Trading Window Closure Notice attached

24th September, 2026 To, To, BSE Limited, National Stock Exchange of India Limited, Phiroze Jeejeebhoy Towers, Exchange Plaza, C-1, BLOCK G, Dalal Street, Fort Bandra-Kurla Complex, Bandra (E) Mumbai - 400001 Mumbai - 400051 Script Code: 540061 Symbol: BIGBLOC ISIN: INE412U01025 ISIN: INE412U01025 Dear Sir/Madam, Sub: INTIMATION OF CLOSURE OF TRADING WINDOW Ref: SEBI (Prohibition of Insider Trading) Regulations, 2015 We hereby inform that, as per the Company’s Code of Conduct for Regulating, Monitoring, Preventing and Reporting of Trading by Designed Persons and their immediate relatives framed pursuant to the provisions of Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015, the Trading Window for dealing in Equity Shares of the Company by the Designated Persons and their immediate relatives shall remain closed with effect from Thursday, 1st October, 2026 till 48 hours after the declaration of Un-audited Financial Results of the Company for the Quarter and Period ending 30th September, 2026. During the aforesaid closed trading window period, the Employees, Directors, Key Managerial Personnel, Designated Persons and their immediate relatives shall not trade in Company's Equity Shares. The date of Board Meeting of the Company for consideration and declaration of the Un-audited Financial Results of the Company for the Quarter and Period ending 30th September, 2026 will be intimated later. Kindly take the same on your records. Yours Faithfully, For BIGBLOC CONSTRUCTION LIMITED MOHIT NARAYAN SABOO DIRECTOR AND CFO DIN: 02357431