Acquisition

September 15, 2026 To National Stock Exchange of India Limited The Secretary Exchange Plaza, C-1, Block G, BSE Limited Bandra Kurla Complex, PJ Towers, Dalal Street Bandra (E) Mumbai: 400 001 Mumbai – 400 051 Company Scrip Code: 500411 Company Scrip Code: THERMAX EQ Sub: Intimation under Regulation 30 read with Schedule III of SEBI (LODR) Regulations, 2015 – Incorporation of wholly owned step-down subsidiary Dear Sir / Madam, Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“Listing Regulations”), we wish to inform you that Thermax Engineering Construction Company Limited (TECC), a wholly owned subsidiary of the Company, has incorporated a Company with the name Thermax Botswana Proprietary Limited and the Certificate of Incorporation for Thermax Botswana Proprietary Limited has been issued by the Companies and Intellectual Property Authority (CIPA), Botswana on September 14, 2026. The communication was received by the Company on September 15, 2026 at 1:32 p.m. IST. Accordingly, Thermax Botswana Proprietary Limited has become a wholly owned subsidiary of TECC and a wholly owned step-down subsidiary of the Company. The requisite details as required by SEBI Circular No. HO/49/14/14(7)2025-CFD-POD2/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. Thanking you, Yours faithfully, For THERMAX LIMITED, Sangeet Hunjan Company Secretary & Compliance Officer Membership No: A23218 Encl: as above Annexure A Sr. Disclosure Requirements Brief Particulars 1 Name of the entity, date & country of Name: Thermax Botswana Proprietary Limited. incorporation, etc. Incorporated on September 14, 2026. Registration Number: BW00009907836 2. Name of holding company of the Thermax Engineering Construction Company Limited (TECC), a incorporated company and relation wholly owned subsidiary of the Company has incorporated a with the listed entity Company with the name Thermax Botswana Proprietary Limited. 3. Industry to which the entity being To provide support services for Boilers & Power Plants. incorporated belongs 4. Brief background about the entity incorporated in terms of products / line of business 5. Brief details of any governmental or NA regulatory approvals required for the incorporation 6. Nature of consideration - whether cash Cash consideration or share swap and details of the same 7. Cost of subscription / price at which the Capital of BWP 10,000 will be infused in due course of time. shares are subscribed 8. Percentage of shareholding / control by 100% the listed entity and / or number of shares allotted