Update on the acquisition of ~2.57% equity stake in Welspun Mauritius Holdings Limited from Welspun Pipes Inc., USA

WCL/SEC/2026 30 September, 2026 BSE Ltd. National Stock Exchange of India Ltd. Listing Department, Exchange Plaza, P. J. Towers, Dalal Street, Bandra-Kurla Complex, Mumbai – 400 001. Bandra (E), Mumbai – 400 051. (Scrip Code: Equity - 532144), (Symbol: WELCORP, Series EQ) (NCD – 973309) Dear Sir / Madam, Subject: Update - Acquisition of ~ 2.57% equity stake in Welspun Mauritius Holdings Limited (a subsidiary of the Company) from Welspun Pipes Inc., USA, a wholly-owned subsidiary of the Company Ref.: a. Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015, as amended from time to time, (“SEBI Listing Regulations”) b. ISIN: INE191B01025 With reference to our communications dated 17 January, 2026 and 31 March, 2026, wherein the proposed acquisition of ~ 2.57% equity stake in Welspun Mauritius Holdings Limited (‘WMHL’) by the Company from Welspun Pipes Inc., USA, a wholly-owned subsidiary (“WOS”) of the Company, was intimated. In this regard, we wish to inform you that the aforesaid acquisition, which was expected to be completed by 30 September, 2026, is currently pending due to the completion of certain procedural and transactional formalities. Accordingly, the completion of the said acquisition is now expected to be undertaken on or before 31 March, 2027. Upon completion of the above transaction, WMHL will become a direct wholly-owned subsidiary of the Company. The objective of the proposed acquisition is to streamline the Company’s overseas holding structure. Since the transaction is with WOS only, there is no impact on the Consolidated Financial Staments of the Company. The same is for your information and record, please. Yours faithfully, For Welspun Corp Limited Kamal Rathi Company Secretary and Compliance Officer ACS-18182