Intimation of investment in shares of its subsidiary

19th August, 2026 National Stock Exchange of India Ltd. BSE Limited Exchange Plaza, C-1, Block G, P. J. Towers, Bandra Kurla Complex Dalal Street, Bandra (E), Mumbai – 400051 Mumbai – 400001 Symbol -TEXRAIL Scrip Code – 533326 Dear Sirs, Sub: Disclosure under Regulation 30 of the SEBI (Listing Obligation & Disclosure Requirements) Regulations, 2015 – Investment in Subsidiary of the Company Further to our intimation dated 14th August, 2026, we wish to inform you that today the Company has made investment of Rs. 6,88,00,000/- (Rupees Six Crores Eighty-Eight Lakhs only) in its subsidiary, Texmaco Defence Technologies Ltd (“TDTL”) by way of subscribing to 6,88,000 (Six Lakh Eighty- Eight Thousand) Equity Shares of Rs. 10/- each at a premium of Rs. 90/- per share. Further a new investor VAGUS DEF TECH & AEROSPACE FUND-1 has also subscribed in equity capital of TDTL and has acquired 30 % stake in that company at same rate. As a result of this transaction, status of that company has changed from wholly-owned subsidiary to subsidiary of the company. The details as required under Regulation 30 of SEBI Listing Regulations read with SEBI Master Circular HO/49/14/14(7)2025-CFD-POD2/I/3762/2026 dated 30th January, 2026 are provided in Annexure as enclosed. This is for your information and record. Thanking you, Yours faithfully, For Texmaco Rail & Engineering Limited Sandeep Kumar Sultania Company Secretary & Compliance Officer Annexure Disclosure of information pursuant to Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 Sn Particulars Information of such event (s) 1. Name of the target entity, details in brief such Name of the entity: Texmaco Defence as size, turnover etc.; Technologies Limited (“TDTL”) Total Income as on 31st March, 2026 Particulars Amount % (INR Crores) Total Income 0.01 - 2. Whether the acquisition would fall within No, as the issuance of securities is not a related party transaction(s) and whether the related party transaction. promoter/ promoter group/ group companies have any interest in the entity being acquired? Texmaco Rail & engineering Limited is the If yes, nature of interest and details thereof parent company of TDTL. Promoter/ and whether the same is done at “arm’s Promoter group/ Group does not have any length”; interest in Calculus. 3. Industry to which the entity being acquired Defence & Allied Activities belongs; 4. Objects and effects of acquisition (including The objective is to expand company’s but not limited to, disclosure of reasons for footprint in the Defence industry. acquisition of target entity, if its business is outside the main line of business of the listed entity); 5. Brief details of any governmental or Not applicable regulatory approvals required for the acquisition; 6. Indicative time period for completion of the Not applicable acquisition; 7. Consideration - whether cash consideration or Cash transaction share swap or any other form and details of the same; 8. Cost of acquisition and/or the price at which Subscription to fresh issue of Equity Shares the shares are acquired; of Rs. 10/- each at a premium of Rs. 90/- per share. 9. Percentage of shareholding / control acquired Before transaction – 100% and / or number of shares acquired; Post transaction – 70% The Company has not undertaken sale of shares and the change in shareholding is by virtue of further issue of shares by TDTL. 10. Brief background about the entity acquired in The company was incorporated on 26th terms of products/line of business February, 2020. Name of the company was acquired, date of incorporation, history of last changed from “Texmaco Rail Electrification 3 years turnover, country in which Limited” to “Texmaco Defence the acquired entity has presence and any other Technologies Limited” with effect from 28th significant information (in brief); April, 2026. The Company has presence in India and has objects of Defence & Allied Activities Last 3 years revenue – Nil