Graphite One Secures Key Engineering Contract and Advances Ohio Active Anode Materials Facility Toward 25,000 Tonnes of Synthetic Graphite Capacity

Vancouver, British Columbia – June 22, 2026 – Graphite One Inc. (TSXV: GPH) (OTCQX: GPHOF) (“Graphite One” or the “Company”) today announced two significant milestones for its planned Active Anode Materials (“AAM”) manufacturing facility in Conneaut, Ohio (the “Ohio Facility”): (1) execution of an engineering contract with a leading anode production facility engineering firm, and (2) continued advancement of the Company’s strategically located Conneaut manufacturing site.

Together, these milestones move the project into detailed execution and support Graphite One’s objective of establishing 25,000 tonnes per year of domestic synthetic graphite capacity by Q4 2028, positioning the Company as a potential cornerstone supplier to the rapidly growing North American battery materials market.