Trading window closure for the Quarter ended 30th September 2026

To 24th September 2026 Listing Department Listing Department BSE Limited National Stock Exchange of India Limited 25th Floor, P. J. Towers, Exchange Plaza, C-1, Block G, Dalal Street, Bandra Kurla Complex, Bandra East, Mumbai – 400 001. Mumbai – 400 051. Scrip Code: 505368 Scrip Code: SEMAC Dear Sir / Madam, Sub: Closure of Trading Window. In compliance with the SEBI (Prohibition of Insider Trading) Regulations, 2015 and in accordance with the Code of Conduct for Prevention of Insider Trading of the Company, the trading window for dealing in securities of the Company for the Designated Persons and their Immediate Relatives will remain closed with effect from 1st October 2026 till 48 hours after the declaration of Unaudited Financial Results of the Company for the Quarter and year ending on 30th September 2026. Kindly take the above information in your record. Thanking You, Sincerely, For Semac Construction Limited Aakriti Gupta Company Secretary and Compliance Officer Semac Construction Ltd. Corporate Identity Number Registered Office: Semac Construction Ltd. (Formerly Known as Semac Consultants L42900TZ1977PLC000780 Pollachi Road, Malumachampatti. Limited.) ISO 9001 : 2015 Coimbatore - 641 021. Plot No. 505, 3rd Floor, Udyog Vihar, Phase – III, Tel : + 91 422 2610851 Gurugram, Fax : + 91 442 6655199 Haryana – 122016, India Website: www.semacconstruction.com Email: compliance.officer@semacconsultants.com Gurugram I Bengaluru I Navi Mumbai I Muscat