Intimation of Compliance-Certificate under Reg. 74(5) of SEBI (DP) Regulations, 2018

® The Corporate Office: T: +91 44 4566 1700 l Waterbase Thapa Holse| 37 Montisth Road www.waterbaseindia.com Limited Egmore | Chennai | 600 008 | India. October 12, 2026 The Manager, Listing Department, BSE Limited, Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai- 400 001 Ref: Scrip Code: 523660 / WATERBASE Dear Sir/Madam, Sub: Certificate under Regulation 74(5) of the SEBI (Depositories and Participants) Regulations, 2018 for the quarter and half year ended September 30, 2026 In compliance with Regulation 74(5) of the SEBI (Depositories and Participants) Regulations, 2018, please find enclosed herewith the certificate received from M/s. Cameo Corporate Services Limited, the Registrar and Share Transfer Agent of the Company, for the quarter and half year ended September 30, 2026. We request you to take the above information on record. For The Waterbase Limited R Sureshkumar Company Secretary Encl: a/a Registered Office / Factory: Ananthapuram Village | T.P. Gudur Mandal | Nellore | Andhra Pradesh | 524 344 T: +9170759 33457 | E: info@waterbaseindia.com | CIN: LOS005AP1987PLCO18436 CAMEO CAMEO CORPORATE SERVICES LIMITED Ref: CAM/2026 05th October, 2026 The Compliance Officer The Waterbase Ltd. 37 Montieth Road Chennai 600008. Dear Sir Subject: Certificate under Regulation 74(5) of Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018 for the quarter ended 30.09.2026. With reference to the above captioned subject, we hereby confirm that the securities received from the depository participants for dematerialisation during the quarter ended 30th September, 2026, were confirmed (accepted/rejected) to the depositories by us and that securities comprised in the said certificates have been listed on the stock exchange where the earlier Issued securities are listed. We hereby also confirm that the security certificates received for dematerialisation have been mutilated and cancelled after due verification by the depository participant and the name of the depositories have been substituted in register of members as the registered owner within stipulated time limit under captioned regulations. Thanking you Yours faithfully For CAMEO CORPORATE SERVICES LIMITED Cj’fimw"\ ASST.MANAGER (SHARES) CIN No:U67120TN1998PLC041613 'Subramanian Building’, No.1, Club House Road, Chennai-600 002. Phone: (D) 044-40020710 / 044-2846 0390, Fax: 044-2846 0129 E-mail: cameo@cameoindia.com Website: www.cameoindia.com