• CSPG qualification line commissioned in December 2024
• Now capable of producing ~1mt per day of battery anode material

Westwater Resources, Inc. (NYSE: American: WWR), an energy technology and battery-grade natural graphite company (“Westwater” or the “Company”), announced today that it successfully commissioned the CSPG qualification line at its Kellyton Graphite Processing Plant.

The Kellyton qualification line offers the capability of processing approximately 1 metric ton of CSPG battery anode material each day. The line was completed at the end of 2024 with a successful commissioning trial that produced over 500kg of CSPG.

Westwater developed and optimized its CSPG products over the past several years using the individual pilot lines at each of its equipment suppliers. Kellyton’s new qualification line involved the installation and consolidation of its equipment supplier pilot line components into one continuous line.

John Strickland, Westwater’s Director of Operations, commented, “Our new qualification line offers a faster, more cost-effective means of producing multi-ton samples for our cellmaker and OEM customers. We are using this line to produce pre-production samples as we continue efforts to complete our main production line which, once completed, will be capable of producing 12,500 mt per year.”

Cevat Er, Westwater’s Chief Technology Officer added, “The qualification line is a valuable asset for Westwater. It closely resembles our mass production processes and provides a resource for training our operators and perfecting our manufacturing techniques. We will continue to use the qualification line once the main plant is operational as a tool to develop variants of our materials for new customers - all at production scale.”

About Westwater Resources, Inc.

Westwater Resources is an energy technology company that is focused on developing battery-grade natural graphite. Westwater Resources’ primary project is the Kellyton Graphite Processing Plant that is under construction in east-central Alabama. In addition, Westwater Resource’s Coosa Graphite Deposit is the largest and most advanced natural flake graphite deposit in the contiguous United States — and is located across 41,965 acres (~17,000 hectares) in Coosa County, Alabama. For more information, visit westwaterresources.net.

Cautionary Statement Regarding Forward-Looking Statements

This news release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are subject to risks, uncertainties and assumptions and are identified by words such as “capable or capability,” “optimized,” “continue efforts,” “develop,” and other similar words or phrases. Forward looking statements include, among other things, statements concerning: customer agreements; future sales to existing or new customers, including the types of products included within those sales; the anticipated production volume of the qualification line or either phase of Kellyton Graphite Plant; the construction and operation of the Kellyton Graphite Plant and its qualification line, including their costs and schedules. The Company cautions that there are factors that could cause actual results to differ materially from the forward-looking information that has been provided. The reader is cautioned not to put undue reliance on this forward-looking information, which is not a guarantee of future performance and is subject to a number of uncertainties and other factors, many of which are outside the control of the Company; accordingly, there can be no assurance that such suggested results will be realized. Those uncertainties and other factors are discussed in Westwater’s Annual Report on Form 10-K for the year ended December 31, 2023, and subsequent securities filings, and they could cause actual results to differ materially from management expectations.

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