Committee Membership

The Executive Committee of COS consists of the two co-chairs and the university's Director of Sustainability. COS advises the Office of Sustainability and the Office of the President on university sustainability matters and helps set priorities for each subcommittee. 

COS is charged with developing, planning and recommending to the President strategies for implementing William & Mary's Sustainability Policy. The core principle guiding the creation of COS is the integration of COS and its recommended sustainability program into the fabric of the university. COS not only taps the intellectual capital of the university, but also feeds into and benefits from its teaching, research and service missions.

• Co-Chairs: Appointed by the President
• Members: Appointed by the Executive Committee, in consultation with the Office of the President
• Term: 3 years (faculty), 1 year (students)

Executive Committee

- Jim Kaste, Co-Chair | Former Faculty Director, ENSP
- Ann Kildahl, Director of Sustainability
- Dan Pisaniello, Co-Chair | University Architect, Business Affairs

Committee Members (alphabetical):

- Ginger Ambler | Vice President, Office of Student Affairs
- Tonya Boone | Professor of Business
- Rachel Chung | Associate Clinical Professor
- Andrew Fisher | Professor of History
- Sean Hughes | Chief Business Officer, Business Affairs
- Matthias Leu | Associate Professor of Biology
- Joseph Martinez | Chief Operations Officer, VIMS
- Mike Maddalena | AVP, Budget and Financial Planning
- Christopher, Renjilian | AVP, Health & Wellness 
- Ran Yang | Professor of Engineering Physics

2025-2026 Student Committee Members:

- Rebecca Fuchs '26
- Aayla Kastning '26, Ex Officio | Student Assembly
- Alex Stevenson '27
- Louise Strawn | Graduate Student - Business 

Student Staff to the Committee:

- Madeleine Fernandez '28
- Riley Nichols '28