Action(s) taken or orders passed

www.stl.tech July 03, 2026 National Stock Exchange of India Limited BSE Limited Exchange Plaza, 5th Floor, Phirozee Jeejeebhoy Towers, Plot No. C-1, G Block, Dalal Street, Bandra Kurla Complex, Bandra (East) Mumbai – 400001 Mumbai – 4000517 Scrip ID - STLTECH Scrip Code - 532374 Subject: Update on pending litigation under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sir/Madam, With reference to intimation filed on December 05, 2025 and pursuant to Regulation 30 read with Para B of Part A of Schedule III of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 and SEBI Circular No. HO/49/14/14(7)2025-CFDPOD2 / I / 3762 / 2026 dated January 30, 2026, Sterlite Technologies Limited (‘the Company’) hereby submits an update on the ongoing litigation. We request you to take the same on record. Thank you. Yours faithfully, For Sterlite Technologies Limited Mrunal Asawadekar Company Secretary (ACS 24346) Encl.: As Above Sterlite Technologies Limited R egistered office: 4th Floor, Godrej Millennium, Koregaon Road 9, STS 12/1, Pune, Maharashtra- 411 001, India. CIN - L31300PN2000PLC202408 www.stl.tech Annexure A S. No. Particulars Description i. t he details of any change in the status and / or any development in relation to such proceedings a. name(s) of the opposing party; a. Fujikura LTD and Fujikura Europe Limited b. court/ tribunal/agency where litigation is filed; b. Technical Board of Appeal of European Patent Office, Germany c. update on dispute/litigation c. Fujikura’s patent EP3796060, involved in patent infringement litigation in the UK as disclosed in our letter dated December 5, 2025, has been revoked in its entirety by the Technical Board of Appeal. This non-appealable decision effectively brings a formal end to the UK patent litigation concerning the Company’s Celesta cable family. Following this favourable outcome, the Company is actively pursuing the recovery of legal defence costs from Fujikura. ii. i n the case of litigation against key management Not Applicable 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 iii. i n the event of settlement of the proceedings, Not Applicable 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. quantum of claims, if any Not Applicable Sterlite Technologies Limited R egistered office: 4th Floor, Godrej Millennium, Koregaon Road 9, STS 12/1, Pune, Maharashtra- 411 001, India. CIN - L31300PN2000PLC202408