Outcome of Board Meeting held on July 24, 2026

www.stl.tech July 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 Code – 532374 Scrip ID - STLTECH Scrip Code – 973103 Sub.: Outcome of Board Meeting - Disclosure under Regulations 30, 33, 51, 52 and other applicable provisions of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015, as amended (the “Listing Regulations”) Dear Sir/ Madam, With reference to our letter dated July 16, 2026, we wish to inform you that the Board of Directors of Sterlite Technologies Limited (the “Company”), at its meeting held today i.e. on July 24, 2026, has approved, inter alia, the Unaudited Consolidated and Standalone Financial Results of the Company for the quarter ended June 30, 2026 along with Limited Review of the Statutory Auditors of the Company. In this regard, please find enclosed herewith: i. Press Release on the Unaudited Financial Results; ii. Investors Presentation on the Unaudited Financial Results; iii. Unaudited Consolidated and Standalone Financial Results; iv. Limited Review Report on the Unaudited Consolidated and Standalone Financial Results; v. Disclosure pursuant to Integrated Financial Results pursuant to SEBI Master Circular HO/49/14/14(7) 2025-CFD-POD2/I/3762/2026 dated January 30, 2026 read with relevant circulars issued by stock exchanges enclosed as Annexure I; vi. Statement of Utilization of issue proceeds raised through Preferential Issue of Warrants and Statement of Material Deviation under Regulation 32(1) of the Listing Regulations – Enclosed as Annexure II; vii. Statement of Utilization of issue proceeds of Non-Convertible Debentures and Statement of Material Deviation pursuant to Regulation 52(7) and Regulation 52 (7A) respectively of the Listing Regulations and SEBI Master Circular SEBI/HO/DDHS/DDHS-PoD1/P/CIR/2025/0000000103 dated July 11, 2025, confirming Nil deviation(s) for the quarter ended June 30, 2026; viii. The details of security cover for the quarter ended June 30, 2026 along with the certificate of the Statutory Auditors of the Company pursuant to Regulation 54(3) of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 read with SEBI Master Circular SEBI/HO/DDHS-PoD-1/P/CIR/2025/117 dated August 13, 2025 is enclosed herewith. The meeting commenced at 11:50 am and concluded at 2.36 pm. We request you to take the aforesaid on records. Thank you. Yours faithfully, For Sterlite Technologies Limited Mrunal Asawadekar Company Secretary & Compliance Officer Membership No.: A 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 Sterlite Technologies Limited 4th Floor, Godrej Millennium, STl! K Mo ar he ag ra ao sn tR rao -a 4d 9 1, S 01T S 12/1, Pune, Phone: +91-20-30514000 Fax: +91-20-30514113 CIN- L31300PN2000PLC202408 www.stl.tech PRESS RELEASE STL delivers record financial performance in Q1 FY27; reports highest ever quarterly Revenue, EBITDA and order book - Record order book of INR 18,618 Cr - EBITDA and PAT hit a record INR 397 cr and 197 Cr respectively - Achieved ‘net debt-free’ balance sheet Mumbai, 24/July/2026: STL [NSE: STLTECH], a leading connectivity solutions provider for AI- ready digital infrastructure, today announced its financial results for the quarter ended 30 June 2026. For Q1 FY’27, the Company reported the highest-ever revenues of INR 1,910 Cr and EBITDA of INR 397 Cr, a YoY growth of ~87% and ~184%, respectively. The open order book stands at INR 18,618 Cr at the end of the Quarter. STL reported a robust EBITDA margin of 20.8% in Q1FY27, the highest level achieved in nearly 20 quarters, driven by an improved product mix and operating leverage. Margin resilience was further supported by a higher contribution from the Data Center (DC) business, reflecting the Company's increasing alignment with the AI-led data center buildout. To further strengthen its position, the Company recently secured a Qualified Institutions Placement (QIP) of INR 1,500 Cr. The successful fund raise enabled the Company to become net debt free while providing the capital required to accelerate its next phase of growth. Reflecting this strengthened balance sheet and improved credit profile, CRISIL revised its rating outlook to 'Stable', while ICRA upgraded the Company's credit rating to 'AA (Stable)'. Key order wins: ● Secured a multi-year contract worth US$ 1.11 billion (₹10,000+ Cr) to supply optical connectivity products for next-generation AI data centers ● Secured multiple hyperscaler orders worth $100 Mn+ for the Neuralis portfolio - STL’s integrated data center solutions ● Secured a strategic order to supply long-haul, dark-fibre High Density Micro-cables to a major connectivity infrastructure provider Innovation, Research and Development STL continued to strengthen its product portfolio and exhibit leadership in next-generation optical fibre products, in line with the demands of AI-ready digital infrastructure: ● AI-DC Portfolio: Neuralis, a purpose-built connectivity suite for AI-Data Centers, enabling ultra-high-density cabling for GPU-intensive workloads Sterlite Technologies Limited 4th Floor, Godrej Millennium, STl! K Mo ar he ag ra ao sn tR rao -a 4d 9 1, S 01T S 12/1, Pune, Phone: +91-20-30514000 Fax: +91-20-30514113 CIN- L31300PN2000PLC202408 www.stl.tech ● Introduced CONCAT, a pre-connectorized, plug-and-play solution that reduces onsite labour and installation costs ● Developed US Conec-certified MMC Pre-Terminated solutions, delivering a 3X increase in cabling density to power the 800G+ future of AI data centers Decisive win in Europe Patent Dispute This win reinforces the strength of STL's IP portfolio, which now stands at 785+* patents, underscoring the Company's sustained investment in innovation and its ability to protect and monetize its technology as it scales globally. It also further strengthens STL’s position in Optical Connectivity markets across the UK and Europe. "Q1 FY'27 has been the strongest quarter in STL's history. Our highest-ever revenue and profitability reflect the strength of our AI-ready digital infrastructure portfolio and the trust hyperscalers and telecom operators are placing in us,” said Ankit Agarwal, MD, STL. “The rapid scale-up in our Data Center business, shows how decisively we've aligned with the AI infrastructure buildout. With a record order book and customer trust, we expect to continue delivering innovative, reliable solutions that propel our customers' growth.” Financials** Q1 FY’27 Q1 FY’26 Q4 FY’26 (INR Cr) Revenue 1910 1019 1441 EBITDA 397 140 218 PAT 197 10 59 *Patents filed and granted **All financials are from continued operations About STL - Sterlite Technologies Ltd: STL is a global leader in advanced connectivity solutions, providing end-to-end solutions for building AI-ready infrastructure, FTTx, Rural, Enterprise and Data Centre networks. With manufacturing facilities in North America, Europe and Asia, we deliver our solutions in more than 100 countries. Data Centre & Cloud companies, Telecom operators, Internet service providers and Large enterprises collaborate with STL to build their future- ready digital infrastructure. STL’s business goals are driven by customer-centricity, R&D and sustainability. Read more, Contact us, stl.tech | Twitter | LinkedIn| YouTube For more information, contact: Media Relations Investor Relations Shaily Rai Sinha Rahul Darak Phone: +91 22 30450450 Phone: +91 22 30514000 stl.communications@stl.tech investor@stl.tech Earnings Brand color Presentation Complimentar colors Earnings Call Q1FY27 24th July 2026 Text color © 2022-2023 Sterlite Technologies Limited Safe Harbour Certain words and statements in this communication concerning S [Showing first 8,000 characters — download PDF for full document]