Bigbloc Construction Limited — M&A Activity 2025

Oct 15, 2025

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15[th] October, 2025

To, To, BSE Limited , National Stock Exchange of India Phiroze Jeejeebhoy Towers, Dalal Street, Limited , Exchange Plaza, C-1, BLOCK Fort, G, Bandra-Kurla Complex, Bandra (E) Mumbai - 400001 Mumbai - 400051 Script Code: 540061 Symbol: BIGBLOC ISIN: INE412U01025 ISIN:INE412U01025

Dear Sir/Madam,

Subject: Proposal of Merger of Starbigbloc Building Material Limited (Subsidiary Company of the Company) into Bigbloc Building Elements Private Limited (Wholly Owned Subsidiary of the Company)

Dear Sir / Madam,

We wish to inform you that the respective Boards of Starbigbloc Building Material Limited ("Transferor Company") and Bigbloc Building Elements Private Limited ("Transferee Company") have, at their respective meetings held today, i.e., 15th October 2025, with a view of strategic growth, operational efficiency, and enhanced stakeholder value considered the proposal for the merger of both the Companies, subject to obtaining the necessary statutory and regulatory approvals.

Further developments in this matter will be communicated in due course.

Please take the same into records.

Yours Faithfully,

For BIGBLOC CONSTRUCTION LIMITED

Digitally signed by MOHIT MOHIT NARAYAN NARAYAN SABOO SABOO Date: 2025.10.15 15:12:22 +05'30'

MOHIT NARAYAN SABOO

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DIRECTOR & CFO DIN:02357431