The world is moving quickly toward a more circular economy. Companies have the opportunity now to gain the advantages of capturing the value that comes from being a leader.

Mark Weick

Managing Director, Climate Change and Sustainability Services, Ernst & Young LLP

Passionate leader of innovation and sustainable business practices. Over 35 years in the chemicals and plastics industry, with a decade of directing both sustainability and enterprise risk management.

In his role as a Managing Director for Climate Change and Sustainability Services at Ernst & Young LLP, Mark helps companies develop clear action plans to take advantage of emerging circular economy trends and opportunities, and to integrate environmental, social and governance (ESG) into company strategy and decisions.

He served 35 years at a Fortune 100 company, with research and development, ESG, mergers and acquisitions; and business leadership roles concluding with a decade of directing both sustainability and enterprise risk management for the entire company. Mark worked closely with senior management, business leaders and manufacturing personnel, as well as board members and senior NGO and academic leaders, while directing the company’s sustainability external advisory council and developing industry-leading cross-sector collaborations.

Mark earned a BsC in Chemical Engineering from Northwestern University.

 

How Mark is building a better working world

“Throughout my working career, I have built a better working world through award-winning innovation teams, breakthrough cross-sector collaborations and proven sustainability goals that increased triple-bottom-line profits. We’ll continue to build a better working world as we account in new ways for how we are impacting our ecosystems. We’re now seeing a lot more awareness and a drive to incorporate circular economy initiatives, climate change and the overall ESG agenda into business strategy and decisions.”

Mark's latest thinking

How midsize manufacturers can benefit from outsourcing sustainability

Explore how midsize manufacturers can leverage outsourcing to enhance sustainability efforts, streamline compliance and access specialized knowledge.

19 May 2025 Anne Munaretto +1

Driving action on nature through enhanced transparency and reporting

Discover key trends in nature-related reporting with the 2024 EY Nature Risk Barometer. Sign up to learn more.

17 Sep 2024 Lucy Godshall +1

How circular strategies can be used to decarbonize Scope 3 GHG emissions

This article examines the potential benefits and opportunities for leveraging circular strategies to decarbonize select Scope 3 categories.

01 Dec 2023 Mark Weick

Plastics accounting: the missing piece to the plastic pollution puzzle

This article by the Circular Economy team advocates for integrating plastics accounting into regulatory and policy levers to address plastic waste issues.

07 Nov 2023 Mark Weick +1

How CSRD regulations embrace circular economy principles

Discover how the EU's CSRD addresses Circular Economy and Resource Use, and how companies can prepare for more circular strategies and disclosures.

26 Sep 2023 Brian Tomlinson +2

Rethinking bonds: Financing circularity

Sustainable finance has mainstreamed over the past decade; bond markets can evolve to better funnel funding to circular systems.

29 Aug 2023 Mark Weick +1

How the nature-related regulatory disclosure landscape is evolving

As nature-related regulations grow and nature becomes increasingly important, companies should start preparing for their response to these requirements.

22 Jun 2023 Lucy Godshall +1

How can circularity drive sustainable and equitable building?

Presenting the potential environmental and social benefits of incorporating circularity into construction amongst today’s landscape.

14 Jun 2023 Mark Weick +1

Certifications can drive plastics circularity

Transitioning to a circular economy will keep plastics in circulation for longer and reduce the need for single-use plastic.

05 Jun 2023 Mark Weick +1

Beyond batteries: electric vehicle circularity

Around 60% of EV materials by value are non-battery-related. Integrating circular strategies for all auto parts can increase profitability and reduce risk.

04 Apr 2023 Mark Weick +1

How companies can leverage the circular economy to address global e-waste

Electronic waste creates a $57 billion loss annually. Adopting circular models can help firms access untapped opportunities and lower environmental impact.

20 Feb 2023 Mark Weick +1

Why nonfinancial reporting should include enhanced circularity aspects

Metrics to track and measure environmental and business performance are increasingly necessary. Learn what we found across industries in our study.

06 Feb 2023 Mark Weick +1

Circular economy: Navigating the evolving global policy landscape

Historically, geographical limitations and scarcity of natural resources have been key drivers for implementing circular economy policies.

16 Dec 2022 Mark Weick +1

If it’s broken, fix it: how chemical recycling can fix the broken plastics cycle

Leaders in the chemical industry are urged to consider the benefits of chemical recycling, which can scale with the proper technology investments.

26 Oct 2022 Mark Weick +1

How industrial leaders can use sustainability to create value

Industrial companies must embed value-led sustainability and deploy digital tools to stay ahead of the curve. Learn more.

06 Jun 2022 Claudio Knizek +4

How redefining the circular economy could reshape a sustainable planet

In this Sustainability Matters podcast episode, EY market leaders and Chris Hagler discuss how businesses slow down the climate crisis.

01 Dec 2021 34m 45s

Can repurposing drive your purpose in a circular economy?

Chemical companies can leverage the circular economy to create long-term value, fueling dramatic social and environmental benefits.

08 Sep 2021 Sue Tame

How to use products and packaging to advance the circular economy

This episode discusses how product design and manufacturing can advance the circular economy by reducing the impacts of consumer products.

13 Aug 2021 38m 5s
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