DREDGING INTERNATIONAL

Active Public limited companyfounded 1988active for 38 yearsScheldedijk 30, 2070 Beveren-Kruibeke-ZwijndrechtKBO/BCE: BE 0435.305.514 subsidiary of DREDGING, ENVIRONMENTAL & MARINE ENGINEERING#3 company by total assets in Beveren-Kruibeke-Zwijndrecht, Construction sector

Part of the group ACKERMANS & VAN HAAREN 247 companies in 37 countries

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Holdings

own 2025 accounts, the bar shows equity in euros

This companyDREDGING INTERNATIONAL26 holdings, 20 countries 2025 accounts

Belgium 2 Year Equity Result

BE Scaldis Salvage Marine Contractors33.75% 2025€11.2m result €6.1m (2025)
BE Combined Marine Terminal Operations Worldwide nv33.75% 2025€6.5m result -€1.3m (2025)

Europe 9 Year Equity Result

LU Normalux Maritime SA18.75% 2024€53.1m result €6.5m (2024)
NL Dredging International Netherlands BV75% 2024€43.2m result €40.3m (2024)
FR Societé de Dragage International51.52% 2024€38.6m result €20.1m (2024)
IT Societa Italiana Dragaggi Spa25.08% 2024€29.3m result €16.2m (2024)
DE Nordsee Nasbagger- un Tiefbau GMBH 2024€7.0m result €2.0m (2024)
ES Dredging International España sa10% 2024€3.5m result €516,272 (2024)
IT Rhama Port Hub S.R.L.28% 2024€1.7m result €108,386 (2024)
NL Overseas Contracting & Chartering Services BV50% 2024€367,000 result - (2024)
GB Newwaves Solutions Ltd. 2024GBP 8.6m result GBP 2.2m (2024)

North America 3 Year Equity Result

PA Corporacion Arenera Marina SA 2023-USD 189,781 result -USD 11,722 (2023)
PA Dredging International De Panama S.A. 2023-USD 101,479 result USD 19,591 (2023)
MX Logimarine Mexico SA de CV98% 2024MXN 202,128 result -MXN 149,130 (2024)

South America 1 Year Equity Result

AR Dredging International Argentina SA5% 2024-ARS 13.0m result -ARS 17.6m (2024)

Africa 6 Year Equity Result

AO Dragagem Angola Servicos LDA95% 2024AOA 659.6m result AOA 84.4m (2024)
MZ Dragamoz Limitada75% 2024MZN 2.6m result -MZN 741,874 (2024)
NG Dredging and Environmental Services Nigeria Ltd39% 2024NGN 109.1m result NGN 8.8m (2024)
NG Dredging International Services Nigeria Ltd.1% 2024NGN 6.41bn result NGN 996.8m (2024)
ZA Dredging International South Africa Pty Ltd 2024-ZAR 79,702 result -ZAR 49,038 (2024)
NG Earth Moving International Ltd.82.83% 2024NGN 325.8m result NGN 126.0m (2024)

Asia and Oceania 5 Year Equity Result

CN DI Management Consulting Shangai Ltd. 2024CNY 889,101 result CNY 157,521 (2024)
TH DIAP Thailand Co Ltd49% 2024THB 9.1m result -THB 1.1m (2024)
PG Dredeco (PNG) Ltd 2024PGK 15.5m result PGK 390,263 (2024)
SA Dredging International Saudi Arabia LTD99% 2024SAR 7.1m result SAR 10.2m (2024)
IN International Seaport Dredging Ltd93.65% 2024INR 4.26bn result -INR 122.9m (2024)

Source: list of holdings in its own 2025 accounts. Holdings that file themselves stand with their latest accounts, the others with the amounts of that list, in their own currency.

Part of the group ACKERMANS & VAN HAAREN Group, risk and exposure

Parent

DREDGING, ENVIRONMENTAL & MARINE ENGINEERING

0400.473.705 · 100% of the shares · equity €394.0m · profit €134.4m (2025)

