Please find enclosed herewith intimation for closure of trading window for the purpose of Financial Results for the quarter and half year ended September 30, 2026

Telephone: +91 22 6661 7272 | Email: info.india@blackbox.com BBOX/SD/SE/2026/87 September 25, 2026 Corporate Relationship Department Corporate Relationship Department Bombay Stock Exchange Limited The National Stock Exchange of India Limited P.J. Tower, Dalal Street, Exchange Plaza, Bandra Kurla Complex, Fort, Mumbai 400001 Bandra East, Mumbai 400051 Subject: Closure of Trading Window Ref.: Scrip Code: BSE: 500463/NSE: BBOX Dear Sir/Madam, This is to inform you that as per the applicable provisions of SEBI (Prohibition of Insider Trading) Regulations, 2015 (“PIT Regulations”) as amended from time to time and as per the Code of Conduct of the Company adopted under the said Regulations (“the Code”), the trading window for dealing in the securities of the Company by insiders/designated persons and their immediate relatives will remain closed w.e.f. October 1, 2026 for the purpose of Financial Results for the quarter and half year ended September 30, 2026 and shall reopen only on completion of 48 hours from the declaration of the said Financial Results. Yours Faithfully, For Black Box Limited Aditya Goswami Company Secretary & Compliance Officer BLACK BOX LIMITED Registered Office: 501, 5th Floor, Building No. 9, Airoli Knowledge Park, MIDC Industrial Area, Airoli, Navi Mumbai 400 708, India BLACKBOX.COM | CIN: L32200MH1986PLC040652 | Tel: +91 22 6661 7272