Analysts/Institutional Investor Meet/Con. Call Updates

HQ/CS/CL.24B/18465 July 13, 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 of Earnings Call for the quarterly results pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015. Pursuant to Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we hereby inform you that an Earnings Call for the quarter ended June 30, 2026 has been scheduled to be held via webinar on Wednesday, July 22, 2026 at 5:00 pm IST. The details for registration and for joining the call are enclosed. 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 Q1 FY27 Earnings call Invite Please join us for our Q1 FY27 earnings call on Wednesday, July 22nd, 2026 Tata Communications Q1FY27 22nd July 2026 5:00PM - 6:00 PM IST Concall Registration Link ( Click Here ) 5:00 pm IST | 7:30 pm SGT | 12:30 pm UK | 7:30 am ET Instructions to join the Zoom webinar: 1. Tata Communications will be conducting the Earnings Call on Zoom webinar. Please download the latest Zoom application for PC / Mac / iOS / Android device beforehand: https://zoom.us/download You may also install the app or add browser extension upon prompt by the system during the registration. 2. Pre-registration for the webinar is mandatorily required. Participants can register up to 15 minutes before the call commences. Please register using the link in the Webinar details above. 3. Q&A Session: Post the management commentary, the Company will host Q&A session. To join the queue, please click the 'Raise Hand' icon at the bottom of your Zoom window, you may do this at any time during the presentation. When called upon, please accept the prompt to 'Unmute' to ask your question.". For more information, visit us at www.tatacommunications.com © 2024 Tata Communications. All Rights Reserved. TATA COMMUNICATIONS and TATA are trademarks of Tata Sons Limited in certain countries. 1 4. You may ask questions only if connected via the Web/Desktop Application 5. Please note all the participants (except management) will have their video disabled and audio on mute during the call. The participant asking questions will only be requested to have his/her audio unmuted 6. We request all the participants to join using the latest Zoom application to ensure a high quality and uninterrupted experience. Please join 10 minutes prior to the scheduled start to ensure that you are connected on time. For more information, visit us at www.tatacommunications.com © 2024 Tata Communications. All Rights Reserved. TATA COMMUNICATIONS and TATA are trademarks of Tata Sons Limited in certain countries 2