Trading Window

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: June 26, 2026 National Stock Exchange of India Limited BSE Limited Exchange Plaza, C-1, Block G P hiroze Jeejeebhoy Towers Bandra Kurla Complex, D alal Street, Bandra (E), Mumbai – 400051 Mumbai – 400001 Scrip Symbol-TENNIND S c r i p C ode: 544612 Sub: Closure of Trading Window for dealing in securities of the Company in terms of SEBI (Prohibition of Insider Trading) Regulations, 2015 as amended (“SEBI PIT Regulations”) Dear Sir/Madam, Pursuant to the Code of Conduct on Prevention of Insider Trading of Tenneco Clean Air India Limited (“the Company”) and SEBI (Prohibition of Insider Trading) Regulations, 2015, the trading window for dealing in the securities of the Company shall be closed for designated persons from Wednesday, July 1, 2026 and shall remain closed till 48 hours after the declaration of the un-audited financial results of the Company for quarter ending on June 30, 2026 to the stock exchanges. The date of the meeting of the Board of directors to approve the un-audited financial results of the company for the aforementioned quarter, shall be informed to the stock exchanges in due course. This is for your information and records. Sincerely, For Tenneco Clean Air India Limited Roopali Singh Company Secretary and Compliance Officer Membership No: A15006 Place: Gurugram Registered Office: RNS2, Nissan Supplier Park, SIPCOT Industrial Park Oragadam Industrial Corridor, Sriperumbudur, Taluk, Kancheepuram, Tamil Nadu, India, 602105