Please find enclosed the letter sent to shareholders.

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: August 7, 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 Scrip Code: 544612 Subject: Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sir/Madam, This is to inform you that in accordance with Regulation 36(1)(b) of the SEBI (Listing Obligations & Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”), the Company has sent a letter to those shareholders whose e-mail addresses are not registered with Company/Registrar & Transfer Agent/Depository Participants, providing the weblink of Company’s website from where the Integrated Annual Report for FY 2025-26 can be accessed. A copy of the letter is enclosed for your records. The above information is also being made available on the Company’s website at https://tennecoindia.com/investor-relations/. 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 Encl: as above Registered Office: RNS2, Nissan Supplier Park, SIPCOT Industrial Park Oragadam Industrial Corridor, Sriperumbudur, Taluk, Kancheepuram, Tamil Nadu, India, 602105