Press Release dated September 28, 2026, titled "ARIS Increases Stake in High-Growth Subsidiary Buildmex-Infra to 92%"

September 28, 2026 To To The Compliance Manager The Manager, Listing Department BSE Limited National Stock Exchange of India Ltd Corporate Relationship Dept., Exchange Plaza, Plot No. C/1, G Block, Phiroze Jeejeebhoy Towers, Bandra-Kurla Complex, Bandra (East), Dalal Street, Mumbai 400001. Mumbai 400 051. Scrip Code: 544419 Symbol: ARIS Subject: Press Release – Intimation under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”) Dear Sir/Madam, Pursuant to the provisions of Regulation 30 of the SEBI Listing Regulations, please find enclosed herewith Press Release dated September 28, 2026, titled “ARIS Increases Stake in High-Growth Subsidiary Buildmex-Infra to 92%” The above Press Release will also be available on the Company’s website at https://aris.in/pages/investor-relations-disclosures Kindly take the same on record. Thanking you, Yours faithfully, For Arisinfra Solutions Limited Bhavik Jayesh Khara Whole Time Director & CFO DIN: 09095925 Place: Mumbai Encl.: As mentioned above ARIS Increases Stake in High-Growth Subsidiary Buildmex-Infra to 92% Strategic move deepens ownership in a business that has grown revenue ~10x in two years Mumbai, September 28, 2026: Arisinfra Solutions Limited (NSE: ARIS | BSE: 544419) today announced that it will acquire an additional 16% stake in its material subsidiary, Buildmex- Infra Private Limited (BIPL), taking its total holding to 92%. The acquisition of 16,000 equity shares is for a consideration of ₹60 crore and is expected to be completed by September 30, 2026. BIPL procures, trades, and distributes construction materials for infrastructure and real estate projects. It has become one of the fastest-growing businesses in the Arisinfra group. Its revenue rose from ₹17.93 crore in FY24 to ₹70.36 crore in FY25 and ₹179.03 crore in FY26, roughly a tenfold increase in two years. The increased stake gives Arisinfra a larger share of BIPL's economic value at an early point in its growth, and strengthens alignment across the Group's materials platform. In parallel, the Company expects its trade deposits and advances to reduce by a corresponding ₹60 crore, so the acquisition will not draw down the Company's overall cash position. Ronak Morbia, Chairman & Managing Director, Arisinfra Solutions Limited, said: "Buildmex has shown what our model can do at scale. Increasing our ownership now is a deliberate, long-term decision. We see significant headroom for growth and margin expansion in this business, and we want our shareholders to capture more of that value. The transaction has been structured thoughtfully, so it strengthens our position without affecting our ability to invest in growth." The transaction is not a related party transaction. The shares are being acquired from BIPL's existing minority shareholder. For more information, visit Company Website: www.aris.in Or please contact: Latesh Shah Company Secretary & Compliance Officer Arisinfra Solutions Ltd. Email: cs@aris.in Investor Relations: Valorem Advisors | Contact: Mr. Anuj Sonpal +91-22-49039500 | aris@valoremadvisors.com Investor Kit: https://www.valoremadvisors.com/arisinfra Media Relations: Natasha Gupta/ Meghna Bose Mobile :9811945822/ 8101840962 Email: natasha@storybrews.com/ meghna@storybrews.com Note: Certain statements in this document may be forward-looking statements. Such forward- looking statements are subject to risks and uncertainties like regulatory changes, local political or economic developments, and many other factors that could cause actual results to differ materially from those contemplated by the relevant forward-looking statements. Further, past performance is not necessarily indicative of future results. Given these risks, uncertainties and other risk factors, viewers are cautioned not to place undue reliance on these forward-looking statements. The Company will not be in any way responsible for any action taken based on such statements and undertakes no obligation to publicly update these forward-looking statements to reflect subsequent events or circumstance.