Outcome of Board Meeting

www.stl.tech October 23, 2026 National Stock Exchange of India Limited BSE Limited Exchange Plaza, 5th Floor, Phiroze 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 October 06 and 13, 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 October 23, 2026, has approved, inter alia, the Unaudited Consolidated and Standalone Financial Results of the Company for the quarter and half year ended September 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 and as required under SEBI Master Circular No. SEBI/HO/49/14/14(7)2025-CFDPOD2/I/3762/2026 dated January 30, 2026 – Enclosed as Annexure II; vii. Statement of Utilization of issue proceeds raised through Qualified Institutional Placement of equity shares and Statement of Material Deviation under Regulation 32(1) of the Listing Regulations and as required under SEBI Master Circular No. SEBI/HO/49/14/14(7)2025-CFDPOD2/I/3762/2026 dated January 30, 2026 – Enclosed as Annexure III; viii. 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 September 30, 2026; ix. The details of security cover for the quarter ended September 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. 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 The meeting commenced at 10:00 am and concluded at 12.40 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 www.stl.tech PRESS RELEASE STL achieves record Q2 FY’27, with highest-ever revenue, EBITDA and open order book • Record order book of INR 35,274 Cr and highest-ever revenue of INR 2,529 Cr • Signed multi-year long-term supply agreements (LTSAs) with hyperscalers and telecom operators Mumbai, 23/October/2026: STL [NSE: STLTECH], a leading connectivity solutions provider for AI-ready digital infrastructure, today announced its financial results for the quarter ended 30 September 2026. For Q2 FY’27, the Company reported the highest-ever revenue of INR 2,529 Cr and EBITDA of INR 846 Cr, a YoY growth of ~145% and ~500%, respectively. The open order book stands at INR 35,274 Cr at the end of the quarter. This record revenue reflects the convergence of several factors. Demand for AI-ready digital infrastructure continues to accelerate, with hyperscalers building out data centers that need far more fibre per rack than earlier cloud architectures. A growing share of the business now comes from integrated optical connectivity solutions, with the optical connectivity attach rate reaching an all-time high of 24% during H1 FY’27. Large multi-year agreements with hyperscalers and telecom operators supported strong order intake and steady execution through the quarter. STL also reported a net debt-free balance sheet this quarter, with PAT at INR 517 Cr, driven by strong revenue growth, margin expansion and a one-time tariff refund gain. Key order wins in H1 FY’27: STL’s diversified order wins during H1 reflect growing demand for high-performance optical connectivity solutions from hyperscalers and telecom operators globally: • A US$ 1.2 Bn (~INR 11,500 Cr) multi-year long-term agreement with a hyperscaler to supply optical connectivity products from CY26 to CY30. • A US$ 1.11 Bn (~INR 10,500 Cr) Product Award Letter from a hyperscaler to supply optical connectivity products from FY27 to FY29. • A $288 Mn (~INR 2,700 Cr) deal with a hyperscaler for high-density optical fibre cable products from CY27 to CY29. • A US$ 210 Mn (~INR 2,000 Cr) deal for a leading telecom infrastructure company for high-density optical fibre cables from CY27 to CY29. • A multi-year optical cable supply agreement worth INR 960 Cr with a leading Indian telecom operator. Innovation STL continued to strengthen its portfolio of next-generation optical products in line with the needs of AI-ready digital infrastructure, taking its total patent count to 800+: • Expanded the STL Neuralis portfolio with Pre-Terminated Fibre Trunk Assemblies (48F–6,912F), designed to power hyperscale data centres. • Launched a plenum-rated fibre trunk for AI data centre connectivity. • Launched a new advanced FTTH solution, CONCAT, after successfully completing field trials on the networks of one of the largest telecom service providers in the US. “Q2 FY’27 is our best quarter yet, with the highest revenue and EBITDA in STL’s history. It reflects the strength of demand for AI-ready digital infrastructure” said Ankit Agarwal, MD, STL. “The large multi-year agreements we secured this 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 quarter, along with an open order book of INR 35,274 Cr, give us strong visibility as hyperscalers and telecom operators scale their digital infrastructure and networks.” Financials* Q2 FY’27 Q1 FY’27 Q2 FY’26 (INR Cr) Revenue 2,529 1,910 1,034 EBITDA 846** 397 141 PAT 517 197 4 *All financials are from continued operations **Includes one-time net gain of US tariff refund worth INR 161 Cr. 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 center networks. With manufacturing facilities in North America, Europe and Asia, we deliver our solutions in more than 100 countries. Data center & 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 304504 [Showing first 8,000 characters — download PDF for full document]