Press Release

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.: Media Release Dear Sir/Madam, With reference to the above cited subject, pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirement) Regulations, 2015, please find attached the Press Note with the title: “Sigma Advanced Systems Begins Production at Sri City Aerospace Facility, Replicating UK Manufacturing Capability in India” 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 Officer Sigma Advanced Systems Begins Production at Sri City Aerospace Facility, Replicating UK Manufacturing Capability in India First batch of precision-machined aerospace components manufactured; 75,000 sq ft facility now operational with 100,000 annual machining hours of capacity with the capability to expand to 300,000 AMH. Hyderabad, 10th September 2026 Sigma Advanced Systems today announced that its dedicated aerospace manufacturing facility at Sri City, Andhra Pradesh, has moved from build-out into active production, completing the transition from ground- breaking to production in a record eight months. The facility's first batch of precision-machined aerospace components have been manufactured and shipped to Sigma UK where they are undergoing final verification ahead of formal delivery to the customer. The Sri City operation has completed the initial stages of the source-change approval process with Rolls-Royce Aerospace. The dedicated aerospace manufacturing facility is being developed at Sri City across a larger 500,000 sq ft campus. In just eight months, approximately 75,000 sq ft has been brought into operation, already providing 100,000 machining hours of annual production capacity with this first facility budgeted to reach a production capacity of nearly 300,000 annual machining hours. The facility is being developed to replicate Sigma UK’s established aerospace manufacturing capability in India, progressively establishing manufacturing capability in India alongside Sigma UK’s operations. The remaining campus will be operational in the next 12 months, to add further manufacturing capacity and aerospace-critical processes. Once these capabilities are fully operational, approximately 70% of the manufacturing process is expected to be undertaken in India. This facility will have all the capabilities and scale to support future acquisitions. Sunil Kalidindi, Chief Executive Officer and Executive Director, Sigma Advanced Systems, said, “Sri City is an important milestone in Sigma's evolution as a global aerospace manufacturing partner. In just eight months, we have taken a greenfield facility from ground-breaking to production and begun manufacturing aerospace components in India to the standards required by global aerospace programmes. “Our objective is not simply to add machining capacity in India, but to replicate the manufacturing capabilities we have in the UK and progressively bring a larger part of the aerospace manufacturing value chain into India. With our first batch of components now manufactured, 100,000 machining hours of annual capacity already operational with the ability to scale to nearly 300,000 machining hours, the facility designed to scale to 500,000 sq ft, Sri City facility will become an important part of Sigma's global manufacturing platform and expected to drive double digit EBITA expansion.” Sri City was selected for its ability to support rapid capability development and long-term manufacturing scale, together with access to major international logistics gateways. Its connectivity to four major ports provides efficient connectivity for the facility's export-oriented operations. Sigma will also develop specialised aerospace manufacturing skills through on-campus training and capability development. Over the next two to three years, Sigma expects the Sri City operation to employ more than 500 people, creating specialised opportunities across precision manufacturing complex fabrications, specialised welding, engineering, and aerospace process capabilities. The Sri City facility forms part of Sigma's broader strategy to establish a multi-site aerospace manufacturing footprint across India and the UK, with complementary capabilities across its operations in both countries. Through its UK subsidiaries, Nasmyth and Bromford, Sigma has established a presence in the global aerospace supply chain, producing complex precision solutions for demanding manufacturing programmes for global OEM customers. With production now underway, Sigma will continue to expand the Sri City facility, commission additional aerospace-critical processes, progress NADCAP accreditation and increase the proportion of manufacturing undertaken in India. About Sigma Advanced Systems Sigma Advanced Systems Limited, listed on the BSE and NSE, is an Indian aerospace and defence engineering company with a growing international footprint. The company designs, develops and manufactures mission-critical systems across aerospace, avionics, naval systems, radars and communication systems, built on its in-house Build-to-Spec engineering capability. Through its UK subsidiaries, Nasmyth and Bromford, Sigma has established a strong presence in the global aerospace supply chain, producing complex precision solutions for demanding manufacturing programmes for global OEM customers. For further information, please contact: Nirav Upadhyay | Mobile: 9920625163