General Updates

cls::l~t1i:t a,'fqn~r.:r ~fi:lzs lfF111FiNiiffl ~~•.=t Happiness® Hindustan Petroleum Corporation Limited (A Govt. of India Enterprise) Regd. Office : 17, Jamshedji Tata Road, Churchgate, Mumbai -400 020 Ref.: Co.Secy./RKS/340/2026 September 18, 2026 BSE Limited, Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai – 400 001 Scrip Code: 500104 Sub.: Disclosure under Regulation National Stock Exchange of India Limited Exchange Plaza, 5th Floor, 30 of the SEBI (Listing Plot No. C/1, G-Block, Obligations and Disclosure Bandra-Kurla Complex, Bandra East, Requirements) Regulations, Mumbai – 400 051 Scrip Name: HINDPETRO 2015 – ESG Rating Dear Sir / Madam, Pursuant to Regulation 30 read with Schedule III and other applicable provisions of the of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we wish to inform you that Niche Ninety Nine Capability and Certifications (OPC) Private Limited have assigned the Environmental, Social and Governance (ESG) rating of “55” to the Company. The link for the rating as published by Niche Ninety Nine Capability and Certifications (OPC) Private Limited: https://niche99.com/niche99-esg-ratings Please note that the Company has not engaged Niche Ninety Nine Capability and Certifications (OPC) Private Limited for ESG Rating and that it has independently prepared the report. This is for your information and records. Thanking you, Very truly yours, Rakesh Kumar Singh Company Secretary 17, wr~TG'ift cTcT m, ~ -400 020 I ~'ITT"r: 2286 3900 17, Jamshedji Tata Road, Churchgate, Mumbai -400 020 I Phone: 2286 3900 email: corphqo@hpcl.in I website: www.hindustanpetroleum.com I CIN: L23201MH1952GOI008858