Slide 1: Full-Year Results 2025: Record Performance Marks 150 Years of Delivery
FULL-YEAR RESULTS 2025 RECORD PERFORMANCE MARKS 150 YEARS OF DELIVERY LUC VANDENBULCKE & STIJN GAYTANT Thursday, February 26, 2026
Slide 2: Agenda
AGENDA Executive ESG 1 4 Summary Financial Outlook 2 5 Update Business Q&A 3 6 Update 2
Slide 3: Executive Summary FY25
EXECUTIVE SUMMARY FY25 RECORD PERFORMANCE MARKS 150 YEARS OF DELIVERY Turnover at EBITDA 931 million euros Taking delivery of Norse Wind Guiding for a turnover and 4.2 billion euros and margin at 22.4%, from and Norse Energi and set to EBITDA margin in 2026 764 million euros and commence project wor
Slide 4: Financial Update
FINANCIAL UPDATE S&S DEME
Slide 5: FY25 Key Financial Highlights (1/2)
FY25 KEY FINANCIAL HIGHLIGHTS (1/2) INCOME STATEMENT (in millions of euros) FY25 FY24 FY23 ▪ Order book healthy at 7.6 billion euros Order book 7,591 8,200 7,582 y-o-y growth -7% +8% +22% ▪ Turnover +1% compared to the previous year Turnover 4,155 4,101 3,285 and holding firm above 4 billion euros y
Slide 6: FY25 Key Financial Highlights (2/2)
FY25 KEY FINANCIAL HIGHLIGHTS (2/2) KEY BALANCE SHEET ITEMS (in millions of euros) FY25 FY24 FY23 ▪ CAPEX amounted to 445 million euros, up from 286 million euros; mainly recurring investments, lifetime extensions and capitalized Operating working capital1 -742 -813 -471 maintenance and part of the
Slide 7: FY25 Group Order Book
FY25 GROUP ORDER BOOK ORDER BOOK REMAINS SOLID 1 Order book 8,200 Geographical Order book run-off (in millions of euros) 7,582 7,591 breakdown (in millions of euros) 1% 2,021 10% 5,905 6,190 7% 1,986 10% 3% 4% 12% FY25 3,584 FY24 4% 71% 78% FY21 FY22 FY23 FY24 FY25 Europe Africa The Americas Offshor
Slide 8: FY25 Group Turnover
FY25 GROUP TURNOVER GROUP TURNOVER +1% YEAR-OVER-YEAR AND +4 BILLION EUROS 1 Turnover Segment breakdown Geographical 4,101 4,155 3% (in millions of euros) (in millions of euros) breakdown 14% 6% 0% 3,285 2,511 2,655 5% 9% 20% FY25 FY25 49% 54% 18% 45% FY24 8% 60% 9% FY21 FY22 FY23 FY24 FY25 Offshore
Slide 9: Segment Offshore Energy
SEGMENT OFFSHORE ENERGY PERFORMANCE DASHBOARD FY25 Order book Turnover EBITDA & EBITDA Fleet utilization rate 4,259 4,238 2,134 margin (in weeks) 47 2,055 44 (in millions of euros) (in millions of euros) (in millions of euros) 655 42 41 3,755 34 3,261 1,502 432 2,817 958 222 231 31% 916 171 21% 23%
Slide 10: Segment Dredging & Infra
SEGMENT DREDGING & INFRA PERFORMANCE DASHBOARD FY25 Order book Turnover EBITDA & EBITDA Fleet utilization rate margin (in weeks) 43 (in millions of euros) (in millions of euros) (in millions of euros) 358 41 3,589 38 38 39 3,472 1,963 1,952 306 299 302 34 1,605 255 29 2,945 1,478 1,524 27 2,833 25 2
Slide 11: Segment Environmental
SEGMENT ENVIRONMENTAL PERFORMANCE DASHBOARD FY25 Order book Turnover EBITDA & EBITDA margin (in millions of euros) (in millions of euros) (in millions of euros and %) 408 51 337 304 44 355 352 272 40 313 206 166 25 255 17 17% 15% 12% 13% 10% FY21 FY22 FY23 FY24 FY25 FY21 FY22 FY23 FY24 FY25 FY21 FY2
Slide 12: Segment Concessions
SEGMENT CONCESSIONS PERFORMANCE DASHBOARD FY25 Net result from associates (in millions of euros) 37.4 ▪ Net result from associates of 14 million euros compared to 12 million euros in 2024 ▪ As in the prior year, wind production was on the soft side, partly offset by stronger port concession activity
Slide 13: Business Update
03 BUSINESS UPDATE SDEME
Slide 14: Offshore Energy
Our segments OFFSHORE ENERGY OFFSHORE ENERGY 14
Slide 15: Offshore Energy: Key Projects in 2025-2026
OFFSHORE ENERGY C DOGGER BANK A, B and C (3.6 GW) Inter-array cables and rock dumping D IJMUIDEN VER ALPHA & NEDERWIEK 1 (4 GW) Cable installation, landfall, rock placement, KEY PROJECTS IN 2025-2026 NEARTH NA GAOITHE (500 MW) dredging, and marine infrastructure works Inter-array and interconnector
Slide 16: Coastal Virginia
Coastal Virginia 176 monopiles, substations, inter- array and export cables United States OFFSHORE ENERGY 16
Slide 17: Île d'Yeu and Noirmoutier
Île d’Yeu and Noirmoutier 61 XXL monopiles, jacket and substation France OFFSHORE ENERGY 17
Slide 18: Hai Long
Hai Long 73 jacket foundations, turbines and offshore substation Taiwan OFFSHORE ENERGY 18
Slide 19: Dredging & Infra
Our segments DREDGING & INFRA 19
Slide 20: Dredging & Infra: Key Projects in 2025-2026
