Mark brings 20 years of experience in the sustainability movement working with environmental organizations, sustainability orientated investment firms, pension funds, companies, LCA initiatives, and ESG ratings and research providers to advance CSR initiatives and environmentally and socially responsible and sustainable business practices.

Mark helped launch and serves as Program Director for GISR, a global sustainability ratings initiative (GISR - www.ratesustainability.org).

Mark served as the first full-time employee of CERES, a global network of investors, non-profit organizations, and corporations. Marked worked in senior leadership positions at Citizens Funds (first SRI mutual fund to reach $1 billion AUM), the Nature Conservancy (initiated a $60 million capital campaign), Greenpeace, KLD and Institutional Shareholder Services (ISS) before launching S-ROI.