and SEDAR+ (www.sedarplus.ca).

Unless otherwise indicated, Kevin Carroll, P. Eng., Chief Development Officer and a Qualified Person under National Instrument 43-101, has reviewed and is responsible for the technical information contained on this news release.

Forward-Looking and Cautionary Statements

This news release includes certain forward-looking statements as well as management’s objectives, strategies, beliefs and intentions or forward-looking information within the meaning of applicable securities laws. Forward-looking statements are frequently identified by such words as “believe”, “may”, “will”, “plan”, “expect”, “anticipate”, “estimate”, “intend”, “project”, “potential”, “subject to” and similar words referring to future events and results. Forward-looking statements are based on the current opinions, expectations, estimates and assumptions of management in light of its experience and perception of historical trends, but such statements are not guarantees of future performance. In particular, this news release contains forward-looking information relating to: the expected timing for closing of the Transaction and anticipated benefits thereof. In preparing the forward-looking information in this news release, the Company has applied several material assumptions, including, but not limited to, that it will receive all third party consents and regulatory and environmental approvals required to complete the Transaction and that the Purchaser will receive approval of it’s Board of Directors on satisfaction of its due diligence investigations; the exchange rates for the U.S. and Canadian currencies will be consistent with the Company’s expectations; that the current exploration, development, demonstration, testing, production, environmental and other objectives concerning the Clearwater Project can be achieved and that its other corporate activities will proceed as expected; that the current price and demand for lithium will be sustained or will improve; that general business and economic conditions will not change in a materially adverse manner and that all conditions precedent to the closing of the Transaction will be satisfied in a timely manner and on acceptable terms; and the continuity of the price of lithium.

All forward-looking information is inherently uncertain and subject to a variety of assumptions, risks and uncertainties, including the speculative nature of mineral exploration, development, and production, fluctuating commodity prices, the effectiveness and feasibility of emerging lithium extraction technologies which have not yet been tested or proven on a commercial scale or on the Company’s brine, risks related to the availability of financing on commercially reasonable terms and the expected use of proceeds; operations and contractual obligations; changes in estimated mineral reserves or mineral resources; future prices of lithium and other metals; availability of third party contractors; availability of equipment; failure of equipment to operate as anticipated; accidents, effects of weather and other natural phenomena and other risks associated with the mineral exploration industry; the Company’s lack of operating revenues; currency fluctuations; risks related to dependence on key personnel; estimates used in financial statements proving to be incorrect; competitive risks and the availability of financing, as described in more detail in our recent securities filings available under the Company’s profile on SEDAR+ (www.sedarplus.ca). Actual events or results may differ materially from those projected in the forward-looking statements and we caution against placing undue reliance thereon. We assume no obligation to revise or update these forward-looking statements except as required by applicable law.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.