Pendency of Litigation(s)/dispute(s) or the outcome impacting the Company

TENNECO CLEAN AIR INDIA LIMITED (formerly known as Tenneco Clean Air India Private Limited) CIN: L29308TN2018FLC126510 Telephone: +2135 612501/506 Email: Tennecoindiainfo@tenneco.com Website: www.tennecoindia.com Date: October 6, 2026 To To National Stock Exchange of India Limited BSE Limited Exchange Plaza, C-1, Block G Phiroze Jeejeebhoy Towers Bandra Kurla Complex, Dalal Street, Bandra (E), Mumbai – 400051 Mumbai – 400001 Scrip Symbol: TENNIND S c r i p C ode: 544612 Subject: Disclosure under Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 (as amended from time to time) Dear Sir/Madam, Pursuant to the provisions of Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (LODR Regulations) read with Para B(8) of Part A of Schedule III of the LODR Regulations and Industry Standards Note on Regulation 30 of LODR Regulations issued in this regard, please find the details of an Show Cause Notice (“SCN”) issued from office of the Deputy Commissioner of State Tax, Department of Goods and Service Tax under the applicable provisions of Maharashtra Goods & Services Tax Act, 2017. Further, we state and declare that the information and details provided in the Annexure, in compliance with Regulation 30(13) of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015, are true, correct and complete to the best of our knowledge and belief. The details of the above SCN, as required under regulation, are enclosed as Annexure A. You are requested to kindly take the same on record. Sincerely, For Tenneco Clean Air India Limited Roopali Singh Company Secretary and Compliance Officer Membership No: A15006 Place: Gurugram Enc. As above Registered Officer: RNS2, Nissan Supplier Park, SIPCOT Industrial Park Oragadam Industrial Corridor, Sriperumbudur, Taluk, Kancheepuram, Kancheepuram, Tamil Nadu, India, 602105 TENNECO CLEAN AIR INDIA LIMITED (formerly known as Tenneco Clean Air India Private Limited) CIN: L29308TN2018FLC126510 Telephone: +2135 612501/506 Email: Tennecoindiainfo@tenneco.com Website: www.tennecoindia.com Annexure A Sr. Details of Events that need to be Information about such events(s) No. provided a. Brief details of litigation viz. name(s) On October 5, 2026, Tenneco Clean Air India Limited (“Company”) of the opposing party, court/ received a show cause notice dated September 29, 2026 (“SCN”) tribunal/agency where litigation is from the Deputy Commissioner of State Tax, Department of Goods filed, brief details of and Services Tax, Maharashtra, under Section 73(1) of the dispute/litigation Maharashtra Goods and Services Tax Act, 2017 for FY 2022-23 primarily for excess availment of input tax credit of ₹285,488,700/- together with interest of ₹224,429,799/- and penalty of ₹57,117,740/-. b. Expected financial implications, if Based on the assessment, the Company believes that it has any, due to compensation, penalty adequate factual and legal grounds to contest the allegations. The etc. Company is evaluating the allegations raised in the SCN and is in the process of preparing a detailed response, supported by the relevant reconciliations, records and legal submissions, which will be filed within the prescribed timeline. The SCN is at a preliminary stage and does not constitute a final order or confirmed demand. Accordingly, the Company does not presently envisage any material impact on its financial position, operations or other activities. c. Quantum of claims, if any As mentioned above Registered Officer: RNS2, Nissan Supplier Park, SIPCOT Industrial Park Oragadam Industrial Corridor, Sriperumbudur, Taluk, Kancheepuram, Kancheepuram, Tamil Nadu, India, 602105