STL Q4FY25: Sterlite Tech net loss narrows to ₹40 crore; Revenue up 25% YoY

Sterlite Technologies Ltd on Friday reported a consolidated net loss of ₹40 crore for the quarter ended March 31, 2025, compared with a net loss of ₹82 crore in the same period last year. Revenue rose to ₹1,052 crore, up 25% year-on-year from ₹843 crore in Q4FY24.

The company’s EBITDA for the quarter stood at ₹146 crore, with EBITDA margins improving to 13.9%, up from 5.2% a year earlier. STL said performance was driven by improved operating leverage in its Optical Networking segment and continued demand from enterprise and data centre clients across key markets.

Quarterly EBITDA rose sharply to ₹146 crore, up from ₹44 crore in the year-ago period, reflecting an EBITDA margin of 13.8%—the company’s highest in six quarters. Full-year EBITDA stood at ₹452 crore, compared with ₹527 crore a year earlier.

STL Digital remained EBITDA-positive for the second straight quarter, supported by steady revenue growth and an expanding order book. The division has built partnerships with more than 40 technology firms and secured over 25 global customers across India and the U.S.

The company also completed the demerger of its Global Services Business during the fiscal year, transitioning it to STL Networks Limited under the brand "Invenia."

Other FY25 highlights include new customer wins across the US, Europe, Australia, the Middle East, and India, including clients such as Archtop Fiber, Connexin, Netomnia, Wyre, Vocus, du Telecom, BharatNet and Vedanta.

STL highlighted continued investments in product innovation, including ultra-thin optical fibre (160-micron and 180-micron), 864F microcables, multicore fibre for quantum communications, silicon photonics, and AI-led data centre solutions. The company filed 76 new patents during the year, bringing its total patent count to 740.

Following the demerger and a qualified institutional placement (QIP), STL’s net debt-to-equity ratio improved to 0.68 from 1.39 a year ago.