Analysts/Institutional Investor Meet/Con. Call Updates

www.stl.tech July 28, 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 ID - STLTECH Scrip Code - 532374 Sub.: TRANSCRIPT OF EARNINGS CALL - FINANCIAL RESULTS Q1FY27 Dear Sir/Madam, In furtherance of our letter dated July 16, 2026, please find enclosed transcript of earnings call held on July 24, 2026 in respect of Company’s Q1 FY27 financial results. The same is also being hosted on the website of the Company and is available under the tab ‘FINANCIAL RESULTS- INVESTOR EARNINGS TRANSCRIPT’ at: https://stl.tech/wp- content/uploads/2026/07/Transcript-July-24-2026.pdf Kindly take this on record. Thanking 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 Q1 FY27 Earnings Conference Call” July 24, 2026 MANAGEMENT: MR. ANKIT AGARWAL – MANAGING DIRECTOR – STERLITE TECHNOLOGIES LIMITED MR. AJAY JHANJHARI – GROUP CHIEF FINANCIAL OFFICER – STERLITE TECHNOLOGIES LIMITED MR. RAHUL DARAK – HEAD, INVESTOR RELATIONS – STERLITE TECHNOLOGIES LIMITED Page 1 of 18 Sterlite Technologies Limited July 24, 2026 Moderator: Ladies and gentlemen, good day, and welcome to Sterlite Technologies Limited Q1 FY27 Earnings Conference Call. As a reminder, all participant lines will be in the listen-only mode and there will be an opportunity for you to ask questions after the management's presentation concludes. Please note that this conference call is being recorded. I now hand the conference over to Mr. Rahul Darak, Head of Investor Relations. Over to you, sir. Rahul Darak: Thank you. Good day, everyone, and welcome to STL's Q1 FY27 Earnings Call. To take us through the results and answer your questions today, we have with us STL's senior management represented by Mr. Ankit Agarwal, Managing Director; and Mr. Ajay Jhanjhari, Group CFO. Before we proceed with the call, let me remind you that the discussion today may contain forward-looking statements that may involve known or unknown risks, uncertainties and other factors. It must be viewed in conjunction with our business risks that could cause future results, performance or achievements to differ significantly from what is expressed or implied in such forward-looking statements. Please note that we have uploaded the results and earnings call presentation on STL's website, and the same is available on the stock exchanges. We'll start the call with a brief overview of the quarter gone past and then conduct the Q&A session. With that said, I will now hand over the call to our Managing Director, Mr. Ankit Agarwal. Ankit Agarwal: Thank you, Rahul. Good day, everyone. Thank you for joining STL's Q1 FY27 Earnings Call. I'll begin by highlighting the key takeaways from our investor presentation, and then Ajay will walk through the financials. STL is a global leader in digital connectivity infrastructure, serving data centers, telcos, citizen networks and large enterprises. Our optical connectivity solutions spans fiber to fiber cable, specialty cables and connectivity solutions. We are India's number 1 end-to-end optical manufacturer with 9% optical cable market share outside of China. With over 30 years of leadership, more than 785 patents and 10- plus zero waste to manufacturing facilities worldwide, STL is leading the next wave of global digital infrastructure. At STL, we are amongst the very few companies in the world to have mastered the journey from glass to gigabit. It starts with the purest grade of silicon, which we transform through advanced processes like silicon tetrachloride formation, chemical vapor deposition and high precision sintering to create ultrapure glass preforms, which is the backbone of optical fiber. From there, we draw the highest grade fiber, design high-density cables and develop reliable connectivity products that power data centers and telecom networks worldwide. This full stack integration right from raw material to network deployment gives STL a unique edge in quality, cost efficiency and innovation across the connectivity value chain. This deep integration enables us to engineer next-generation fiber, cable and connectivity solutions that are redefining global connectivity. Our end-to-end innovation from material Page 2 of 18 Sterlite Technologies Limited July 24, 2026 science to smart optical systems help global network builders create faster, denser and more reliable networks for the AI era. As we step into FY27, our core strategic priorities have evolved and are delivering tangible results. Beyond driving market share and attach rates in our core optical business, we are actively pivoting towards increasing our revenue share from integrated connectivity solutions in partnership with key customers. With data centers emerging as a critical growth engine for the entire industry, we're sharply focused on scaling this segment underpinned with our continued technology leadership. This commercial momentum, paired with our disciplined focus on operational and cost efficiencies will drive margin expansion as we head into the rest of the fiscal year. Moving on, we'll now speak about the industry tailwinds and the growing market opportunity. As you all know, we are at the intersection of 3 powerful multiyear investment cycles, FTTx, Data Centers and 5G/6G networks, creating a strong structural tailwind for optical infrastructure. FTTx is accelerating globally with deployment rising from 151 million fiber kilometers in 2025 to about 171 million fiber kilometers by 2030. In the U.S. alone, more than 140 million homes will be served by fiber by 2030, supported by large government programs like BEAD in the U.S. and BharatNet in India. Data centers are the fastest-growing driver of fiber demand. CRU projects a massive 63% global growth in optical cable demand from this segment in the year 2026 alone, driven by hyperscale expansion and AI workloads. North America installed DC capacity is expected to double from 63 gigawatts in 2025 to 126 gigawatts by 2030. Morgan Stanley Investment Bank has again upgraded their forecast on hyperscaler capex from $765 billion to $805 billion, increasing the TAM of our optical connectivity. Concurrently, the scaling of 5G and 6G networks demand deep network densification with global 5G subscriptions expected to hit 6.4 billion by 2030. India's 5G subscriptions expected to hit 1.1 billion by 2031 and then the global 6G subscriptions forecasted to cross 180 million by the end of 2031, which is about 4 to 5 years away. Together, these 3 cycles are creating a structural multiyear tailwind for fiber and connectivity solutions, positioning STL at the center of the next global digital infrastructure build-out. Next, on Slide 10, you will see how some of the big global telecom and technology giants are aligned in backing optical fiber as the base of digital future across 6G broadband data centers and the AI infrastructure. The takeaway is simple. Fiber remains as the core backbone of all the digital infrastructure coming up. Moving on to Slide 11. It shows how the AI revolution and rapid data center expansion are creating a once-in-a-generation opportunity for optical connectivity. As for McKinsey, a consulting firm, by 2030, 70% of data center demand will be AI-led, driving a sharp increase in capex and infrastructure intensity. Page 3 of 18 Sterlite Technologies Limited July 24, 2026 GPU architectures are rapidly shifting from 400 gig to 800 gig and going all the way to 1.6 terabyte speeds where copper reaches a bandwidth threshold and fiber becomes even more essential, increasing our TAM by 10 billion for optica [Showing first 8,000 characters — download PDF for full document]