Building Thacker Pass: May 2026 Construction Update

Lithium Americas is building Thacker Pass located in Humboldt County in northern Nevada (“Thacker Pass”). Phase 1 of Thacker Pass is designed for nominal production capacity of 40,000 tonnes per year of battery-quality lithium carbonate, and mechanical completion is targeted for late-2027. Thacker Pass hosts the largest known measured lithium resource (Measured and Indicated) and reserve (Proven and Probable) in the world and is owned by a joint venture between Lithium Americas (holding a 62% interest), and General Motors Holdings LLC (“GM”) (holding a 38% interest). Project financing for Phase 1 of Thacker Pass includes a $2.23 billion loan from the U.S. Department of Energy (the “DOE Loan”) and strategic investments from GM and Orion Resource Partners LP. Construction of Phase 1 of Thacker Pass is expected to create nearly 2,000 direct jobs, including 1,800 skilled contractors. Lithium Americas’ shares are listed on the Toronto Stock Exchange and New York Stock Exchange under the symbol LAC. To learn more, visit www.lithiumamericas.com or follow @LithiumAmericas on social media.