At the same address

Scheldedijk 30, 2070 Beveren-Kruibeke-Zwijndrecht · 47 other companies

DEME Financial Services registered office since 15-07-1993 · founded in 1993 · group ACKERMANS & VAN HAAREN	total assets €3.27bn (2025) 0450.333.089
DEME Offshore BE registered office since 05-07-2019 · founded in 2019 · group DEME OFFSHORE HOLDING	527 FTE (2025) 0729.849.576
DEME GROUP registered office since 29-06-2022 · founded in 2022 · group ACKERMANS & VAN HAAREN	total assets €1.23bn (2025) 0787.829.347
DEME OFFSHORE HOLDING registered office since 15-09-2005 · founded in 2005	total assets €1.07bn (2025) 0872.162.137
DREDGING, ENVIRONMENTAL & MARINE ENGINEERING registered office since 01-11-1974 · founded in 1930 · group ACKERMANS & VAN HAAREN	turnover €21.7m (2025) 0400.473.705
DEME Dredging registered office since 10-11-2022 · founded in 2022 · group ACKERMANS & VAN HAAREN	1,374 FTE (2025) 0793.485.239
DEME Infra registered office since 04-11-2015 · founded in 2015 · group ACKERMANS & VAN HAAREN	79 FTE (2025) 0642.655.682
DEME Environmental registered office since 04-09-2000 · founded in 1988 · group ACKERMANS & VAN HAAREN	265 FTE (2025) 0435.376.382
DEME CONCESSIONS registered office since 13-05-2013 · founded in 2013 · group ACKERMANS & VAN HAAREN	23 FTE (2025) 0533.783.278
DEME Offshore Equipment registered office since 10-09-2014 · founded in 2014 · group DEME OFFSHORE HOLDING	turnover €64.5m (2025) 0561.831.423

and 37 more

Earlier ties

VINCI FINANCE INTERNATIONAL via Jacques Ninanne, at DREDGING INTERNATIONAL until 2014 · Chair of the board · deed of 06-11-2024 founded in 2008 · group VINCI	total assets €10.88bn (2025)
COMPAGNIE D'ENTREPRISES CFE via Jacques Ninanne, at DREDGING INTERNATIONAL until 2014 · De financieel en administratief directeur · deed of 05-06-2008 founded in 1880 · group ACKERMANS & VAN HAAREN	54 FTE (2025)
DEME Infra via VANDENBULCKE Luc, Louis, Joseph, Cornelius, no longer at DEME Infra · Director · deed of 02-09-2019 founded in 2015 · group ACKERMANS & VAN HAAREN	79 FTE (2025)
DEME Offshore Equipment via VANDENBULCKE Luc, Louis, Joseph, Cornelius, no longer at DEME Offshore Equipment · Director founded in 2014 · group DEME OFFSHORE HOLDING	turnover €64.5m (2025)
GLOBAL SEA MINERAL RESOURCES via VANDENBULCKE Luc, Louis, Joseph, Cornelius (no longer at GLOBAL SEA MINERAL RESOURCES) and Hugo BOUVY (no longer at GLOBAL SEA MINERAL RESOURCES) · Director · deed of 03-04-2020 founded in 2012 · group ACKERMANS & VAN HAAREN	total assets €129.7m (2025)
C-POWER HOLDCO via Christian Van Meerbeeck, at DREDGING INTERNATIONAL until 2013 · Permanent representative · deed of 31-08-2011 founded in 2000	total assets €112.5m (2025)

Show 14 more earlier ties

DEME ENVIRONNEMENT via VANDENBULCKE Luc, Louis, Joseph, Cornelius, no longer at DEME ENVIRONNEMENT · Director · deed of 08-03-2019 founded in 1990 · group ACKERMANS & VAN HAAREN	80 FTE (2025)
GREEN OFFSHORE via Marc Stordiau (at DREDGING INTERNATIONAL until 2014) and Jacques Ninanne (at DREDGING INTERNATIONAL until 2014) · Director · deeds of 02-09-2016 and 29-05-2013 founded in 2010	total assets €31.4m (2025)
G - TEC via VANDENBULCKE Luc, Louis, Joseph, Cornelius, no longer at G - TEC · Director founded in 1993 · group DEME OFFSHORE HOLDING	66 FTE (2025)
POWER@SEA via Marc Stordiau (at DREDGING INTERNATIONAL until 2014), Christian Van Meerbeeck (at DREDGING INTERNATIONAL until 2013) and 2 others · Director · deeds of 11-09-2013 and 22-06-2007 founded in 1999 · group ACKERMANS & VAN HAAREN	total assets €25.2m (2025)
GEZINSBOND via HERMANS Philip, at DREDGING INTERNATIONAL until 2023 · Director · deed of 20-02-2018 founded in 1961	82 FTE (2025)
Gezinsvakantie-Familiatours via HERMANS Philip, at DREDGING INTERNATIONAL until 2023 · Chair · deed of 18-02-2022 founded in 1969	24 FTE (2025)
Institut Saint-Dominique via Jacques Ninanne, at DREDGING INTERNATIONAL until 2014 · Director · deed of 06-09-2024 founded in 1964	18 FTE (2025)
DEME BLUE ENERGY via Christian Van Meerbeeck (at DREDGING INTERNATIONAL until 2013), LENAERTS, Tom (at DREDGING INTERNATIONAL until 2020) and VERBRAECKEN, Els Gustaaf (at DREDGING INTERNATIONAL until 2024) · deeds of 02-05-2017, 21-11-2016 and 10-08-2011 founded in 2010 · group ACKERMANS & VAN HAAREN	total assets €162,134 (2025)
EERSTE KLAS via HERMANS Philip, at DREDGING INTERNATIONAL until 2023 · Permanent representative · deed of 04-05-2026 founded in 2019	total assets €101,648 (2025)
BELGIAN-VIETNAMESE ALLIANCE/LIÊN MINH BI-VIÊT via Marc Stordiau, at DREDGING INTERNATIONAL until 2014 · Director · deed of 25-07-2022	founded in 2011
Credendo - Guarantees & Speciality Risks via VERBRAECKEN, Els Gustaaf, at DREDGING INTERNATIONAL until 2024 · Independent non-executive director · deed of 09-05-2025 group Delcredere	founded in 2004
ICC Belgique via LENAERTS, Tom, at DREDGING INTERNATIONAL until 2020 · Director · deed of 03-07-2020	founded in 2007
Round Table 25 Antwerpen via HERMANS Philip, at DREDGING INTERNATIONAL until 2023 · Director · deed of 11-01-2024	founded in 2020
RENEWABLE ENERGY BASE OSTEND via LENAERTS, Tom, at DREDGING INTERNATIONAL until 2020 · Director · deed of 12-07-2016 No longer active · founded in 2010	turnover €460,330 (2026)

