CSN Mineração buys back 3,963,200 common shares via JPM

CSN Mineração disclosed spot purchases of common shares in a buyback, lifting its treasury position to 64,516,000 shares from 60,552,800. Total acquired: 3,963,200 shares for R$ 22.88 million, implying an average price of R$ 5.7719 per share. 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. CSN Mineracao SA published the original content used to generate this news brief on October 13, 2026, and is solely responsible for the information contained therein. (C)