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 |