Holdings and subsidiaries

26 holdings

Share, source and own figures per holding (26)

Source for every holding own accounts 2025

Corporacion Arenera Marina SAPAsubsidiary
Equity -USD 189,781Result -USD 11,722

100%
DI Management Consulting Shangai Ltd.CNsubsidiary
Equity CNY 889,101Result CNY 157,521

100%
Dredeco (PNG) LtdPGsubsidiary
Equity PGK 15.5mResult PGK 390,263

100%
Dredging International De Panama S.A.PAsubsidiary
Equity -USD 101,479Result USD 19,591

100%
Dredging International South Africa Pty LtdZAsubsidiary
Equity -ZAR 79,702Result -ZAR 49,038

100%
Newwaves Solutions Ltd.GBsubsidiary
Equity GBP 8.6mResult GBP 2.2m

100%
Nordsee Nasbagger- un Tiefbau GMBHDEsubsidiary
Equity €7.0mResult €2.0m

100%
Dredging International Saudi Arabia LTDSAsubsidiary
Equity SAR 7.1mResult SAR 10.2m

99%
Logimarine Mexico SA de CVMXsubsidiary
Equity MXN 202,128Result -MXN 149,130

98%
Dragagem Angola Servicos LDAAOsubsidiary
Equity AOA 659.6mResult AOA 84.4m

95%
International Seaport Dredging LtdINsubsidiary
Equity INR 4.26bnResult -INR 122.9m

93.65%
Earth Moving International Ltd.NGsubsidiary
Equity NGN 325.8mResult NGN 126.0m

82.83%
Dragamoz LimitadaMZsubsidiary
Equity MZN 2.6mResult -MZN 741,874

75%
Dredging International Netherlands BVNLsubsidiary
Equity €43.2mResult €40.3m

75%
Societé de Dragage InternationalFRsubsidiary
Equity €38.6mResult €20.1m

51.52%
Overseas Contracting & Chartering Services BVNL
Equity €367,000

50%
DIAP Thailand Co LtdTH
Equity THB 9.1mResult -THB 1.1m

49%
Dredging and Environmental Services Nigeria LtdNG
Equity NGN 109.1mResult NGN 8.8m

39%
Combined Marine Terminal Operations Worldwide
Equity €6.5m Loss of €1.3m in 2025 (profit of €739,382 in 2024) Checked score 84
Alsoaccounts Combined Marine Terminal Operations Worldwide 2025

33.75%
SCALDIS SALVAGE & MARINE CONTRACTORS
Equity €11.2m Profit of €6.1m in 2025 (profit of €2.9m in 2024) Checked score 96

33.75%
Rhama Port Hub S.R.L.IT
Equity €1.7mResult €108,386

28%
Societa Italiana Dragaggi SpaIT
Equity €29.3mResult €16.2m

25.08%
Normalux Maritime SALU
Equity €53.1mResult €6.5m

18.75%
Dredging International España saES
Equity €3.5mResult €516,272

10%
Dredging International Argentina SAAR
Equity -ARS 13.0mResult -ARS 17.6m

5%
Dredging International Services Nigeria Ltd.NG
Equity NGN 6.41bnResult NGN 996.8m

1%

Former holdings (2)

