Audio call recording of earnings call held on October 23, 2026

www.stl.tech October 23, 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.: Audio Call Recording of Earnings Call - Financial Results Q2 FY27 – Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sir/Madam, In furtherance of our letter dated October 06, 2026, informing the Exchanges regarding earnings call in respect of the Company’s Q2FY27 results, we wish to inform that the said earnings call was held on October 23, 2026. The audio recording of the earnings call has been hosted on the website of the Company and the same is available under the tab ‘FINANCIAL RESULTS – QUARTER 2 - INVESTOR EARNINGS CALL RECORDING’ available at https://stl.tech/download/. Kindly take this on your record. Thanking you. Yours faithfully, For Sterlite Technologies Limited Mrunal Asawadekar Company Secretary & Compliance Officer Membership No.: A 24346 Sterlite Technologies Limited R egistered office: 4th Floor, Godrej Millennium, Koregaon Road 9, STS 12/1, Pune, Maharashtra- 411 001, India. CIN - L31300PN2000PLC202408