Trading window for dealing in shares of Hindustan Copper Limited will remain closed for Designated persons and their immediate relatives from 01.10.2026 till 48 hours after the declaration of financial Results of the Company for the Quarter ended 30.09.2026.

No. HCL/SCY/SE/2026 24.09.2026 To, To, BSE Limited National Stock Exchange of India Ltd Phiroze Jeejeebhoy Towers Exchange Plaza, C-1, Block G Dalal Street Bandra-Kurla Complex, Bandra (East) Mumbai 400 001 Mumbai 400 051 BSE Scrip Code: 513599 NSE Symbol: HINDCOPPER Sub: Trading Window Closure for the quarter ended 30.09.2026 Sir / Madam, Pursuant to Clause 7 of the “Code of Fair Disclosure and Code of Conduct to regulate, monitor and report Trading by Designated Person” of Hindustan Copper Ltd read with Clause 4 of Schedule B to SEBI (Prohibition of Insider Trading) Regulations, 2015, it is informed that the Trading Window for dealing in the shares of Hindustan Copper Ltd will remain closed for Designated Persons and their immediate relatives from 01.10.2026 till 48 hours after the declaration of financial results of the Company for the quarter ended 30.09.2026. The date of Board meeting for declaration of financial results of the Company for the quarter ended 30.09.2026 will be intimated in due course. This is for your information and record please. Thanking you, Yours faithfully, (Mritunjay Kumar Dev) Company Secretary & Compliance Officer फोन Tel: 2283-2226 (Hunting), वेब Web: www.hindustancopper.com, ईमेल Email: investors_cs@hindustancopper.com