Patriot Battery Metals Announces Board Changes

Press Release

July 30, 2025

Patriot Battery Metals Inc. (the “Company” or “Patriot”) (TSX: PMET) (ASX: PMT) (OTCQX: PMETF) (FSE: R9GA) is pleased to announce the appointment of Mrs. Aline Côté  to its board of directors, effective immediately. Mrs. Côté stands as an independent director.

Mrs. Côté is a seasoned mining executive with over 27 years of international experience spanning exploration, technical services, and operational leadership. She began her career at Noranda Inc. and held progressively senior roles at Xstrata plc and Glencore International AG. In 2014, she was appointed Head of Zinc Mining Technical Services at Glencore, a role she held until 2019, when she became Glencore’s first female Industrial Lead, heading the Company’s global Zinc and Lead industrial assets.

In 2019, she joined the board of directors of Kazzinc and in 2020, she joined the board of Trevali Mining Corporation, where she served as Chair of the Technical Committee.

Mrs. Côté holds a B.Sc. in Geology and an MBA from the Université du Québec, and completed postgraduate training at Laurentian University.

She brings to the Board deep operational expertise, strategic leadership, and firsthand experience managing large-scale, capital-intensive mining operations across multiple jurisdictions.

Pierre Boivin, Chair of the Board of Directors, comments: “We are very pleased to welcome Aline to the Patriot Battery Metals team as an independent director. Aline is a highly respected executive in the mining sector and a strong addition to our Board. Based in Québec and widely recognized across the global mining industry, she brings an exceptional combination of technical depth, operational leadership, and strategic perspective. Her appointment strengthens our Board’s industry credibility and reinforces our alignment with Québec’s growing role in the critical minerals value chain.”

About Patriot Battery Metals Inc.

Patriot Battery Metals Inc. is a hard-rock lithium exploration company focused on advancing its district-scale 100%-owned Shaakichiuwaanaan Property (formerly known as Corvette) located in the Eeyou Istchee James Bay region of Quebec, Canada, which is accessible year-round by all-season road and is proximal to regional powerline infrastructure. The Project hosts the world’s largest1 pollucite-hosted caesium pegmatite Mineral Resource2 at the Rigel and Vega zones with 0.69 Mt at 4.40% Cs2O, Indicated, and 1.70 Mt at 2.40% Cs2O, Inferred. Additionally, the Project hosts a Consolidated Mineral Resource, which includes the Rigel and Vega caesium zones, totalling 108.0 Mt at 1.40% Li2O, 0.11% Cs2O, 166 ppm Ta2O5, and 66 ppm Ga, Indicated, and 33.4 Mt at 1.33% Li2O, 0.21% Cs2O, 155 ppm Ta2O5, and 65 ppm Ga, Inferred, and ranks as the largest lithium pegmatite resource in the Americas, and the 8th largest in the world.

A Preliminary Economic Assessment (“PEA”) was announced for the CV5 Pegmatite August 21, 2024, and highlights it as a potential North American lithium raw materials powerhouse. The PEA outlines the potential for a competitive and globally significant high-grade lithium project targeting up to ~800 ktpa spodumene concentrate using a simple Dense Media Separation (“DMS) only process flowsheet.

1 Determination based on Mineral Resource data, sourced through July 11, 2025, from corporate disclosure.

2The Consolidated MRE cut-off grade is variable depending on the mining method and pegmatite (0.40% Li2O open-pit, 0.60% Li2O underground CV5, and 0.70% Li2O underground CV13). A grade constraint of 0.50% Cs2O was used to model the Rigel and Vega caesium zones, which are entirely within the CV13 Pegmatite’s open-pit mining shape. The Effective Date of the MREs is June 20, 2025 (through drill hole CV24-787). Mineral Resources are not Mineral or Ore Reserves as they do not have demonstrated economic viability.

For further information, please contact us at info@patriotbatterymetals.com or by calling +1 (604) 279-8709, or visit www.patriotbatterymetals.com. Please also refer to the Company’s continuous disclosure filings, available under its profile at www.sedarplus.ca and www.asx.com.au, for available exploration data.

This news release has been approved by

“KEN BRINSDEN”

Kenneth Brinsden, President, CEO, & Managing Director

Olivier Caza-Lapointe
Head, Investor Relations
T: +1 (514) 913-5264
E: ocazalapointe@patriotbatterymetals.com

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