Qualified Institutional Placement

www.stl.tech June 30, 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 - 400 001. Mumbai - 400 051. Scrip ID - STLTECH Scrip Code - 532374 Sub: Qualified institutions placement of equity shares of face value of ₹2 each (the “Equity Shares”) by Sterlite Technologies Limited (the “Company”) under the provisions of Chapter VI of the Securities and Exchange Board of India (Issue of Capital and Disclosure Requirements) Regulations, 2018, as amended (the “SEBI ICDR Regulations”), and Sections 42 and 62(1)(c) of the Companies Act, 2013, including the rules made thereunder, each as amended (the “Issue”). Further to our earlier intimation dated June 24, 2026 informing about the Opening of the Issue, we wish to inform that the Board at its meeting held today i.e. June 30, 2026, inter alia, considered and approved the following: a. Approved and declared the closure of the Issue today i.e. June 30, 2026, pursuant to the receipt of application forms and the funds in the escrow account(s) from the eligible qualified institutional buyers (the “QIBs”) in accordance with the terms of the Issue; b. Determined and approved the allocation of 2,57,28,500 Equity Shares at an Issue price of ₹583.01 per Equity Share (including a premium of ₹581.01 per Equity Share), which is at a discount of 5% to the floor price of ₹613.69 per Equity Share (amounting to ₹ 30.68 per Equity Share), in accordance with the SEBI ICDR Regulations upon the closure of the Issue, determined as per the formula prescribed under Regulation 176(1) of the SEBI ICDR Regulations and further approving the allocation of 2,57,28,500 Equity Shares to be allotted to the eligible QIBs in the Issue; c. Approved and adopted the placement document dated June 30, 2026, copy of the same is being made available on the website of the Company at https://stl.tech/investor/; and d. Approved and finalised the confirmation of allocation note to be sent to the eligible QIBs, intimating them of allocation of Equity Shares pursuant to the Issue. The meeting of the Board commenced at 7.30 p.m. and concluded at 9.15 p.m. We request you to take the above on record and treat the same as compliance under the applicable provisions of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015, as amended. Copy of the placement document dated June 30, 2026, is also being made available on the website of our Company at https://stl.tech/investor/. Thanking you. Yours faithfully, For Sterlite Technologies Limited Mrunal Asawadekar Company Secretary & Compliance Officer Membership No.: A 24346 Sterlite Technologies Limited Registered office: 4th Floor, Godrej Millennium, Koregaon Road 9, STS 12/1, Pune, Maharashtra- 411 001, India. CIN - L31300PN2000PLC202408