Southern Silver intersects 35 meters grading 399 g/t silver-equivalent at Cerro Las Minitas project in Mexico

• Southern Silver reported early definition drilling results at Cerro Las Minitas in Durango, Mexico, targeting the Puro Corazón zone.
• Hole 26CLM-225 intersected 35.0 meters grading 188 g/t silver, 4.9% lead, 4.6% zinc, or 399 g/t silver equivalent.
• Additional intercepts included 5.2 meters at 277 g/t silver in hole 26CLM-226, 5.3 meters at 493 g/t silver in 26CLM-227.
• The 14,000-meter program started in June 2026 to upgrade resource classification across a roughly 200-meter strike by 300-meter down-dip area.
• Drilling remained ongoing with eight of 30 planned holes completed, one in progress, three pending assays.

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. Southern Silver Exploration Corp. published the original content used to generate this news brief via Newsfile (Ref. ID: 202609210730NEWSFILECNPR____20260921_315107_1) on September 21, 2026, and is solely responsible for the information contained therein.