Welcome to Senior SIRI Fellows: Tom Hedrick, Steve Lydenberg, Chris Pinney, and Visiting Senior Research Scholar, Vincent Shen

December 05, 2025

We extend a warm welcome to Senior SIRI Fellows:

  • Tom Hedrick,

    Tom is the Managing Director and founder of Dillon Joyce Ltd, where he has spent the past 23 years investing in private companies across the full corporate lifecycle - from seed-stage ventures to late-stage leveraged buyouts. Prior to founding Dillon Joyce, Tom was a Senior Partner at McKinsey & Company, where he served as Managing Partner of the Dallas office and co-led both the High Tech and Private Equity practices. He began his career as a petroleum engineer at Exxon. He is now shifting his focus to climate-related initiatives, with recent investments in carbon dioxide reduction through software innovation and forestation projects.

  • Steve Lydenberg

    Steve was previously Partner, Strategic Vision for Domini Impact Investments LLC, Founder and Chairman of The Investment Integration Project (TIIP), and Founding Director of the Initiative for Responsible Investment. For over four decades he has been active in responsible investment with the Council on Economic Priorities, Trillium Asset Management and KLD Research & Analytics. He is author of numerous articles on responsible investment including, ‘Reason, Rationality and Fiduciary Duty’ and ‘On Materiality and Sustainability: The Value of Disclosure in the Capital Markets.’

  • Chris Pinney

    Chris Pinney is the founding president of High Meadows Institute, a Boston-based think tank exploring the changing role of corporate and financial sector leadership and responsibility in the 21st century. Chris brings to the Institute over twenty-five years of experience working with C-suite executives nationally and internationally on corporate leadership in society. As president of HMI, Chris has led the development of the Institute’s Future of Corporate Governance and Future of Capital Markets projects, which bring together corporate and financial sector leaders in designing frameworks for corporate governance and sustainable capital markets equal to the challenges and expectations of the 21st century.

We are delighted to welcome as Visiting Senior Research Scholar:

  • Vincent Shen

    Vincent leads the Systems Impact Multi-Family Office, SIMFO, and chairs the SZU CHI Angel Private Equity Fund, continuing his legacy as a systems thinker and market maker, tackling the root causes of environmental challenges in collaboration with Oxford, MIT, Harvard, Berkeley, and Columbia University, along with global impact families such as Jeff Bezos, Michael Bloomberg, and Bill Gates partnering with the Environmental Defense Fund, EDF.

Find more information about our team on our People page.