DREDGING & INFRA E ARDERSIER ENERGY TRANSITION FACILITY G OOSTERWEEL Immersion of tunnel I FEHMARNBELT TUNNEL Design and construction of Deepening and widening of elements for the Scheldt tunnel and portal structures KEY PROJECTS IN 2025-2026 the harbor and access Tunnel channel J SPAIN PRINCESS ELI
Slide 21: Ardersier Energy Transition Facility
Ardersier Energy Transition Facility Deepening and widening of the harbor and access channel Scotland DREDGING & INFRA 21
Slide 22: Princess Elisabeth Island
Princess Elisabeth Island Design & construction of the island’s foundations Belgium DREDGING & INFRA 22
Slide 23: Abu Qir
Abu Qir Continuation of reclamation works for the port of Abu Qir 2 Egypt DREDGING & INFRA 23
Slide 24: Environmental
Our segments ENVIRONMENTAL 24
Slide 25: Environmental: Key Projects in 2025-2026
ENVIRONMENTAL KEY PROJECTS IN 2025-2026 A OOSTERWEEL WDP WILLEBROEK Cleaning PFAS polluted soils Cleaning up old landfill site SERAING BASF FELUY Large reconversion project of Remediation of former a former ArcelorMittal site, industrial brownfield site near Liège MEUSE RIVER Dredging operations and
Slide 26: BASF Feluy
BASF Feluy Remediation of a former industrial brownfield site Belgium ENVIRONMENTAL 26
Slide 27: Cargen
Cargen Activated carbon filter units at RC Den Helder The Netherlands ENVIRONMENTAL 27
Slide 28: Concessions
Our segments CONCESSIONS 28
Slide 29: Concessions: Key Projects in 2025-2026
CONCESSIONS B SCOTWIND Development of Bowdun Offshore Wind Farm (1 GW) KEY PROJECTS IN 2025-2026 C FRANCE B Port-La Nouvelle D C D BELGIUM Operating SeaMade, Rentel and C-Power wind farms E A E OMAN Port of Duqm and HYPORT Duqm A BRAZIL Port of Paranaguá: operation, maintenance, and expansion of the
Slide 30: ScotWind
ScotWind Bowdun Offshore Wind Farm, suited for fixed-foundation turbines Scotland CONCESSIONS 30
Slide 31: Paranaguá
Paranaguá A 25-year concession contract to operate, maintain, and expand the marine access channel Brazil CONCESSIONS 31
Slide 32: ESG
WJ O © W wo z Wi a
Slide 33: FY25 ESG (1/2)
FY25 ESG (1/2) ENVIRONMENTAL EU Taxonomy EU Taxonomy Greenhouse Gas footprint & Energy management Turnover CapEx 7978 (in %) (in %) 52 5252 (in % of total volume) FY25 FY24 FY23 FY22 4542 47 4949 4746 42 2926 33 3232 Reduction of GHG 2824 ** 30 ** 27 Intensity 1 Low-carbon fuels 5.5 5.8 10.2 6.0 FY2
Slide 34: FY25 ESG (2/2)
FY25 ESG (2/2) SOCIAL & SAFETY Headcount Safety (in headcount) (in worldwide LTIFR ) 0.23 5,984 5,822 0.19 0.19 0.18 5,555 5,207 0.10 5,090 FY21 FY22 FY23 FY24 FY25 FY21 FY22 FY23 FY24 FY25 ▪ DEME’s workforce had grown to nearly 6,000 employees in ▪ DEME remains committed to safety, focusing on Key
Slide 35: Outlook & Dividend
O05 OUTLOOK & DIVIDEND NS DEME
Slide 36: Outlook
OUTLOOK ▪ FOR 2026, and considering the current project schedules in the backlog, the pipeline of new opportunities, and fleet capacity, DEME’s management expects ▪ Turnover and EBITDA margin to be in line with 2025 ▪ CapEx to be around 450 million euros, including upgrade, repair and maintenance in
Slide 37: Dividend
DIVIDEND ▪ In line with DEME’s dividend policy, targeted to a pay-out ratio of 33% of the group’s Dividend net profit, the Board of Directors will propose a gross dividend of 4.5 euros per (in euros) 4.5 share to the General Assembly, marking an 18% increase compared to last year. 3.8 ▪ Subject to t
Slide 38: Looking ahead to 2026: Norse Wind & Norse Energi
Looking ahead to 2026: NORSE WIND & NORSE ENERGI 38
Slide 39: Looking ahead to 2026: Celebrating 150 Years
Looking ahead to 2026: CELEBRATING 150 YEARS https://150yearsofdeme.com/ 39
Slide 40: Q&A
O06 Q&A DEME NS
Slide 41: Financial Calendar
FINANCIAL CALENDAR Annual Report 2025 March 27, 2026 Trading update Q1 2026 May 13, 2026 Annual General Meeting May 20, 2026 Dividend payment date May 29, 2026 Half-year results 2026 August 26, 2026 Trading update Q3 2026 November 17, 2026 41
Slide 42: For More Information
FOR MORE INFORMATION For more information, please contact Vanden.bussche.carl@deme-group.com
Slide 43: Disclaimer
DISCLAIMER This presentation contains proprietary and/or confidential information. Any disclosure, copying, distribution or use of this information/the ideas incorporated is strictly prohibited. This information is not to be considered as a representation of any kind. Any intellectual and industrial