Updating details for Authorization of KMP for determination of Materiality of events or information and their contact details.

Date: November 06, 2026. The Listing Department, BSE Limited Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai - 400001. Scrip Code: 530457 Sub: Updated disclosure pursuant to Regulation 30(5) of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 – Authorization of Key Managerial Personnel for determination of materiality of events or information and their contact details. Dear Sir/Madam, Pursuant to Regulation 30(5) of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015, as amended ("SEBI Listing Regulations"), and in furtherance of its commitment to transparent and timely corporate disclosures, GTT Data Solutions Limited (formerly known as Cinerad Communications Limited) ("Company") hereby provides the updated particulars of the Key Managerial Personnel ("KMPs") authorized to determine the materiality of events or information and to make appropriate disclosures to the Stock Exchange(s) on behalf of the Company. The following KMPs of the Company have been duly authorized by the Board of Directors, severally, for the aforesaid purposes. This disclosure supersedes and replaces all prior disclosures made by the Company in this regard, including the intimation dated July 4, 2024, and sets out the current and updated contact details: Sr. No. Name Designation Contact Details 1. Mr. Pankaj Ramesh Samani Managing Director Email: pankaj.samani@gttdata.ai Contact No.: +91 9595199711 2. Mr. Govind Paliwal Interim Chief Financial Officer Email: govind.paliwal@gttdata.ai Contact No.: +91 8796297229 3. Mr. Ebrahim Nimuchwala Company Secretary & Compliance Email: compliance@gttdata.ai Officer Contact No.: +91 7719913351 Note: The above-named KMPs are authorized severally, i.e., each independently holds the authority to determine materiality and make disclosures. The contact details set out above reflect the current registered details of the authorized KMPs and may be updated from time to time as and when any change occurs. We request you to kindly take the above on record. Thanking You. Yours faithfully, For GTT Data Solutions Limited (Formerly known as Cinerad Communications Limited) Ebrahim Nimuchwala Company Secretary & Compliance Officer Membership No.: A60947 Page | 1