Please find attached intimation in respect to closure of trading window for the quarter and half year ending September 30, 2026.

THE SOUTHERN GAS LIMITED Regd. Office Meera Classic, Phase II, Gogol, Borda, Post Fatorda, Margao, Goa -403 602 Tel.: (0832)2724863, 2724864, 2724865 Email: sglgoa@southerngasindia.com GSTIN: 30AAACT6201H1Z7 Website: www.southerngasindia.com Since 1963 PAN: AAACT6201H CIN: L24111GA1963PLC000562 To, 25" September 2026 The General Manager, Listing Department, BSE Limited Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai- 400001 Scrip Code: 509910 Sub: Intimation regarding Closure of Trading Window Dear Sir/Madam, In terms of the Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015, as amended, and pursuant to the Company's "Code of Conduct to Regulate, Monitor and Report Trading in the securities of the Company by Designated Persons and their Immediate Relatives", the trading window for dealing in the securities of the Company shall be closed for all Designated Persons (including their immediate relatives) from Thursday, I October, 2026 till 48 hours after the declaration of the unaudited financial results of the Company for the quarter and half year ended September 30, 2026 (both days inclusive). The date of the Board Meeting of the Company for consideration and approval of the aforesaid financial results will be intimated in due course. Kindly take the above information on record. Thanking You, Yours faithfully, For The Southern Gas Limited Roshan Varshney Company Secretary & Compliance Officer Production Units: • Bengaluru - 7338667282/83 • Bhadravati - {08282) 270561, 270397 • Harihar - (08192) 241656 • Hubballi - (0836) 2970855 • Mysuru - (0821) 2403680, 2974364 • Kozhikode - (0495) 2482311 • Kochi - (0484) 2546895 • Thiruvananthapuram - (0471) 2705511, 2704161 • Tiruchirappalli -- (0431) 2731124, 2731125 AN ISO CERTIFIED