Thermax Limited has informed the exchanges about completion of second term of Mr. Harsh Mariwala (DIN:00210342) as Non-Executive, Lead - Independent Director of the Company.

November 09, 2026 The Secretary National Stock Exchange of India Limited BSE Limited Exchange Plaza, C-1, Block G, PJ Towers, Dalal Street Bandra Kurla Complex, Mumbai: 400 001 Bandra (E) Company Scrip Code: 500411 Mumbai – 400 051 Company Scrip Code: THERMAX EQ Sub: Disclosure under Regulation 30 of the SEBI (LODR) Regulations, 2015 Ref: Intimation of completion of tenure of Independent Director of the Company Dear Sir/Madam. Pursuant to Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 read with Schedule III of the Listing Regulations, we wish to inform you that Mr. Harsh Mariwala (DIN: 00210342) has ceased to be Non-Executive, Lead Independent Director of the Company upon completion of his second term of 5 years at the close of business hours of November 9, 2026. The Board of Directors and Management of the Company place on record their deep appreciation for the contributions made by Mr. Harsh Mariwala over the years, during his association with the Company. The requisite details as required by SEBI Circular No. HO/49/14/14(7)2025-CFDPOD2/I/3762/2026 dated January 30, 2026, regarding the same are enclosed herewith as Annexure “A”. This is for your information and records. You are requested to kindly take note of the same. For THERMAX LIMITED, Sangeet Hunjan Company Secretary & Compliance Officer Membership No: A23218 Encl: as above Annexure A Disclosure Requirements Brief Particulars Reasons for change viz. appointment, re- Completion of second term of 5 years as 1. appointment, resignation, removal, death Independent Director of the Company or otherwise Date of appointment/ 2. reappointment/cessation (as applicable) November 9, 2026 & term of appointment/reappointment Brief profile (in case of appointment); NA Disclosure of relationships between 4. directors (in case of appointment of a NA director)