Press Release

Date: October 26, 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 Secures INR 973 crores Order for Base Bleed Units of 155mm Artillery Ammunition” 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 Secures INR 973 crores Order for Base Bleed Units of 155mm Artillery Ammunition Multi-Year order strengthens Sigma’s position in the artillery ammunition manufacturing ecosystem and advances its strategy of vertical integration Hyderabad, October 26, 2026: Sigma Advanced Systems Limited (“Sigma”) has secured an order valued at USD 102.23 million (approx. INR 973 Cr) for the manufacture and supply of Base Bleed (BB) Units for a NATO customer, with execution scheduled over a period of 12 months. The order marks a significant milestone in the company’s strategy to expand its capabilities across the 155 mm artillery ammunition manufacturing value chain. As Sigma continues to strengthen its defence manufacturing capabilities, the addition of Base Bleed Units builds on its existing capabilities in 155 mm artillery shells and fuzes. This progression reflects the company’s strategy to deepen its manufacturing expertise, expand its product portfolio and develop a more integrated offering for the global artillery ammunition market. A Base Bleed Unit is a specialised ammunition component designed to improve the aerodynamic performance of artillery projectiles and extend their effective range. Integrated into the rear section of an artillery shell, the unit generates a controlled flow of gas during flight, reducing the aerodynamic drag caused by the low-pressure region behind the projectile. Base Bleed technology is widely used in modern 155 mm artillery ammunition and plays an important role in enhancing the range and operational effectiveness of long-range artillery systems. Strategic Significance The order strengthens Sigma’s position within the artillery ammunition manufacturing ecosystem and represents another step towards establishing comprehensive in-house manufacturing capabilities for advanced 155 mm artillery ammunition. With capabilities spanning artillery shells, fuzes and Base Bleed Units, Sigma is strategically positioned to develop and integrate key components of complete 155 mm artillery rounds. This integrated approach is expected to reduce dependence on external suppliers, strengthen supply-chain control and enhance the company’s ability to offer comprehensive ammunition solutions. The development also reinforces Sigma’s commitment to vertical integration and indigenous defence manufacturing, in line with the Government of India’s Make in India initiative. By expanding its capabilities across complementary ammunition components, the company is positioning itself to address growing domestic and international demand for advanced artillery ammunition. Sunil Kalidindi, CEO and Executive Director, Sigma Advanced Systems Limited, said: “In defence manufacturing, customer confidence is built on consistent execution, reliable delivery and the ability to scale. The fact that customers continue to place repeat orders with us reflects the trust we have earned by meeting our commitments on previous programmes. It also demonstrates that customers view Sigma as a dependable manufacturing partner, rather than an execution risk. As we deepen our capabilities across artillery shells, fuzes and Base Bleed Units, we are strengthening our position as a natural outsourcing partner for customers seeking reliable, integrated manufacturing capabilities. This order further reinforces our commitment to vertical integration, indigenous manufacturing and delivering comprehensive artillery ammunition solutions for domestic and international markets.” About Sigma Advanced Systems Limited Sigma Advanced Systems Limited is an Indian aerospace and defence precision components manufacturer with a growing international footprint. The company designs, develops and manufactures mission-critical systems across avionics, naval systems, radars, communication systems, munitions, aero-engine components and aerostructures, supported by its in-house Build-to-Spec engineering capability. Through its UK subsidiary, Nasmyth, Sigma has established a strong presence in the global aerospace and defence supply chain, producing complex precision products to international standards. Listed on the BSE and NSE, Sigma’s strategy is centred on deepening relationships with leading global OEMs, building long-term programme visibility and leveraging its integrated India and UK manufacturing base to deliver quality and scale. Media Contact Nirav Upadhyay | +91 99206 25163