Please find as attached

SEAMEC LIMITED A member of MMG l'flJGV,.WAJ..GROJP Regd. Office: A-901-905, 9th Floor, 215 Atrium, Andheri Kurla Road, Andheri (East), Mumbai 400 093, India Tel.: +91-22-6694 1800 • Fax: +91-22-6694 1818 • E-mail : contact@seamec.in • CIN : L63032MH1986PLC154910 SEAMEC/BSE&NSE/SMO/TRADINDWINDOW/3009/2026 September 30, 2026 Corporate Relations Department The Manager Listing Department BSE Limited National Stock Exchange of India Limited Phirojee Jeejeebhoy Towers, Exchange Plaza, Plot No. C/1, G Block, Dalal Street, Bandra-Kurla Complex, Bandra (East) Mumbai – 400001 Mumbai - 400051 Scrip Code: 526807 Trading Symbol: SEAMECLTD Sub: Closure of Trading Window Dear Sir / Madam, This is to inform that pursuant to the provisions of the Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015 (amendment thereto) and in terms of the Company's Code of Conduct to Regulate, Monitor and Report Trading by Designated Persons - Prevention of Insider Trading, the Trading Window for dealing in shares of the Company will remain closed for Designated Persons and their immediate relatives with effect from 1st October, 2026 upto 48 hours after the declaration and dissemination of the Un-Audited Standalone and Consolidated Financial Results for the Quarter and Six Months period ended September 30, 2026. We request you to kindly take the above on your records. Thanking you, Yours Faithfully, For SEAMEC LIMITED S.N. Mohanty President – Corporate Affairs, Legal and Company Secretary Please visit us at: www.seamec.in - Q Q CONTRACTOR MEMBER GIMCA ~ MGMTSYS MGMlSYS 1SO9001:2015 1SO14001:2015 1SO4SO0U018 International Marine Contractors Association Certified by IRQS Av AC0 71 Certified by IRQS AvA C07 1 Certified by IRQS OHSMS 007