Press Release

Ref. RIR/SEC/13923/2026 11th August, 2026 Bombay Stock Exchange Limited The Manager – Listing Department Corporate Relationship Department, National Stock Exchange of India Ltd., 1st Floor, Rotunda Building, Exchange Plaza, C-1, G-Block, P. J. Towers, Dalal Street, Bandra Kurla Complex, Bandra (East), Mumbai-400001 Mumbai - 400051 BSE SCRIP Code : 517035 NSE Symbol : RIR Subject.: Submission of Press/ Earnings Release for Q1 FY27 Results Dear Sir/Madam, With reference to the above subject, please find enclosed herewith Press/ Earnings Release on the subject “RIR Power Electronics Limited Announces Q1 FY27 Results.” Kindly take the same on record. Thanking you. Yours faithfully, For RIR POWER ELECTRONICS LIMITED BHAVIN P RAMBHIA COMPANY SECRETARY Encl : a/a Earnings Release | Q1 FY 2027 Earnings Release | Q1 FY 2027 RIR Power Electronics Limited Announces Q1 FY27 Results Mumbai, August 11, 2026: RIR Power Electronics Limited (BSE: 517035, NSE: RIR) yesterday announced its unaudited standalone financial results for the quarter ended June 30, 2026 (Q1 FY27). Standalone Financial Performance for Q1 FY27 (Amount in ₹ crore, except EPS) Performance Indicators Q1 FY27 Q1 FY26 YoY% Q4 FY26 QoQ% Revenue 27.16 21.01 + 29.28% 23.95 + 13.42% Adjusted EBITDA * 4.71 2.89 + 62.87% 2.46 + 90.89% Adjusted EBITDA 17.32% 13.75% + 357 bps 10.29% + 703 bps Margin * PAT 3.14 1.74 + 80.59% 1.39 + 126.07% PAT Margin 11.23% 8.14% + 309 bps 5.55% + 568 bps Basic EPS per share 0.39 0.23 +71.47% 0.17 + 131.99% (Not annualized) (in ₹) *Adjusted EBITDA is before considering ESOP expenses of ₹ 0.72 crs in Q1 FY27 and ₹ 0.37 crs in Q4 FY26 Latest Strategic Developments: • Appointment of Mr. Vivek Patel as the Non – Executive Independent Director: The Company has strengthened its Board with the appointment of Mr. Vivek Patel as an Independent Director. With over a decade of executive leadership experience spanning strategic management and corporate governance, Mr. Patel brings expertise in areas such as institutional governance, policy oversight, budgeting, risk management and long-term strategic planning. • Appointment of Mr. Ankit Shah as the Chief Financial Officer: Mr. Ankit Shah has been elevated and appointed as a Chief Financial Officer, bringing over 15 years of experience across transaction advisory, corporate restructuring, M&A, taxation and regulatory matters. A Chartered Accountant, Mr. Shah has worked with listed companies, multinational corporations and private equity clients across manufacturing, technology, healthcare, pharmaceuticals, logistics and energy. He has been associated with the Company for the past one and a half years as Financial Controller. • Listed on the National Stock Exchange (NSE): The Company commenced trading on the National Stock Exchange on 16 July 2026, marking a significant milestone in the company's growth journey. The NSE listing is expected to enhance liquidity, broaden the investor base, improve price discovery, and strengthen the company's visibility in the capital markets. • Strengthening Semiconductor Innovation: The Company, in collaboration with Silicon University, secured the selection of two research papers at IEEE MWSCAS 2026, reinforcing its commitment to advancing Silicon Carbide (SiC) semiconductor research and fostering industry-academia collaboration for next-generation power electronics applications. Earnings Release | Q1 FY 2027 • Expanding Presence in the Railway Sector: The company showcased its latest railway power electronics solutions at RailTrans Expo 2026. The event further strengthened RIR's engagement with India's rapidly evolving railway infrastructure ecosystem. • Global Business Expansion: Building on its recent momentum, the Company continues to strengthen its international footprint following its first overseas order for 120 units of 125 mm 5kV SCR thyristors, reinforcing the global competitiveness of its semiconductor products. Management Comments: Dr. Harshad Mehta, Non-Executive Chairman, said “The first quarter of FY2026-27 has been a defining period for RIR Power Electronics as we continued to strengthen our position in India's power semiconductor ecosystem. Our successful listing on the National Stock Exchange marks an important milestone in our growth journey, enhancing our visibility among investors while reinforcing our commitment to creating long-term stakeholder value. We remain focused on expanding our advanced semiconductor portfolio, driving innovation in Silicon Carbide (SiC) technologies, and strengthening our presence across strategic sectors such as electric mobility, renewable energy, industrial automation, railways, and power infrastructure. As India's semiconductor and clean energy ecosystems continue to evolve, we are well-positioned to capitalize on emerging opportunities through technology-led growth, operational excellence, and strategic partnerships.” Mr. N Ramesh Kumar, Managing Director and Chief Executive Officer, said “We have started FY27 on a strong note, with revenue growing 29.2% year-on-year to ₹27.16 crore along with an 80.5% growth in PAT, reflects the continued improvement in our operating performance and profitability. Going forward, our focus will remain on sustaining profitable growth while expanding our advanced semiconductor portfolio, particularly in Silicon Carbide technologies, and strengthening our presence across various critical sectors. Our recent NSE listing, first overseas order and growing industry engagement provides a strong platform to expand our market presence. We remain committed to building a globally competitive power semiconductor business through technology, operational excellence and customer-focused execution.” About RIR Power Electronics Limited : RIR Power Electronics Limited (BSE: 517035, NSE: RIR) is a global pioneer in high-power semiconductor solutions, driving innovation and energy efficiency. Its portfolio of high-performance semiconductor devices, assemblies, and energy management systems enables customers to address the evolving demands of modern energy systems. The company's innovative products and solutions empower energy performance at the highest level in both existing and emerging applications. Trusted worldwide for reliability and performance, RIR stands at the forefront of sustainable energy innovation, powering progress, one breakthrough at a time. For more information, visit RIR website at www.rirpowersemi.com. Contact details: Investor relations Abhishek Savant Ketan Netawate Veritas Reputation PR Pvt Ltd Veritas Reputation PR Pvt Ltd abhishek@veritasreputation.com ketan.netawate@veritasreputation.com +91 810 88488 22 +91 88570 92518