Wolf DiMatteo Associates

About: Meet our Management Team

Incomparable Knowledge and a Depth of Experience

Wolf DiMatteo Associates has incomparable knowledge and a depth of experience in every link of the organic and sustainable supply chain, from farm to retail shelf.


Bill Wolf
BILL WOLF, President and Senior Associate and WDA Founder, oversees strategic planning services and brings to bear over 35 years of experience producing organic products—from foods to fertilizer and pest controls. Bill entered the field of sustainable agriculture in 1971 when he conducted global environmental research working with R. Buckminster Fuller. Over forty years, Bill has made significant contributions to agriculture: he founded the first national organic farming supply company, served on the OTA Board of Directors, and was the founding President of the Organic Materials Review Institute (OMRI) which independently reviews products intended for use in certified organic production and handling. He was a founding organizer of Amalgamated Bank, (formally New Resource Bank), the first community bank to focus on serving green businesses.


Katherin DiMatteo
KATHERINE DIMATTEO, Managing Partner and Senior Associate, leads policy, regulatory, and international services. She brings a wealth of expertise to our clients, including 16 years at the helm of organizations such as the Organic Trade Association and Sustainable Food Trade Association. Katherine co-founded The Organic Center as well as Climate Collaborative and serves on the board for Fairtrade America, At The Epicenter, and Climate Collaborative. Among other credits, Katherine was instrumental in shaping the outcome of the U.S. National Organic Program (NOP) Standards and securing Congressional support. She also helped shape the UN Codex Guidelines for Organic and the Global Organic Textile Standards. Katherine served as President of the Board of Directors of the International Federation of Organic Agriculture Movements (IFOAM) from 2008 to 2011.


Sandy Mays
SANDY MAYS, Managing Partner and Senior Associate, manages Organic Compliance Services, and has more than 20 years of experience in organic production and marketing. Sandy works with businesses across the country to oversee the organic certification of products, source organic ingredients, and develop organic system plans including pest control programs. Prior to joining WDA, Sandy worked for ten years in the creative department of Young & Rubicam, one of the world’s largest advertising companies.


Sue Wagner
SUE WAGNER, Associate and Sustainability Manager, performs technical research, materials review, and ingredient evaluations for NOP compliance. Sue also assists clients with applications for third-party material review programs (e.g., OMRI, CDFA Organic Input Materials Program and the Washington State Department of Agriculture), and the development of Input Compliance Plans. Additionally, she participates in the preparation of petitions to the National Organic Standards Board for the addition or removal of materials from the National List.  Prior to joining WDA, she held a variety of managerial positions in an environmental laboratory for over 16 years.