Amended Code of practices & procedures for Fair Disclosure of UPSI and conduct for Regulating Monitoring and Reporting of Trading in Securities of POWERGRID.

05th August, 2026 To To The General Manager (Listing), The General Manager (Listing), National Stock Exchange of India Limited, BSE Limited, Exchange Plaza, C 1/G Block, Phiroze Jeejeebhoy Towers, Bandra-Kurla Complex, Dalal Street, Mumbai. Bandra (East), Mumbai. Reference: NSE-SCRIP ID: POWERGRID; BSE Scrip Code: 532898 EQ – ISIN: INE752E01010 Sub.: Amended ‘Code of Practices & Procedures for Fair Disclosure of Unpublished Price Sensitive Information and Conduct for Regulating, Monitoring & Reporting of Trading in Securities of Power Grid Corporation of India Limited’. Dear Sir, This is to inform that Board of Directors of POWERGRID, in its meeting held today i.e. Wednesday, 05th August, 2026, has approved the proposal regarding adoption of amended ‘Code of Practices & Procedures for Fair Disclosure of Unpublished Price Sensitive Information and Conduct for Regulating, Monitoring & Reporting of Trading in Securities of Power Grid Corporation of India Limited’ (‘Code’). The Code is being made available on the website of the Company at www.powergrid.in. Thanking You, Yours faithfully, (Anjana Luthra) Company Secretary & Compliance Officer के(cid:574)ीय काया(cid:330)लय: "सौदािमनी", (cid:600)ॉट नंबर 2, से(cid:387)र -29, गु(cid:348)(cid:356)ाम -122001, (ह(cid:303)रयाणा) दूरभाष: 0124-2822999 & 2822000 Corporate Office: “Saudamini”, Plot No. 2, Sector-29, Gurugram-122001, (Haryana) Tel.: 0124-2822999 & 2822000 पंजीकृत काया(cid:330)लय: बी -9, कुतुब इं(cid:720)ी(cid:488)ूशनल ए(cid:303)रया, कटवा(cid:303)रया सराय, नई िद(cid:671)ी -110 016. दूरभाष: 011-26560112, 26560115 & 26560193, CIN: L40101DL1989GOI038121 Registered Office: B-9, Qutab Institutional Area, Katwaria Sarai, New Delhi-110 016. Tel: 011-26560112, 26560115 & 26560193, CIN : L40101DL1989GOI0381 21 Website: www.powergrid.in