• PNG Mining Minister received extension documentation for Simberi Mining Lease
• PNG Internal Revenue Commission to revoke and reissue revised tax assessments
• St Barbara aligned with Minister's comments on maintaining good standing and compliance

St Barbara Limited (ASX:SBM) has provided an update on its engagements with the Papua New Guinea (PNG) Government. The company has confirmed that the Minister of Mining, the Honourable Mr Rainbo Paita, received the formal extension documentation, together with the recommendation and briefing materials, from the Mineral Resources Authority (MRA) on 3 September 2025. This follows the decision by the Mining Advisory Committee (MAC) on 10 August 2025 to recommend to the Minister the grant of an extension of the Simberi Mining Lease 136 (Simberi ML) until 2038. The PNG Internal Revenue Commission (IRC) Deputy Commissioner of Taxation has advised that the IRC will revoke the previous tax assessments issued in December 2024 and reissue a revised tax reassessment as early as 19 September 2025. St Barbara and its subsidiary Simberi Gold Company Limited (SGCL) are aligned with the Minister's comments regarding the importance of tenement holders maintaining good standing and operating in accordance with PNG laws. SGCL has operated the Simberi Mine since 2012, with over 90% of the workforce made up of locals and PNG nationals, contributing substantial royalties and broader direct and indirect benefits into PNG under strict governance standards. SGCL is pleased to reconfirm it is in full compliance with all tax obligations and committed to working to resolve the matter with the IRC.