Bunker Hill Mining Strengthens Executive Team and Achieves Improved ESG Rating in Latest Digbee Assessment

Bunker Hill Mining Corp. (“ Bunker Hill” or the “ Company ”) ( TSX: BNKR | OTCQB: BHLL ) is pleased to announce that Bradley Barnett has been appointed Chief Financial Officer of the Company, effective immediately, and Mark Hayes has been appointed General Counsel, effective August 10, 2026. Mr. Barnett has been serving the Company as Interim Chief Financial Officer and will now assume the role on a permanent basis. Mr. Barnett has played a key role in supporting the Company’s financial operations during a transformative period for Bunker Hill, including the advancement of redevelopment and commissioning activities at the historic Bunker Hill Mine (the “ Bunker Hill Mine ”). His appointment reflects the Company’s board of directors’ (the “ Board ”) confidence in his leadership, financial expertise, and ongoing contribution to the Company as it transitions toward production. “Brad, one of the three founding members of the new management team that arrived in the Silver Valley in 2020 to transform Bunker Hill’s future, is a proven and highly capable mining executive. As Interim Chief Financial Officer, he has demonstrated strong financial leadership, exceptional commercial acumen and the ability to build a superb performance-focused partnership with the operating team,” said Richard Williams, Executive Chairman of Bunker Hill. “We are very pleased to appoint him as Chief Financial Officer on a permanent basis and look forward to his continued contribution as we execute on our production restart and long-term growth strategy.” Bunker Hill is also pleased to announce the appointment of Mark Hayes as General Counsel, effective August 10, 2026. Mr. Hayes joins Bunker Hill with more than a decade of legal and strategic experience focused on the mining, natural resources, and energy sectors. Most recently, he served as head of legal for Nuton, Rio Tinto's innovative copper leaching technology venture, where he advised executive leadership on strategic investments, governance matters, commercial agreements, environmental and regulatory issues, and intellectual property management across a portfolio of mining projects throughout the Americas. Prior to Nuton, Mr. Hayes held several senior legal positions within Rio Tinto's copper and borates businesses, supporting major mining operations and growth initiatives throughout North and South America. His experience includes mergers and acquisitions, project development, environmental permitting, regulatory compliance, commercial negotiations, joint ventures, and corporate governance. Before joining Rio Tinto, Mr. Hayes served as a public lands attorney with the U.S. Department of the Interior and practiced natural resources and environmental law with McAfee & Taft. "Mark's appointment comes at a key time for Bunker Hill as we advance towards commercial production and evolve our long-term growth strategy," said Richard Williams, Executive Chairman of Bunker Hill. "His combination of operational mining experience, transactional expertise, and regulatory knowledge gained through leadership roles at Rio Tinto will be invaluable as we build a modern, responsible, and profitable mining company. We are very excited to welcome Mark to our team." Mr. Hayes added, "Bunker Hill represents one of the most compelling mine restart stories in North America. The opportunity to help guide the Company through this next phase of production and growth, while contributing to the revitalization of one of the world's most historic mining districts, is incredibly exciting. I look forward to working with the management team and Board to support Bunker Hill's cont...