Qualified Institutional Placement

www.stl.tech June 24, 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, 23(1)(b) and 62(1)(c) of the Companies Act, 2013, including the rules made thereunder, each as amended (the “Issue”) Dear Sir/Madam, We wish to inform you that pursuant to the approval of the board of directors of the Company (the “Board”), at its meeting held on April 29, 2026, and pursuant to the special resolution passed by the shareholders of the Company by way of postal ballot dated June 16, 2026, and the Authorization and Allotment Committee of the Board (the “Committee”) has, at its meeting held today i.e. June 24, 2026, inter alia, considered and approved the following: a. Authorizing the opening of the Issue today, i.e. June 24, 2026; b. Approving and adopting the preliminary placement document dated June 24, 2026, together with the application form, dated June 24, 2026 to be sent to eligible qualified institutional buyers inviting bids and for the purpose of receiving filled in application forms along with application amounts for subscription of Equity Shares in connection with the Issue; and c. Approving the floor price for the Issue, being ₹ 613.69 per Equity Share, (the “Floor Price”), based on the pricing formula as prescribed under the SEBI ICDR Regulations; and We further wish to inform you that the Committee has fixed the ‘relevant date’ for the purpose of the Issue, in terms of the Regulation 171(b)(i) of the SEBI ICDR Regulations, as June 24, 2026, i.e., date of the meeting in which the Committee decides to open the Issue and accordingly the floor price in respect of the aforesaid Issue, based on the pricing formula as prescribed under Regulation 176(1) of the SEBI ICDR Regulations is ₹ 613.69 per Equity Share. Pursuant to Regulation 176(1) of the SEBI ICDR Regulations and the approval of the shareholders, accorded through a special resolution by way of postal ballot dated June 16, 2026, the Company may offer a discount of not more than 5% on the Floor Price so calculated for the Issue. The Issue price will be determined by the Company in consultation with the book running lead managers (the “BRLMs”) appointed for the Issue. In this relation, we are filing the preliminary placement document dated June 24, 2026, with the BSE Limited and National Stock Exchange of India Limited on June 24, 2026. The meeting of the Committee commenced at 10.30 p.m. and concluded at 11.45 p.m. Further, as per the Company’s ‘Code of Conduct to Regulate Monitor and Report Trading by Insiders’ (the “Code”) to regulate, monitor and report trading by ‘Designated Persons’ as defined in the Code, the trading window for dealing in the securities of the Company had already been closed from May 14, 2026, till 48 hours after determination of issue price for all ‘Designated Persons.’ Sterlite Technologies Limited Registered office: 4th Floor, Godrej Millennium, Koregaon Road 9, STS 12/1, Pune, Maharashtra- 411 001, India. CIN - L31300PN2000PLC202408 www.stl.tech Copy of the preliminary placement document dated June 24, 2026 is also being made available on the website of our Company at www.stl.tech. We request you to take the above on record and the same be treated as compliance under the applicable provisions of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015, as amended. Thanking you. Yours faithfully, For Sterlite Technologies Limited Mrunal Asawadekar Company Secretary & Compliance Officer Membership No.: A 24346 Sterlite Technologies Limited Registered o ffice: 4th Floor, Godrej Millennium, Koregaon Road 9, STS 12/1, Pune, Maharashtra- 411 001, India. CIN - L31300PN2000PLC202408