Tenneco Clean Air India Limited, established in 2018, is the Indian subsidiary of the global automotive leader Tenneco Inc. Specializing in emission control technologies, the company provides advanced exhaust and after-treatment systems—such as catalytic converters, DPFs, and mufflers—to help vehicle manufacturers meet strict BS-VI norms. With a strong focus on innovation and sustainability, it operates 12 manufacturing facilities across India, supporting both clean air solutions and advanced ride performance technologies.

Tenneco Clean Air is launching a Book Built Initial Public Offering (IPO) to raise approximately ₹3,600 crores, comprising an offer for sale of up to 9,06,80,101 equity shares (face value ₹10 each). The public issue opens on November 12, 2025, and closes on November 14, 2025, with a price band set at ₹378 to ₹397 per share.

The allotment of shares is scheduled for November 17, 2025, and the equity shares are expected to be listed on the BSE and NSE on November 19, 2025. The investor allocation is reserved as 35% for retail investors, 50% for Qualified Institutional Buyers (QIB), and 15% for High Net-worth Individuals (HNI). Financially, while the company’s revenue decreased from ₹5,537.39 crores in 2024 to ₹4,931.45 crores in 2025, it demonstrated improved profitability, with net profit increasing from ₹416.79 crores to ₹553.14 crores during the same period.

Tenneco Clean Air IPO Details

IPO Date	November 12, 2025 to November 14, 2025
Listing Date	November 19, 2025
Face Value	₹10 per share
Issue Price Band	₹378 to ₹397 per share
Issue Price Final	₹397 per share
Lot Size	37 Shares
Total Issue Size	Approx ₹3,600 Crores
Issue Type	Book building IPO
Listing At	BSE, NSE
Share Holding Pre Issue	40,36,04,309 shares
Share Holding Post Issue	40,36,04,309 shares

Tenneco Clean Air IPO Dates

The Initial Public Offering (IPO) for Tenneco Clean Air will be open for subscription from November 12 to November 14, 2025.

IPO Open Date	Wed, Nov 12, 2025
IPO Close Date	Fri, Nov 14, 2025
Tentative Allotment	Mon, Nov 17, 2025
Refunds	Tue, Nov 18, 2025
Credit of Shares to Demat	Tue, Nov 18, 2025
Tentative Listing Date	Wed, Nov 19, 2025
UPI Mandate Confirmation Deadline	5 PM on Fri, Nov 14, 2025

Tenneco Clean Air IPO Market Lot

The public issue stipulates a market lot size of 37 shares, translating to a minimum application value of ₹14,689. The upper limit for retail subscription is set at 13 such lots, representing 481 shares and a maximum application amount of ₹1,90,957.

Application	Lot Size	Shares	Amount
Retail Minimum	1	37	₹14,689
Retail Maximum	13	481	₹1,90,957
S-HNI Minimum	14	518	₹2,05,646
S-HNI Maximum	68	2,516	₹9,98,852
B-HNI Minimum	69	2,553	₹10,13,541

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Tenneco Clean Air IPO Details: Dates, Price & Key Insights