Trading Window

No. GMDC/CS/ BSE/NSE/016/2026 Dt. 29/06/2026 To, To, National Stock Exchange of India, Bombay Stock Exchange Ltd. Exchange Plaza, C-1, Block G, 25th Floor, P.J. Towers Bandra Kurla Complex Dalal Street Bandra (East) , Mumbai – 400 051 Fort, Mumbai-400 001 Code : GMDCLTD Code : 532181 Dear Sirs, Subject : Intimation of Closure of Trading Window in terms of SEBI (Prohibition of Insider Trading) Regulations, 2015 as amended Pursuant to SEBI (Prohibition of Insider Trading) Regulations, 2015 as amended and Company’s Code of Conduct to regulate, monitor and report Trading by Designated Persons, kindly note that the Trading Window for sale / purchase / dealing in the Equity Shares of the Company will remain closed from 1st July, 2026 for all concerned persons and will end 48 hours after the declaration of unaudited quarterly financial results of the company for the quarter ending on 30th June, 2026. No trading in the shares of the company can be done during this closure period. The said update will also be available on the Company’s website www.gmdcltd.com You are requested to take note of the same. Thanking you, Yours faithfully, For Gujarat Mineral Development Corporation Limited, Joel Evans Company Secretary. Gujarat Mineral Development Corporation Limited (A Government of Gujarat Enterprise) CIN : L14100GJ1963SGC001206 “Khanij Bhavan”, 132 Ft. Ring Road, Near University Ground, Vastrapur, Ahmedabad-52 Phone : 27913200/3501 Email: cs.co@gmdcltd.com Website: www.gmdcltd.com