Disclosure of material issue

27th June, 2026 Department of Corporate Relationship National Stock Exchange of India Limited BSE Ltd. Exchange Plaza, C-1, Block G, Phiroze Jeejeebhoy Towers, Bandra Kurla Complex, Dalal Street, Fort, Mumbai – 400 001. Bandra (E), Mumbai – 400051 Scrip Code: 539177 NSE Symbol – AIIL Dear Sir/Madam, Sub: Disclosure under Regulation 30 of the SEBI (Listing obligations and Disclosure Requirements), Regulations, 2015 Pursuant to the provisions of Regulation 30 of SEBI Listing Regulations and email received from Ministry of Corporate Affairs (CRC) on June 27, 2026, we wish to inform you that a Wholly Owned Subsidiary company of Authum Investment & Infrastructure Limited (“Authum”) in the name of “WindCrest Realty Private Limited” under provisions of the Companies Act, 2013 with Corporate Identification Number (CIN) U41000MH2026PTC472858 has been incorporated on June 26, 2026. The disclosures in respect of the said subsidiary, as required under Regulation 30 of the SEBI Listing Regulations, read with Schedule III thereto and the SEBI Circular No. SEBI/HO/49/14/14(7)2025-CFD- POD2/I/3762/2026 dated January 30, 2026 is also attached as Annexure A to this letter. The above is for your information and record. Thank you, For Authum Investment & Infrastructure Limited Dipyanti Jaiswar Company Secretary Encl: As above. Annexure A Disclosure of information pursuant to Regulation 30 of the Securities and Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 read with SEBI Circular No. SEBI/HO/CFD/CFD-PoD-1/P/CIR/2023/123 dated July 13, 2023 Name of the target entity, details in brief such WindCrest Realty Private Limited, a Wholly Owned as size, turnover etc. Subsidiary Company Authorized Share Capital Rs. 10,00,000/- (Rupees Ten Lakhs Only). Paid-up Share Capital: 5,00,000/- (Rupees Five Lakhs Only) Size & Turnover: Not applicable since this is a newly incorporated Company. Whether the acquisition would fall within Being a Wholly Owned Subsidiary, the Company is the related party transaction(s) and whether the related party of Authum Investment & Infrastructure promoter/ promoter group/ group companies Limited (“Company”). have any interest in the entity being acquired? If yes, nature of interest and details thereof Save and except what is mentioned above, the Promoters / and whether the same is done at “arms promoter group / group companies do not have any direct length”. interest in the transaction. Industry to which the entity being acquired Real Estate. belongs. Objects and effects of acquisition (including The Object of this Wholly Owned Subsidiary is to carry but not limited to, disclosure of reasons for out real estate activities interalia including but not limited acquisition of target entity, if its business is to carrying on the business of contractors and builders and outside the main line of business of the listed to purchase, sell, resell, give or take on lease or rent, lay entity). out, develop, construct, build, erect, maintain, alter, extend, enlarge, purchase and sell, pull, down remove replace, improve or develop and to work, maintain, manage and control any buildings, chawls, offices, factories, business complex, mills, foundries, refineries, furnaces, godowns, warehouses, shops, machinery, engines, roadway or other means of transport, sidings bridges, take, water courses etc. Brief details of any governmental or Not applicable regulatory approvals required for the acquisition. Indicative time period for completion of the Not applicable acquisition. Consideration - whether cash consideration or Cash contribution of up to Rs. 5,00,000 being 100% of the share swap or any other form and details of paid-up share capital of the Company. the same. Cost of acquisition or the price at which the shares are acquired. Percentage of shareholding / control acquired 100% and / or number of shares acquired. Brief background about the entity acquired in WindCrest Realty Private Limited is a Wholly Owned terms of products/line of business acquired, Subsidiary company incorporated under the provisions of date of incorporation, history of last 3 years the Companies Act, 2013 on June 26, 2026 under the CIN- turnover, country in which the acquired entity U41000MH2026PTC472858, having its registered office has presence and any other significant in Mumbai, Maharashtra. information (in brief). History and Turnover: Not Applicable as newly incorporated Company. Country of Presence: India