Awarding of order(s)/contract(s)

August 21, 2026 BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Exchange Plaza, 5th Floor, Plot no. C/l Dalal Street, G Block, Bandra-Kurla Complex Mumbai- 400 001 Bandra (E), Mumbai - 400 051 BSE Scrip Code: 532348 NSE Symbol: SUBEXLTD Dear Sir/Madam, Sub: Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 Pursuant to Regulation 30 read with Para B of Part A of Schedule III of Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“Listing Regulations”), we wish to inform that Subex has secured a new-logo from a major European open-access fibre operator to deploy the Company’s Partner Ecosystem Management Solutions. This engagement will support the operator in expanding its wholesale business ecosystem, ensuring greater operational efficiency, scalability, and accuracy as network complexity increases. A press release in this regard is also enclosed herewith. The details as required under SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 read with SEBI Master Circular No. SEBI/HO/CFD/PoD2/CIR/P/0155 dated November 11, 2024 are enclosed as “Annexure A”. Kindly take the same on record. Thanking you, Yours faithfully, For Subex Limited Ramu Akkili Company Secretary & Compliance Officer Encl: as above Annexure- A SI. Particulars Details 1. Name of the entity awarding the A new-logo engagement with a major European order(s)/contract(s); open-access fibre operator 2. Significant terms and conditions of The deal is worth Euro 0.6 million. This order(s)/contract(s) awarded in brief; engagement involves deploying Partner Ecosystem Management solutions to help the operator expand its wholesale business ecosystem, while ensuring greater operational efficiency, scalability, and accuracy as network complexity increases 3. Whether order(s) / contract(s) have been International Entity awarded by domestic/ international entity; 4. Nature of order(s) / contract(s); This engagement involves deploying Partner Ecosystem Management solutions to help the operator expand its wholesale business ecosystem, while ensuring greater operational efficiency, scalability, and accuracy as network complexity increases 5. Time period by which the The contract spans over a period of 3 years. order(s)/contract(s) is to be executed 6. Broad consideration or size of the Euro 0.6 million order(s)/contract(s); 7. Whether the promoter/ promoter group / No group companies have any interest in the entity that awarded the order(s)/contract(s)? If yes, nature of interest and details thereof 8. Whether the order(s)/contract(s) would No fall within related party transactions? If yes, whether the same is done at “arm’s length Subex Secures New European Logo for Partner Ecosystem Management Bengaluru, India/ London – August 21, 2026: Subex, a global leader in AI-driven telecom solutions, has secured a new-logo engagement with a major European open-access fibre operator, marking a further step in its continued expansion across the region. Under the three-year agreement, Subex will deploy its Partner Ecosystem Management solution as a fully hosted and managed service. The engagement includes end-to-end operations, professional services, and ongoing support, enabling the operator to manage complex settlement processes without maintaining internal systems. The solution will support the operator in managing an expanding ecosystem of wholesale business ensuring greater operational efficiency, scalability, and accuracy as network complexity increases. Commenting on the engagement Nisha Dutt, MD & CEO, Subex said “Wholesale Business is one of the most demanding settlement environments in telecom and winning a new operator of this scale in Europe reflects the strength of our direction. We’re not just delivering software, we’re operating the Partner Ecosystem Management solution for them, and that is a model we intend to scale across the region.” The win further strengthens Subex’s position in the European wholesale markets and reinforces its track record of enabling operators to manage complex partner ecosystems through managed, outcome-led engagement models. About Subex Subex is a telecom AI solutions company enabling Communications Service Providers (CSPs) across the globe to deliver connected experiences to their customers. With over 30 years of expertise in business optimization and analytics, Subex helps CSPs maximize revenue, reduce leakage, and strengthen operational efficiency. With a winning aspiration of empowering every digital journey to be Fearless, Seamless, and Fraud-Free, Subex enables operators to manage risk, ensure frictionless operations through AI-led automation, and safeguard trust across every interaction. Its portfolio spans Business Assurance, Fraud Management, and Partner Ecosystem Management, helping CSPs reduce revenue leakage, combat emerging fraud, and optimize partner settlements in an AI-native environment. Today, Subex powers over 150 customers across 100+ countries. For any media queries, please contact: Mahima Mishra Brand and Communication Specialist | | mahima.mishra@subex.com www.subex.com Subex Limited Regd. Office : Pritech Park - SEZ, Block-09, 4th Floor, B Wing, Survey No.51 to 64/4, Outer Ring Road, Bellandur Village, Varthur Hobli Mail: info@subex.com Website: www.subex.com