Shareholders meeting

To, Date: September 10, 2026 BSE Limited National Stock Exchange of India Limited Phiroze JeeJee Bhoy Towers Exchange Plaza Dalal Street, Fort Bandra-Kurla Complex, Bandra(E) Mumbai 400001 Mumbai 400051 Scrip Code: 532408 Symbol: SIGMAADV Sub: Notice of the 26th Annual General Meeting (“AGM”) and Annual Report for the Financial Year 2025-26 pursuant to Regulation 30 and 34 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015. Pursuant to Regulation 30 and 34 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015, please find enclosed the Notice convening the 26th AGM of the Members of Sigma Advanced Systems Limited (“the Company”) and the Annual Report for Financial Year 2025-26. The 26th AGM is scheduled to be held on Wednesday September 30, 2026, at 10:00 A.M (IST) through Video Conference/ Other Audio-Visual Means (“VC/OAVM”). The Annual Report containing the Notice of the AGM has been uploaded on the website of the Company at https://sigmaadvsys.com/wp-content/uploads/2026/09/SigmaAnnual-ReportFY2025-26.pdf. You are requested to kindly take the above information on record. Thanking you, Yours faithfully, For Sigma Advanced Systems Limited (Formerly Megasoft Limited) Krishna Chaitanya Sadhu Company Secretary & Compliance Office Engineered for a New Era From precision engineering to mission-critical systems. From India to the world. SIGMA ADVANCED SYSTEMS | ANNUAL REPORT 2025-26 Forward-looking statement Contents Certain statements in the Annual Report of Sigma Advanced Systems Limited for CORPORATE OVERVIEW FY 25-26 constitute ‘forward-looking statements’, which involve known and Corporate Snapshot 04 unknown risks and opportunities, other Our Subsidiaries 08 uncertainties, and important factors that Our Comprehensive could turn out to be materially different Product Portfolio following the publication of actual results. Our Value Chain 13 These forward-looking statements speak How We Grew Our Business in FY 25-26 15 only as of the date of this document. The company undertakes no obligation to update Our CEO’s Message 16 publicly, or release any revisions, to these ‘Supercycle’: The Structural Forces forward-looking statements, to reflect events Reshaping Aerospace & Defence or circumstances after the date of this ‘Platform’: The Word That Explains How document, or to reflect the occurrence of Sigma Participates anticipated events. We have tried, wherever ‘Mission-critical’: The Two Words That possible, to identify such statements by using Define Our Customer Relationships words such as ‘estimates’, ‘expects’, ‘projects’, ‘Integrated’: The Operative Word At Our ‘intends’, ‘plans’, ‘believes’ and words of similar Company 32 substance in connection with any discussion Business Enablers 34 of future performance. We cannot guarantee Strategic Priorities 40 that these forward-looking statements will be realized, although we believe we have been STATUTORY REPORTS prudent in our assumptions. Director’s Report 42 Corporate Governance Report 66 Management Discussion and Analysis 83 FINANCIAL STATEMENTS Standalone Financial Statements 97 Consolidated Financial Statements 149 Notice 202 Introduction to this Annual Report Aerospace and Defence industry is entering an unprecedented period when prospective needs and trends are being reshaped by several global and domestic forces – all at once. For India, this is an opportunity to become an important manufacturing and engineering centre for a world seeking trusted alternatives, deeper capacity and resilient supply chains. The company has arrived at this moment with a uniquely relevant combination of capabilities. Sigma is not attempting to build every capability from scratch. It has assembled technology, manufacturing, customer relationships and market access where they can reinforce one another. The possibility: Moving from isolated capabilities to a connected platform - and from participating in programmes to increasing its share of them. Sigma Advanced Systems Limited. One of the most differentiated companies at the frontiers of complex aerospace and defence programmes. 2 | Sigma Advanced Systems Company Overview Statutory Reports Financial Statements Helping customers move from requirement to reality - with engineering that is built for the mission, not merely the specification. Making complex aerospace and defence programmes more dependable through precision, qualification and disciplined execution. Bringing more of the world’s critical manufacturing capability to India - without compromising global standards. Turning decades of engineering experience into technologies and systems that help marquee customers solve harder problems. Strengthening supply-chain resilience by giving global programmes a capable, scalable manufacturing partner across two countries. Building capabilities that serve not only today’s platforms, but the next generation of aerospace and defence. Engineered for a New Era. Annual Report 2025-26 | 3 Corporate snapshot What makes Sigma Advanced Systems Limited distinctive is its positioning. The company is an intersection of engineering depth, mission-critical technology, and a rapidly expanding global aerospace and defence opportunity. Sigma is a Tier-1 player in products, sub-systems and components, bringing together research and development, precision manufacturing and system-level capabilities across India and the UK. Its three decade-plus defence experience is combined with a growing presence in global aerospace programmes. More than 90% of the company’s order book is international, with contracts extending up to eight years and a dual India–UK manufacturing footprint. 4 | Sigma Advanced Systems Company Overview Statutory Reports Financial Statements Uncompromising Relentless Absolute Continuous Global reach, Values quality innovation integrity advancement local expertise Our pedigree experience across aerospace and defence. Today, its experience Our Three decades of engineering spans aerospace, with precision experience manufacturing capabilities for Mission Founded in Hyderabad in 1994 complex aerospace components by Mr. Cheemarla Damodar and structures, alongside expertise solutions that set Reddy, Whole Time Director, India in avionics, UAVs, radar and Operations, and Mr. Sanjay Pukalay, electronic systems, missiles, naval new benchmarks President, Defense Division, Sigma applications, counter-drone systems for the industry brings more than 30 years of and electronic warfare. worldwide. Annual Report 2025-26 | 5 Our footprint Our capabilities Two countries. Eight locations. One global From design to delivery. Built around what operating footprint. customers need. Sigma operates across India and the UK, with more than Sigma combines Build-to-Spec and Build-to-Print 300,000 sq. ft. of manufacturing infrastructure and over capabilities to deliver tailored solutions aligned with 700 FTEs. Its India operations in Hyderabad, Bengaluru specific customer requirements. Its R&D capabilities and Sri City provide capabilities across precision span software and hardware design, supported machining, fabrication, assemblies and specialised by experience across developmental programmes aerospace and defence manufacturing. Across six UK and the ability to create customised solutions for locations, Sigma provides precision machining, complex evolving industry needs. Its manufacturing capabilities fabrication, welding, metal treatments and assembly support production requirements under Build-to-Print capabilities for demanding aerospace and defence engagements, enabling the company to deliver high- programmes. quality products with consistency and efficiency. Our market presence Listed in India. Building for the world. Sigma’s equity shares are listed on the Bombay Stock Exchange and the National Stock Exchange. 6 | Sigma Advanced Systems Company Overview Statutory Reports Financial Statements Our talent Thi [Showing first 8,000 characters — download PDF for full document]