Certificate under SEBI (Depositories and Participants) Regulations, 2018

Date: July 6, 2026 The General Manager, The Manager, Listing Department, Listing & Compliance Department, Bombay Stock Exchange Limited, National Stock Exchange of India Limited, Phiroze Jeejeebhoy Towers, Exchange Plaza, Plot no. C/1, G Block, Dalal Street, Bandra Kurla Complex, Mumbai – 400 001 Bandra East, Mumbai – 400 051 Scrip Code: 543669 Scrip Symbol: RUSTOMJEE Subject: Certificate under Regulation 74(5) of SEBI (Depositories and Participants) Regulations, 2018 Dear Sir / Madam, With reference to the captioned subject, please find enclosed a copy of certificate dated July 1, 2026, received from our Registrar & Share Transfer Agent (RTA) i.e. MUFG Intime India Private Limited, in compliance with Regulation 74(5) of SEBI (Depositories and Participants) Regulations, 2018 for the quarter ended on June 30, 2026. Thanking you, Yours faithfully, For Keystone Realtors Limited Bimal K Nanda Company Secretary and Compliance Officer Membership No. A11578 Encl.: as above KEYSTONE REALTORS LIMITED Registered Office : 702, NATRAJ, M. V. Road Junction, Western Express Highway, Andheri (East), Mumbai - 400 069. Tel.: +91 22 6676 6888 | CIN : L45200MH1995PLC094208 | Website: www.rustomjee.com MUFG Intime India Private Limited (Formerly Link Intime India Private Limited) CIN: U67190MH1999PTC118368 Registered Address: C-101, Embassy 247, L.B.S. Marg, Vikhroli (West), Mumbai - 400083. Tel: +91 22 4918 6000 www.in.mpms.mufg.com Date : 01-07-2026 The Compliance Officer/ Company Secretary KEYSTONE REALTORS LIMITED 702, NATRAJ, MV ROAD JUNCTION, WESTERN EXPRESS HIGHWAY, ANDHERI (EAST), MUMBAI, MUMBAI PINCODE : 400069 Sub : Confirmation Certificate under Regulation 74(5) of Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018. Dear Sir/Madam, In reference to the above captioned regulation, we hereby confirm that the securities received from the depository participants for dematerialisation during the quarter ended 30th June 2026, were confirmed (accepted/rejected) to the depositories by us and that securities comprised in the said certificates have been listed on the stock exchanges where the earlier issued securities are listed. We hereby also confirm that the security certificates received for dematerialisation have been confirmed/rejected and the security certificates received were mutilated and cancelled after due verification by the depository participant and the name of the depositories have been substituted in the register of members as the registered owner within the prescribed timelines. We request you to kindly take note of the above in your records. Thanking you, Yours faithfully, For MUFG Intime India Private Limited (Formerly Link Intime India Private Limited) Ashok Shetty Sr. Vice President-Corporate Registry MUFG Intime India Private Limited A part of MUFG Corporate Markets, a division of MUFG Pension & Market Services