FacultyFaculty/Author Profile

Susan H. Mac Cormac

Morrison & Foerster LLP

San Francisco, CA, USA

Susan Mac Cormac is a partner in the Corporate Department of Morrison & Foerster’s San Francisco office. She serves as co-chair of the Clean Technology + Alternative Energy Group and Venture and Private Equity Investment Practice. She has extensive experience representing start-up to late-stage private companies primarily in the clean technology or sustainable space, including ClimateEarth, Deep Water Desal, Drip Drop, EDF Renewable Energy, ElectraTherm, Hittite Solar, ICE Energy, MADA Power, Monolith Materials, Inc. OneSun, Planet Labs, Posiba, and Revolution Foods. Her representative social enterprise company clients include Change.org, Digital Divide Data, driptech, Medicines360 and Rising Sun Energy. Her nonprofit clients include Business for Social Responsibility, CERES, the Earth Genome Project, Goodwill, Pacific Forest and Watershed Lands Stewardship Council, The Nature Conservancy and Year Up. Her impact investor and venture fund clients include Capricorn/Virgo, Brightpath Capital Partners, Eagle Cliff Partners, Omidyar, Kleiner Perkins, Buchanan Investments, New Island Capital, Pacific Community Ventures, RSF Social Finance, Calvert, and OPIC. She also represents both Intel and SoftBank on late stage investments. She provides corporate and finance advice in connection with equity and debt financings, mergers, acquisitions, asset purchases and sales, reorganizations and joint ventures. She regularly advises boards of private and public companies on corporate governance and disclosure as they relate to sustainability and Corporate Social Responsibility (“CSR”) issues and has joined the faculty at both the Stanford Director’s College and the Northwestern Corporate Counsel Institute. In addition to her representation of companies involved with sustainability and CSR, providing advice to their boards on fiduciary issues, conflicts of interest, and other corporate matters, she has deep experience and expertise in structuring for nonprofit/for-profit “hybrids” and new corporate forms, particularly the Social Purpose Corporation (CA) and the Public Benefit Corporation (DE).

Ms. Mac Cormac was named by California Lawyer Magazine as one of the 2012 California Lawyers of the Year for her effective legislative change in California as co-chair of the Working Group for the Flexible Purpose Corporation. She was recognized by the Daily Journal on several Top Lawyers in California lists including Top 100 Lawyers (2012), Top Female Lawyers (2011 and 2012), and Top 25 Clean Tech Lawyers (2011). Ms. Mac Cormac was selected by her peers for Best Lawyers in America 2011-2014 and was named Best Lawyers’ 2014 San Francisco Energy Law “Lawyer of the Year.” She was also recognized by clients in Legal 500 United States 2009-2014 for her expertise working with venture capitalists and emerging companies. Clients say “you cannot get a better corporate counsel,” Ms. Mac Cormac “‘understands the big picture, could not be more responsive, and understands the business.” She is on the Board of Directors of the Sustainability Accounting Standards Board (“SASB”) and is professor at UC Berkeley School of Law, Boalt Hall, teaching a course on Social Enterprise. She is admitted to practice in both California and New York.


Williams College (B.A., 1988)
Duke University School of Law (J.D., 1993)
Duke University School of Law (LL.M., 1993)


Clean Technology
Emerging Companies + Venture Capital

Bar Admissions

New York


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