Intimation of ESG rating

www.stl.tech September 01, 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 ESG Rating Dear Sir/ Madam, Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we wish to inform you that Crisil ESG Ratings & Analytics Ltd, a SEBI registered Category-1 ESG Rating Provider has on August 31, 2026, assigned an ESG Rating of 59. This rating reflects the Company’s performance on Environmental, Social and Governance parameters as assessed by the rating agency. The link for the rating as published by Crisil ESG Ratings & Analytics Ltd: https://www.crisilesg.com/en/home/esg-ratings.html Please note that the Company has not engaged Crisil ESG Ratings & Analytics Ltd for ESG Rating and it has independently prepared the report based on data available in public domain. This is also being made available on the website of the Company. Kindly take the above on record. Thanking you. Yours faithfully, For Sterlite Technologies Limited Mrunal Asawadekar Company Secretary & Compliance Officer Membership No.: ACS 24346 Sterlite Technologies Limited Regist ered office: 4th Floor, Godrej Millennium, Koregaon Road 9, STS 12/1, Pune, Maharashtra- 411 001, India. CIN - L31300PN2000PLC202408