• Regulus completed a first-phase collaboration milestone with Coimolache: a third-party mineral resource estimate for an integrated Coimolache Sulphides–AntaKori copper-gold project.
• SRK Peru delivered an internal, unconstrained estimate that removes property boundaries; the report is not expected to be made public.
• Any decision to proceed to a preliminary economic assessment remains subject to mutual agreement; no timeline was provided.
• AntaKori’s stated standalone resource totals 250 million tonnes indicated at 0.48% Cu, 0.29 g/t Au; 267 million tonnes inferred at 0.41% Cu, 0.26 g/t Au.
• Drilling at AntaKori totals 71,762 m from 1997-2022; 31,666 m was added since the 2019 resource estimate.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Regulus Resources Inc. published the original content used to generate this news brief via GlobeNewswire (Ref. ID: 202606300700PRIMZONECNPR____9754381) on June 30, 2026, and is solely responsible for the information contained therein.