Subex Ltd — Capital/Financing Update 2025

Sep 30, 2025

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September 30, 2025

BSE Limited

Phiroze Jeejeebhoy Towers Dalal Street, Mumbai- 400 001 BSE Scrip Code: 532348

National Stock Exchange of India Limited Exchange Plaza, 5th Floor, Plot no. C/l G Block, Bandra-Kurla Complex Bandra (E), Mumbai - 400 051 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 a Leading APAC Communications Service Provider extends partnership with Subex for an additional 5 years. 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 Digitally signed by RAMU AKKILI AKKILI Date: 2025.09.30 15:48:40 +05'30' Ramu Akkili Company Secretary & Compliance Officer

Encl: as above

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Annexure- A

SI. No.	Particulars	Details
1.	Name of the entity awarding the order(s)/contract(s);	Leading APAC Communications Service Provider extends partnership with Subex for an additional 5 years
2.	Significant terms and conditions of order(s)/contract(s) awarded in brief;	The deal is worth of USD 5.60 million to deliver enhanced Revenue Assurance and Fraud Management (RAFM) capabilities.
3.	Whether order(s) / contract(s) have been awarded by domestic/ international entity;	International Entity
4.	Nature of order(s) / contract(s);	To deliver enhanced Revenue Assurance and Fraud Management (RAFM) capabilities.
5.	Time period by which the order(s)/contract(s) is to be executed	Contract spanning over a period of 5 years
6.	Broad consideration or size of the order(s)/contract(s);	USD 5.60 million
7.	Whether the promoter/ promoter group / group companies have any interest in the entity that awarded the order(s)/contract(s)? If yes, nature of interest and details thereof	No
8.	Whether the order(s)/contract(s) would fall within related party transactions? If yes, whether the same is done at “arm’s length	No

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Leading APAC Communications Service Provider extends partnership with Subex for an additional 5 years

Bengaluru, India [September 30, 2025] : Subex , a global leader in AI-native telecom solutions, in collaboration with its regional systems-integration partner, has extended its long-standing partnership with a leading APAC communications service provider (CSP) for another five years. The deal is worth USD 5.60 million. Building on a proven track record, the renewed engagement will deliver enhanced Revenue Assurance and Fraud Management (RAFM) capabilities to protect against revenue leakages and fraud across the operator’s mobile and fixed-broadband services.

Serving 150+ million mobile and 10+ million fixed-broadband subscribers, the operator plays a pivotal role in powering the region’s digital economy and nationwide connectivity.

Subex’s solutions were initially deployed in early 2020 to strengthen revenue assurance and fraud prevention across the operator’s mobility business. In 2023, coverage expanded to the operator’s fixed-broadband portfolio, ensuring end-to-end revenue protection across both mobile and fixedbroadband lines of business.

The five-year renewal extends Managed Services program and introduces an additional specialized Professional Services program to help organization unlock greater ROI from the RAFM platform, starting with a technical modernization effort that positions the platform for longterm success.

Together, these initiatives will accelerate detection and resolution, curb revenue risk, and fortify operational resilience across the expanding portfolio, positioning the operator to supercharge revenue protection, sharpen compliance, and elevate customer experience.

Nisha Dutt, MD & CEO, Subex , said:

“We’re thrilled to extend this strategic partnership. Over the past five years, our revenue assurance and fraud management solutions, delivered alongside trusted managed services, have created a meaningful impact.

This additional 5 years renewal highlights our shared commitment to strengthening revenue protection, accelerating time-to-resolution, and driving operational excellence as the region’s digital economy continues to scale.”

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About Subex

Subex is a telecom AI solutions company enabling Communications Service Providers (CSPs) across the globe to deliver connected experiences to their customers. Founded in 1994, Subex brings over 30 years of expertise in helping CSPs maximize revenue and profitability. With a proven expertise in business optimization and analytics, Subex is at the forefront of leveraging AI to build intelligent connected ecosystems for its customers.

Through their HyperSense line of offerings, Subex empowers Communications Service Providers to make faster, better decisions by leveraging AI across the data value chain. Subex’s award-winning portfolio encompasses Business Assurance, Fraud Management, and Wholesale Revenue Management, empowering CSPs to mitigate risk, combat fraud, and safeguard profitability.

Additionally, Subex delivers scalable Managed Services and expert Business Consulting solutions.

Subex has more than 300 installations across 100+ countries. In case of any media queries, please reach out to:

Swagata Bhar Product & Communications Specialist Swagata.bhar@subex.com

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