Intimation regarding Schedule of Earnings Call to be held on October 23, 2026.

www.stl.tech October 06, 2026 National Stock Exchange of India Limited BSE Limited Exchange Plaza, 5th Floor, Phiroze Jeejeebhoy Towers, Plot No. C-1, G Block, Dalal Street, Bandra Kurla Complex, Bandra (East) Mumbai - 400 001. Mumbai - 400 051. Scrip ID - STLTECH Scrip Code - 532374 Sub.: Intimation of schedule of Earnings call (investor/ analyst call) under Regulation 30 of the Securities Exchange and Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sir/Madam, We wish to inform you that EARNINGS CALL to discuss the Company's financial results and performance for the quarter and half year ended September 30, 2026, is scheduled as below: Date & time 04.00 pm IST on Friday, October 23, 2026 Webinar Link Registration Link Further details are enclosed herewith. Kindly take this on your record. Thanking you. Yours faithfully, For Sterlite Technologies Limited Mrunal Asawadekar Company Secretary & Compliance Officer Membership No.: A 24346 Encl.: As above Sterlite Technologies Limited Registered o ffice: 4th Floor, Godrej Millennium, Koregaon Road 9, STS 12/1, Pune, Maharashtra- 411 001, India. CIN - L31300PN2000PLC202408 Greetings from STL! We cordially invite you to our Q2 FY27 earnings call. Date: Friday, 23 October 2026 Time: 4.00 pm - 5.00 pm IST You are advised to register for the call via Diamond pass Link Universal Dial-in - +91 22 6280 1488 / +91 22 7115 8869 International Toll Free Singapore – 8001012045 Hong Kong - 800964448 UK – 08081011573 USA – 18667462133 STL’s management will be represented by Ankit Agarwal Ajay Jhanjhari Managing Director CFO STL STL Note: - The financial results will be available on the corporate website earlier that day: https://www.stl.tech/investors.html - In case you wish to participate via audio call, you will receive dial-in numbers after registering at the link mentioned above. - Please note that you can ask questions if you join using the Zoom app. If you join through dial-in numbers, you shall be in a listen-only mode. For further information, please contact: Rahul Darak Sterlite Technologies Ltd. Email: investor@stl.tech 65e5bf88