Mr. Trevor Walker reports

FRONTIER LITHIUM ESTABLISHES EXECUTIVE ADVISORY COUNCIL TO SUPPORT ADVANCEMENT OF THE PAK LITHIUM PROJECT AND GRANTS STOCK OPTIONS

Frontier Lithium Inc. has established an executive advisory council (EAC) as part of its transition toward execution readiness for the PAK lithium project and related strategic initiatives.

The EAC has been formed to provide strategic, technical, financial and industry guidance to the officers of the company, as the company advances its projects in stages toward final investment decision (FID), with the company's proposed mine and mill FID is targeted for 2028. The EAC will support project planning, development sequencing and execution strategy as Frontier progresses through key development milestones. As part of this initiative, the company is pleased to announce the appointment of the following initial individuals to the EAC, both who have extensive experience across mining development, lithium and battery supply chains.

Bruce Turner, PEng

Mr. Turner was recently an adviser to Compania Minera Zafranal (CMZ), a joint venture company advancing the Zafranal project in southern Peru, and to Mitsubishi Materials Corp. for its projects and operations in Chile. His previous roles include executive director of CMZ, president of Minera Escondida Ltda. (BHP's Escondida copper mine) and president of AQM Copper Inc., as well as the project manager for BHP Diamonds Inc. (NWT Diamonds) from 1993 to 1995. During this period at BHP Diamonds, Mr. Turner was instrumental in managing the technical, operational and infrastructure challenges of establishing Canada's first major subarctic diamond mine.

Mr. Turner is a professional engineer, and holds a bachelor of applied science in mining engineering from the University of British Columbia and a doctor of technology (honourary) from the British Columbia Institute of Technology. He has also completed the advanced management course at Harvard Graduate School of Business Administration. Fluent in English and Spanish, Mr. Turner has worked on mining projects in Canada, Chile, Australia, Papua New Guinea and Peru, and brings extensive expertise in open-pit mining and large-scale project development.

Dr. David Deak, PhD

Dr. Deak is a recognized leader in the lithium-to-EV (electric vehicle) value chain. Dr. Deak is an entrepreneur with experience spanning lithium mining, battery materials and supply chain development, renewable energy and storage, and electric vehicles. He is president of Marbex LLC, a battery and critical materials consultancy, and is engaged with a portfolio of initiatives in the energy and critical minerals space.

Dr. Deak was formerly chief technology officer and senior vice-president at Lithium Americas Corp. He held roles at Tesla Inc., Ambri Inc. (an MIT spinout), Lux Research Inc. and Siemens Wind Power. He was educated at the University of Toronto and the University of Oxford, and is based in the San Francisco Bay area.

"As we advance the PAK lithium project exploration toward development, the formation of our executive advisory council brings highly relevant, hard-won experience directly aligned with the challenges ahead," said Trevor Walker, president and chief executive officer of Frontier Lithium. "Bruce and David each bring decades of senior experience delivering large-scale mining projects across multiple jurisdictions, alongside deep, lithium-specific expertise. Their advice is instrumental as we derisk execution, refine our development strategy, and position Frontier Lithium as a cornerstone supplier within Canada's critical minerals and lithium supply chain."

The establishment of the EAC and the announcement of the initial members marks Frontier's transition from project definition to execution readiness. Additional EAC members will be included in due course as part of a deliberate process to further strengthen the EAC's collective expertise. As the company advances toward the FID, the EAC will provide independent guidance on permitting, infrastructure development, financing strategy and downstream integration. This guidance will help satisfy key conditions associated with the FID, including meeting requirements for unlocking subsequent joint venture financing tranches, as the company progresses through its development milestones.

Stock option grant

The company also announces that pursuant to its stock option plan, it has granted an aggregate of 67,000 stock options to certain employees, officers, directors and consultants. Each stock option is exercisable into one common share of the company at a price of 60 cents per common share, expires five year from the date of grant, and vests 50 per cent on the date of issuance and 50 per cent on the one-year anniversary from the date of issuance. The stock options remains subject to approval by the TSX Venture Exchange.

About Frontier Lithium Inc.

Frontier Lithium is a preproduction mining company with an objective to become a strategic and integrated supplier of premium spodumene concentrates, as well as battery-grade lithium salts to the growing electric vehicle and energy storage markets in North America. The company's PAK lithium project maintains the largest land position and resource in a premium lithium mineral district located in Ontario's Great Lakes region.

About the PAK lithium project

The PAK lithium project is a fully integrated critical minerals initiative in Ontario, developing a high-grade, large-scale lithium resource. Operated as a joint venture between Frontier (92.5 per cent) and Mitsubishi Corp. (7.5 per cent), the project is advancing in parallel with a mine and mill, north of Red Lake, Ont., and a downstream lithium conversion facility in Thunder Bay, Ont., which are both key to supporting a secure domestic lithium supply for the clean energy transition. A 2025 mine and mill feasibility study (FS), prepared by DRA Global Ltd., and entitled "National Instrument 43-101 Technical Report FS PAK Lithium Project, Mine and Mill," outlines a 31-year project life with an after-tax net present value of $932-million at a discount rate of 8 per cent and an after-tax internal rate of return of 17.9 per cent.

These results have been disclosed in the company's news release dated May 28, 2025, and the accompanying technical report was filed on SEDAR+ on July 9, 2025.

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