Action(s) taken or orders passed

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: November 4, 2026 To To National Stock Exchange of India Limited B S E Limited Exchange Plaza, C-1, Block G P h i r o ze Jeejeebhoy Towers Bandra Kurla Complex, D a l a l Street, Bandra (E), Mumbai – 400051 M u m bai – 400001 Scrip Symbol: TENNIND S c r i p C o d e : 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 Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“LODR Regulations”), read with the applicable Industry Standards on Regulation 30, we hereby inform you of the following: The Company had, in its Red Herring Prospectus under the section “Litigation involving our Company”, disclosed the proceedings relating to the show cause notice dated November 3, 2023 (“SCN”) issued by the Collector of Stamps, Enforcement-I, Mumbai (“Collector”), proposing levy and recovery of stamp duty of ₹136.23 million and penalty of ₹68.12 million in relation to the instrument comprising the order dated April 26, 2019 passed by the Hon’ble National Company Law Tribunal, Chennai sanctioning the Scheme of Arrangement (Demerger) between Tenneco Automotive India Private Limited, as the demerged company, and the Company, as the resulting company. The Company had challenged the Collector’s order dated February 2, 2024 (issued pursuant to SCN) before the Hon’ble Bombay High Court in Writ Petition. The Hon’ble Bombay High Court by its order dated December 5, 2025 and April 6, 2026, directed the Collector to pass a reasoned order after hearing the Company, while leaving all contentions open. The Collector has passed a final order dated October 27, 2026 (“Order”), under Section 31 of the Maharashtra Stamp Act, 1958, which was received by the Company on November 3, 2026, reconfirming the stamp duty of ₹128.46 million and enhancing the penalty to ₹243.59 million. Based on the assessment of the Company and its legal advisers, the Company believes that it has adequate legal grounds to challenge/contest the Order and is evaluating appropriate legal remedies. The details of the aforesaid Order, as required under Regulation 30 of the LODR Regulations, 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. Name of the authority Office of the Collector of Stamps, Enforcement -I, Government of Maharashtra. (“Collector”) b. Nature and details of the action(s) A show cause notice dated November 3, 2023 was issued by the taken or order(s) passed including Collector (“SCN”) to the Company, proposing the levy and recovery brief details of dispute/litigation. of stamp duty of ₹136.23 million and a penalty of ₹68.12 million in respect of the instrument comprising the order of the Hon’ble National Company Law Tribunal, Chennai dated April 26, 2019, sanctioning the Scheme of Arrangement (Demerger) between Tenneco Automotive India Private Limited, as the demerged company, and the Company, as the resulting company. After considering the objections and submissions of the Company, the Collector passed an order dated February 2, 2024 confirming the demand raised under the SCN (“Confirmation Order”). The Company challenged the SCN and Confirmation Order before the Hon’ble High Court of Judicature at Bombay by filing Writ Petition. The Hon’ble Bombay High Court by its order dated December 5, 2025 and April 6, 2026, directed the Collector to pass a reasoned order after hearing the Company, while leaving all contentions open. Consequently, the Collector passed an order dated October 27, 2026 (“Order”) under Section 31 of the Maharashtra Stamp Act, 1958 raising a demand of ₹128.46 million (₹136.23 million less ₹7.78 million paid by the Company) for stamp duty and imposing a penalty of ₹243.59 million. The aggregate amount payable under the Order is therefore ₹372.04 million c. Date of receipt of direction or order, Company has received order dated October 27, 2026 on November including any ad-interim or interim 03, 2026. orders, or any other communication from the authority; d. Details of the The Order, passed under Section 31 of the Maharashtra Stamp Act, violation(s)/contravention(s) 1958 (“Act”), relates to a shortfall in payment of stamp duty committed or alleged to be chargeable under Article 25(da) of Schedule I to the Act on the NCLT committed; order sanctioning the Scheme of Arrangement (Demerger). e. Impact on financial, operation or Based on the assessment of the Company and its legal advisers, the other activities of the listed entity, Company believes that it has adequate legal grounds to quantifiable in monetary terms to challenge/contest the Order and is evaluating appropriate legal the extent possible, due to remedies. compensation, penalty etc f. 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