Boskalis Sustainability Report 2020

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OUR APPROACH

OUR MATERIAL TOPICS Our sustainability strategy has been formed around the material topics that were identified in a materiality analysis. The materiality assessment illustrates the relative importance of a shortlist of 23 topics to our business and our stakeholders. These topics were defined based on ESG benchmarks and reporting frameworks, alongside a media and peer analysis. During the last update in 2019, an online assessment was carried out, inviting input from over 50 members of senior management, the entire Board of Management, as well as over 100 employees. In addition, over 100 external stakeholders including clients, investors, NGOs and suppliers, were asked to participate in the assessment. Each of the 23 topics were clearly defined and the internal and external stakeholders were asked to rank the issues that matter most and least to them. The resulting materiality matrix as shown below presents the relative importance of these themes. Boskalis intends to update this assessment in 2021.

MEASURING, REVIEWING, REPORTING We have been publicly disclosing our sustainability performance for more than a decade. Our report is based on the guidance of the Global Reporting Initiative (GRI) and focuses on communicating the key sustainability challenges and opportunities we face and the ways we respond to them. Together with our Annual Report 2020 we fulfill our responsibilities with respect to the Dutch Besluit ‘bekendmaking niet-financiële informatie’. You can read more about our reporting scope and disclosures on page 90. The Boskalis Annual Report 2020, which is published together with this report, covers our economic and operational performance.

Strategy and ambition SUSTAINABILITY REPORT 2020 – BOSKALIS MATERIALITY MATRIX LOW IMPORTANCE TO STAKEHOLDER LOW HIGH 22 12 10 8 3 11 19 9 18 17 16

1. Climate change adaptation 2. Local impact and social performance

3. Community investments 4. Innovation (sustainable) 5. Biodiversity and ecosystems 6. Emissions 7. Energy transition 8. Water quality 9. Ship dismantling and recycling 10. Waste management 11. Sand and soil availability 12. Invasive Species 13. Safety 14. Employee development and talent management 15. Occupational health 16. Fair labor practices 17. Diversity and Inclusion 18. Responsible supply chain management 19. Sustainable employability 20. Partnerships & Stakeholder Engagement 21. Responsible business conduct 22. Taxes 23. Economic performance

13

5

23

4

1

6

20

7

14

2

15

21

IMPORTANCE TO BUSINESS

HIGH