Hindustan Petroleum Corporation Ltdhas informed BSE that the meeting of the Board of Directors of the Company is scheduled on 22/10/2026 ,inter alia, to consider and approve Un-audited Financial Results of the Company for the Quarter/ Half Year ended September 30, 2026

tls::lfclt1 .... fclfilz:s lfr111e&iMr® ~~«11-1 a,,@~r.:r (m«r ~ 3lrlf) ~ ~: 11, un:r~~ ~ m, ~, ~- 400 020 Delivering~ Happiness® Hindustan Petroleum Corporation Limited "'-../" (A Govt. of India Enterprise) Regd. Office: 17, Jamshedji Tata Road, Churchgate, Mumbai -400 020 Ref: Co.Secy/RKS/372/2026 October 12, 2026 BSE Limited, Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai – 400 001 Scrip Code: 500104 Sub.: Notice of Board Meeting National Stock Exchange of India Limited Exchange Plaza, 5th Floor, Plot No. C/1, G-Block, Bandra-Kurla Complex, Bandra East, Mumbai – 400 051 Scrip Name: HINDPETRO Dear Sir, In terms of Regulation 29 (1) and (2) and Regulation 50 (1) of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we wish to inform that a Meeting of the Board of Directors of the Company will be held on Thursday, October 22, 2026 to consider inter-alia, the Un-audited Financial Results of the Company for the Quarter/ Half Year ended September 30, 2026. Further to our earlier letter dated September 25, 2026 with regard to closure of Trading Window, it is hereby informed that the Trading Window for dealing in securities of the Company shall remain closed till October 24, 2026 for all 'Insiders' as per the Insider Trading Code of the Company. This Notice is also hosted on the Website of the Company at www.hindustanpetroleum.com. This is for your information and records. Thanking you, Very truly yours, Rakesh Kumar Singh Company Secretary 17, =~TGutt m, ~-400 020 I ~~: 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