General Updates

HQ/CS/CL.24B/18534 October 21, 2026 National Stock Exchange of India Limited BSE Limited Exchange Plaza, Bandra Kurla Complex, P.J. Towers, Dalal Street, Mumbai – 400 051 Mumbai – 400 001 SYMBOL: TATACOMM Scrip Code: 500483 Dear Sir / Madam, Sub: Intimation under Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 – Update on material litigation This is with reference to our letter dated August 14, 2023 and subsequent updates submitted as part of the Quarterly Integrated Filing (Governance) regarding the ongoing material litigation involving Tata Communications (Spain) S.L. (‘TC Spain’), a subsidiary of the Company. We wish to inform that the National Court of Spain has ruled in favour of TC Spain and has annulled the resolution of the Tribunal Económico Administrativo Central (‘TEAC’), including the VAT demand and the corresponding penalty imposed by the Spanish Tax Agency (‘STA’) thereon. The judgment constitutes a material development in the aforesaid litigation. However, the matter remains subject to further legal and administrative processes available under applicable law and has not attained finality. Details as required under Regulation 30 of the SEBI Listing Regulations read with SEBI Master Circular dated January 30, 2026 are enclosed as Attachment A. The aforesaid documents are also placed on the website of the Company at www.tatacommunications.com/investors. Kindly take the same on your records. Thanking you, Yours faithfully, For Tata Communications Limited Zubin Adil Patel Company Secretary and Compliance Officer Tata Communications Limited Plot No. C21 & C 36 ‘G’ Block Bandra Kurla Complex Bandra (East) Mumbai 400098 India Regd. Office: VSB Mahatma Gandhi Road Fort Mumbai – 400 001 Tel: 91 92289 18171 email: investor.relations@tatacommunications.com CIN: L64200MH1986PLC039266 website: www.tatacommunications.com Attachment A Details required under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 read with SEBI Master Circular No. HO/49/14/14(7)2025-CFD POD2/I/3762/2026 dated January 30, 2026. No. Items of Disclosure Description 1. The details of any change in The Company had earlier disclosed an ongoing material litigation the status and/or any involving Tata Communications (Spain) S.L. (‘TC Spain’), a development in relation to subsidiary of the Company, relating to refund of input VAT claimed such proceedings by TC Spain and a corresponding demand raised by the Spanish Tax Agency (‘STA’) amounting to EUR 15,505,607.73 towards VAT and interest thereon, along with a penalty of EUR 18,102,272.48. The matter was pending before the National Court of Spain pursuant to an appeal filed by TC Spain against the decision of the Tribunal Económico Administrativo Central (‘TEAC’) The National Court of Spain has now delivered its judgement and ruled in favour of TC Spain. Pursuant to the judgement, the resolution of TEAC, the VAT demand and the corresponding penalty imposed by the STA have been annulled. The judgment remains subject to appellate remedies and/or such further legal or administrative proceedings as may be available under applicable law. 2. In the case of litigation against Not Applicable. key management personnel or its promoter or ultimate person in control, regularly provide details of any change in the status and / or any development in relation to such proceedings 3. In the event of settlement of Not Applicable. the proceedings, details of such settlement including - terms of the settlement, compensation/ penalty paid (if any) and impact of such settlement on the financial position of the listed entity Tata Communications Limited Plot No. C21 & C 36 ‘G’ Block Bandra Kurla Complex Bandra (East) Mumbai 400098 India Regd. Office: VSB Mahatma Gandhi Road Fort Mumbai – 400 001 Tel: 91 92289 18171 email: investor.relations@tatacommunications.com CIN: L64200MH1986PLC039266 website: www.tatacommunications.com