We wish to inform you that the Company has entered into a Memorandum of Understanding dated 6th October 2026 for share purchase with one of the shareholder of Maxim i.e., Samvik Power Private Limited.

Date: 06th October 2026 To, To, Department of Corporate Services The Secretary, BSE Limited The Calcutta Stock Exchange Limited P.J. Towers, Dalal Street, 7, Lyons Range, Mumbai- 400 001 Kolkata- 700 001 Scrip Code: 533285 Scrip Code: 028393 Sub: Disclosure under Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements), Regulations 2015 - Update in regard to investment in Maxim Industries Private Limited & execution of Shareholders’ Agreement (Maxim Industries Private Limited) Dear Sir/Madam, This is with reference to our earlier intimation dated 3rd June 2026 & 30th June 2026 regarding the investment in Maxim Industries Private Limited & execution of Shareholders’ Agreement with Maxim Industries Private Limited (“Maxim”) and other shareholders of Maxim Industries Private Limited respectively. We wish to inform you of further development that the Company has entered into a Memorandum of Understanding (“Agreement”) dated 6th October 2026 for Share Purchase with one of the Shareholder of Maxim i.e., Samvik Power Private Limited. Pursuant to completion of such purchase, the company’s equity stake shall increase from 29% to 45% in Maxim Industries Private Limited. The disclosure as required under Schedule III of the SEBI Listing Regulations, 2015, read with SEBI Circular No. SEBI/HO/CFD/PoD2/CIR/P/0155 dated 11th November, 2024 is attached herewith and marked as Annexure A. This is for your information and record. Thanking You, For RDB Infrastructure and Power Limited (Formerly known as RDB Realty & Infrastructure Limited) Shubham Vaidya Managing Director (DIN: 11294349) ANNEXURE- A Disclosure in terms of Regulation 30 of SEBI Listing Regulations read with SEBI Circular No. SEBI/HO/CFD/PoD2/CIR/P/0155 dated 11th November, 2024 Sr. Details of events that need to be Information of such event(s) No. provided 1. Name(s) of parties with whom the 1. RDB Infrastructure and Power Limited agreement is entered (Purchaser) 2. Samvik Power Private Limited (Seller) 2. Purpose of entering into the To increase the equity stake in Maxim Industries agreement Private Limited. 3. Whether the said parties are related Not Applicable to promoter/promoter group/ group companies in any manner. If yes, nature of relationship; 4. Whether the transaction would fall Not Applicable within related party transactions? If yes, whether the same is done at “arm’s length” 5. Brief details of any governmental or Not Applicable regulatory approvals required for the acquisition; 6. Indicative time period for Upon the completion of share transfer and payment of completion of the acquisition; consideration. 7. Consideration- whether cash Cash consideration. consideration or share swap or any other form and details of the same; 8. Cost of acquisition and/or the price at Rs. 2,40,000/- (Rupees Two Lakh Forty Thousand which the shares are acquired; only). 9. Percentage of shareholding / contro l The Company shall hold 45% of the equity stake in acquired and / or number of shares Maxim Industries Private Limited post-acquisition. acquired; 10. Brief background about the entity Not Applicable acquired in terms of products/line of business acquired, date of incorporation, history of last 3 years turnover, country in which the acquired entity has presence and any other significant information (in brief);