Disclosures: NMDC – NPCC enters into a Memorandum of Understanding with Petrojet

Disclosures: National Marine Dredging Co - Uncollected cash dividends distributions by the Shareholders for the period before 1 March, 2015.

Disclosures: National Marine Dredging Co. Announcement of Board Meeting to be held on 18/11/2021 at 4 PM

Disclosures: National Marine Dredging Co. Management Discussion and Analysis Report for the Period Ended September 30,2021

Disclosures: National Marine Dredging Co. Financial Results for the Period Ended September 30,2021

Disclosures: National Marine Dredging Co - Uncollected cash dividends distributions by the Shareholders for the period before 1 March, 2015.

Disclosures: NMDC – NPCC enters into a Memorandum of Understanding with Technip Energies

Disclosures: National Marine Dredging Co - Uncollected cash dividends distributions by the Shareholders for the period before 1 March, 2015.

Disclosures: NMDC - Framework Agreements related to National Petroleum Construction Company PJSC

Disclosures: National Marine Dredging Co - Uncollected cash dividends distributions by the Shareholders for the period before 1 March, 2015.

Disclosures: National Marine Dredging Co. New Project

Disclosures: National Marine Dredging Co - Uncollected cash dividends distributions by the Shareholders for the period before 1 March, 2015.