Intimation on Addendum (s) 1 and 2 to the Memorandum of Agreement dated 21st July 2026 with HAL Offshore Limited for delivery of vessel "SEAMEC ANANT"

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/ADDENDUM1&2SEAMECANANT/3108/2026 August 31, 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: Disclosure under Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sir / Madam, Further to our letter no. SEAMEC/BSE&NSE/SMO/MOAFORPURCHASEOFSEAMECANANT/2107/2026 dated 21st July 2026 we write to inform you that the Company has entered into Addendum 1 and Addendum 2 dated 31st August 2026 to the Memorandum of Agreement dated 21st July 2026 for Purchase of Vessel “SEAMEC ANANT” amending the Schedule I and the dates of Notice of Readiness and Cancelling Date, respectively. All other terms of the Memorandum of Agreement dated 21st July 2026 remain unchanged. This is a related party transaction, which has already been intimated to the Exchange. Pursuant to Clause 5 of Para B of Part A of Schedule III of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 read with SEBI circular dated January 30, 2026, we enclose herewith the requisite details of the Addendum (s) in the prescribed Annexure. Date and time of receipt of Information: August 31, 2026 at 17:08 hours. 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 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 ANNEXURE (Clause 5) Sr. No. Description Remarks k) In case of termination or amendment of Memorandum of agreement, listed Addendum 1 & 2 executed on 31st entity shall disclose additional details to the Stock Exchange(S): August, 2026 to the Original Memorandum of Agreement dated 21st July 2026 i) Name of the parties to the Addendum (s); i) Seamec Limited with HAL Offshore Limited ii) Nature of the Addendum (s)t; ii) Addendum 1 and Addendum 2 iii) Date of execution of the Addendum (s); (Normal Course of Business) iv) Details of amendment and impact thereof or reasons of iii) 31st August 2026 termination and impact thereof; iv) Addendum 1 – Amendment to the Schedule I to the MOA dated 21st July 2026 for Documents to be provided by SELLER and BUYER for delivery of the Vessel “SEAMEC ANANT” Addendum 2 – Revision of the date of the Notice of Readiness to September 15, 2026 and Cancelling Date to October 15, 2026. There is no impact. 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