REVISION IN COMPLETION SCHEDULE FOR DURGAPUR - HALDIA & DHAMRA - HALDIA PIPELINE SECTIONS OF INTEGRATED JAGDISHPUR - HALDIA - BOKARO - DHAMRA PIPELINE PROJECT

ND/GAIL/SECTT/2026 30.10.2026 Listing Compliance Listing Compliance National Stock Exchange of India Limited BSE Limited Exchange Plaza, 5th Floor, Plot No. C/1 Floor 1, Phiroze Jeejeebhoy G Block, Bandra-Kurla Complex Towers, Dalal Street Bandra (East) Mumbai – 400051 Mumbai – 400001 Scrip Code: GAIL-EQ Scrip Code: 532155 Sub: Disclosure of event or information under Regulation 30 of SEBI LODR Regulations, 2015 Sir/Madam, This is in continuation of our letter dated 25.03.2026. Please find below disclosure pertaining to event or information as stipulated in Regulation 30 of SEBI (LODR) Regulations, 2015: REVISION IN COMPLETION SCHEDULE FOR DURGAPUR – HALDIA & DHAMRA – HALDIA PIPELINE SECTIONS OF INTEGRATED JAGDISHPUR – HALDIA – BOKARO – DHAMRA PIPELINE PROJECT a Pipeline Jagdishpur – Haldia – Dhamra – Haldia Bokaro – Dhamra Pipeline Pipeline b Length Authorized/ under 3306 Km/3345 Km 240 Km/ 253 Km execution (Revised Length) c Pipeline Completed 3280 Km 244 Km d Pipeline Commissioned 3119 Km 150 Km e Revised Completion March 2027 March 2027 Schedule f Additional Investment Not Required Not Required required g Rationale Delay in availability of Delay in availability of hindrance free fronts hindrance free fronts Further, approval for extension in completion schedule of aforesaid project(s) is being taken up with PNGRB. It was approved by the Board of Directors of the Company in its meeting held today i.e. 30.10.2026 which commenced at 11.00 a.m. and concluded at 02:25 p.m. This disclosure is in compliance of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015. Thanking you Yours faithfully (Deepak Asija) Company Secretary Copy to: 1. Deutsche Bank AG, Filiale Mumbai TSS & Global Equity Services The Capital, 14th Floor C-70, G Block, Bandra Kurla Complex Mumbai -400051 2. Beacon Trusteeship Limited 4C and D Siddhivinayak Chambers, Gandhi Nagar, Opposite MIG Cricket club, Bandra East, Mumbai -400051