Intimation of Letter of Award by Larsen & Toubro Limited to the Consortium of Posh India Offshore Pvt Ltd and SEAMEC Limited for PRP-X project of ONGC

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/LOAL&TPRPX/0711/2026 November 07, 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, We wish to inform you that M/s. Larsen and Toubro Limited (L&T Energy Hydrocarbon Div) has awarded Letter of Award (LOA) no. ONGC/PRPX/LOA/PIOPL-SL/01- Subsea Installation Works for PRP-X Project of ONGC to the Consortium of SEAMEC Limited and Posh India Offshore Private Limited. The lumpsum contract value for SEAMEC’s Scope of Work is USD 26.14 million exclusive of GST. The Work will be completed by May 2027. The project on commencement will be duly intimated. Pursuant to Clause 4 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 in respect of the Letter of Award of M/s. Larsen and Toubro Limited is given in the prescribed ANNEXURE Date and time of receipt of information: November 06, 2026 at 14:02 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 4.2) Sr. No. Description Remarks a) Name(s) of the entity awarding the order(s) / contract (s)/ Letter of M/s. Larsen & Toubro Limited Award (L&T Energy Hydrocarbon Div) b) Significant Terms and conditions of order (s) / contract (s)/ Letter of Work of subsea installation Award awarded in brief associated with pipeline replacement project PRP-X. c) Whether order (s) / contract (s) / Letter of Award have been awarded by Domestic Entity domestic / international entity d) Nature of order (s)/ contract (s) / Letter of Award Normal course of business e) Whether domestic/ international Domestic f) Time period by which the order (s) / contract (s) / Letter of Award to be The work to be completed by May executed 2027 g) Broad consideration or size of the order (s) / contract (s) / Letter of The lumpsum contract value for Award Seamec Scope of Work is USD 26.14 million exclusive of GST. h) Whether the promoter / promoter group / group companies have any No, the Promoter / Promoter interest in the entity that awarded the order (s) / contract (s) / Letter of Group / Group Companies have Award? if yes, nature of interest and details thereof no interest in the entity that has awarded the contract. i) Whether the order(s)/ contract (s) / Letter of Award would fall within No. the contract does not fall related party transactions? If yes, whether the same is done at “arm’s within related party transaction. length”. 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