Otary RS
Sourceaccounts Otary RS 2024

12.5%
Blue Open
Sourcedeed 16-06-2025deed 07-11-2024

share not stated

Holdings through the years 2008 to 2025

Holdings through the years
Name	2008	2009	2010	2011	2012	2013	2014	2015	2017	2018	2019	2020	2021	2025
Corporacion Arenera Marina SAPA 2008 to 2025: 100%	100%
DI Management Consulting Shangai Ltd.CN 2008 to 2025: 100%	100%
Dredeco (PNG) LtdPG 2025: 100%														100%
Dredging International De Panama S.A.PA 2008 to 2025: 100%	100%
Dredging International South Africa Pty LtdZA 2012 to 2025: 100%					100%
Newwaves Solutions Ltd.GB 2017 to 2025: 100%									100%
Nordsee Nasbagger- un Tiefbau GMBHDE 2008 to 2013: 52% 2014 to 2025: 100%	52%						100%
Dredging International Saudi Arabia LTDSA 2018 to 2024: 49% 2025: 99%										49%				99%
Logimarine Mexico SA de CVMX 2014 to 2025: 98%							98%
Dragagem Angola Servicos LDAAO 2008 to 2025: 95%	95%
International Seaport Dredging LtdIN 2014 to 2018: 76.96% 2019 to 2020: 83.43% 2021 to 2024: 89.86% 2025: 93.65%							76.96%				83.43%		89.86%	93.65%
Earth Moving International Ltd.NG 2008: 90% 2009 to 2025: 82.83%	90%	82.83%
Dragamoz LimitadaMZ 2014 to 2025: 75%							75%
Dredging International Netherlands BVNL 2019 to 2025: 75%											75%
Societé de Dragage InternationalFR 2008: 99.99% 2013 to 2025: 51.52%	99.99%					51.52%
Overseas Contracting & Chartering Services BVNL 2017 to 2025: 50%									50%
DIAP Thailand Co LtdTH 2020 to 2025: 49%												49%
Dredging and Environmental Services Nigeria LtdNG 2015 to 2025: 39%								39%
Combined Marine Terminal Operations Worldwide 2010 to 2025: 33.75%			33.75%
SCALDIS SALVAGE & MARINE CONTRACTORS 2008 to 2025: 33.75%	33.75%
Rhama Port Hub S.R.L.IT 2021 to 2025: 28%													28%
Societa Italiana Dragaggi SpaIT 2008 to 2020: 1% 2021 to 2025: 25.08%	1%												25.08%
Normalux Maritime SALU 2011 to 2025: 18.75%				18.75%
Dredging International España saES 2013 to 2025: 10%						10%
Dredging International Argentina SAAR 2021 to 2025: 5%													5%
Dredging International Services Nigeria Ltd.NG 2008 to 2014: 84% 2015 to 2025: 1%	84%							1%
Dredging International India Pvt LtdIN 2014 to 2024: 99.97%							99.97%
MEMC Middle East Marine Contracting LimitedCY 2018 to 2021: 100%										100%
Berin Engenharia, Dragagens e Ambiente saPT 2010 to 2021: 48.97%			48.97%
Deme Offshore Nederland BVNL 2019: 75%											75%
TERRANOVA 2011 to 2019: 25%				25%
LOGIMARINE 2008 to 2019: 1.25%	1.25%
Deme Building Materials 2008: 1% 2009 to 2017: 0.56% 2018 to 2019: 0.18%	1%	0.56%								0.18%
Tideway BVNL 2008 to 2018: 75%	75%
Baggerwerken De Cloedt en Zoon Espana SAES 2014 to 2018: 10%							10%
M.D.C.C. INSURANCE BROKER 2008 to 2018: 0.8%	0.8%
De Vries & van de Wiel Kust -en Oeverwerken bvNL 2009 to 2017: 50%		50%
CEBRUVAL-BRUCEVAL 2008 to 2017: 0.04%	0.04%
Dredging International UK Ltd.GB 2008 to 2013: 10% 2014 to 2016: 100%	10%						100%
DEME BLUE ENERGY 2010: 99.99% 2011 to 2014: 69.96%			99.99%	69.96%
DREDGING, ENVIRONMENTAL & MARINE ENGINEERING 2010: 0.33% 2012: 0.28% 2013: 0.56%			0.33%		0.28%	0.56%
ROOMKAUTER 2008 to 2012: 99.99%	99.99%
SocietÃ© de Dragage InternationalFR 2009: 99.99% 2010 to 2012: 51.52%		99.99%	51.52%
Dredging International EspaÃ±a saES 2010 to 2012: 10%			10%
Dredging International South Pty LtdZA 2008 to 2011: 100%	100%
Dredging International Mexico SA de CVMX 2008 to 2009: 99.99%	99.99%
KALIS 2008: 50%	50%