HOUSTON, June 11, 2025 /PRNewswire/ -- McDermott announces the launch of a Circularity Calculator, aligned to ISO 59020 standards, to support growing demand for transparent circular economy performance measurement across the lifecycle of energy infrastructure projects.

Developed in-house, the tool provides a standardized, data-driven method for assessing circularity from design through to decommissioning. The new tool is part of McDermott's strategy to embed circularity principles across all phases of project execution, with the following benefits:

• ISO 59020 alignment: Independently assured to meet international standards for circularity measurement.
• Lifecycle insights: Quantifies the recyclability or reuse potential of a design.
• Measurement and reporting: Provides quantifiable data as a basis for decision making in material selection.

"Circularity strategies drive cost, environmental, and supply chain benefits for our projects, operations, and customers," said Rachel Clingman, McDermott's Executive Vice President, Sustainability and Governance and Chief Legal Officer. "Our Circularity Calculator provides traceable data aligned with global standards to support strategic decisions and appropriate reporting."

Initially deployed across McDermott's decommissioning portfolio, the calculator quantifies circularity based on data collected after processing materials through recycling, reuse, and other disposal pathways.

"This tool provides the transparency and data needed to integrate circular resource strategies into subsea and offshore energy infrastructure projects – essential elements to enhancing not only project sustainability, but also operational efficiency and value for our customers," said Mahesh Swaminathan, McDermott's Senior Vice President, Subsea and Floating Facilities.

For more information or to explore how McDermott's Circularity Calculator can support your project goals, please contact McDermott's Sustainability team at sustainability@mcdermott.com.

About McDermott
McDermott is a premier, fully-integrated provider of engineering and construction solutions to the energy industry. Our customers trust our technology-driven approach engineered to responsibly harness and transform global energy resources into the products the world needs. From concept to commissioning, McDermott's innovative expertise and capabilities advance the next generation of global energy infrastructure—empowering a brighter, more sustainable future for us all. Operating in over 54 countries, McDermott's locally-focused and globally-integrated resources include more than 30,000 employees, a diversified fleet of specialty marine construction vessels and fabrication facilities around the world. To learn more, visit www.mcdermott.com.

Forward-Looking Statements
McDermott cautions that statements in this communication which are forward-looking, and provide other than historical information, involve risks, contingencies, and uncertainties that may impact McDermott's actual results of operations. Although we believe that the expectations reflected in those forward-looking statements are reasonable, we can give no assurance that those expectations will prove to have been correct. Those statements are made by using various underlying assumptions and are subject to numerous risks, contingencies, and uncertainties, including, among others: adverse changes in the markets in which we operate or credit or capital markets; our inability to successfully execute on contracts in backlog; changes in project design or schedules; the availability of qualified personnel; changes in the terms, scope or timing of contracts, contract cancellations, change orders, and other modifications and actions by our customers and other business counterparties; changes in industry norms; actions by lenders and other creditors of McDermott and adverse outcomes in legal or other dispute resolution proceedings. If one or more of these risks materialize, or if underlying assumptions prove incorrect, actual results may vary materially from those expected. This communication reflects management's views as of the date hereof. Except to the extent required by applicable law, McDermott undertakes no obligation to update or revise any forward-looking statement.

Contacts:

Global Media Relations
Reba Reid
Senior Director, Global Communications and Marketing
+1 281 588 5636
RReid@McDermott.com

SOURCE McDermott International, Ltd