Certificate under SEBI (Depositories and Participants) Regulations, 2018

07th October, 2026 To, To, BSE Limited, National Stock Exchange of India Limited, 1st Floor, Phiroze Jeejeebhoy Towers, Exchange Plaza, C-1, BLOCK G, Dalal Street, Bandra-Kurla Complex, Bandra (E) Mumbai - 400001 Mumbai - 400051 Script Code: 540061 Symbol: BIGBLOC ISIN: INE412U01025 ISIN: INE412U01025 Subject: Submission of Certificate under Regulation 74(5) of Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018 for Quarter ended 30th September, 2026 Dear Sir/Madam, In pursuant to Regulation 74(5) of the SEBI (Depositories and Participants) Regulations, 2018, we herewith enclosed copy of Certificate received from Adroit Corporate Services Private Limited, Registrar and Share Transfer Agent of the Company for the Quarter ended 30th September, 2026. You are requested to kindly take the same on your records Thanking you, Yours Faithfully, For Bigbloc Construction Limited Mohit Narayan Saboo Director and CFO DIN: 02357431 Encl: As above adroit CORPORATE SERVICES PAT. LTD 03 October 2026 BIGBLOC CONSTRUCTION LIMITED-FV RS2/- OFFICE NO. 908, 9TH FLOOR, RAJHANS MONTESSA MAGDALLASURAT GUJARAT 395007 Subject: Confirmation Certificate in the matter of 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 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 exchanges 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 regist-— ered owner within 15 days. We request you to kindly take note of the above in your records. Thanking you, Yours faithfully, For Adroit Corporate Services Pvt. Ltd. Authorized Signatory. 19-20 Jaferbhoy Industrial Estate, Makwana Road, Marol Naka, Andheri (E), Mumbai, Maharashtra, 400 059. Tel: 022 - 4227 0400, 2859 4060. Fax: 2850 3748. Email: info@adroitcorporate.com CIN: U67190MH1994PTC079160