Directors and Officers

Our Directors and Officers are community leaders who commit substantial ongoing time and expertise to directing CO$T’s activities.

Director and Board President Mimi Willard is CO$T’s founder. A Chartered Financial Analyst, Mimi contributes financial and budgetary expertise accumulated over twenty years as a top-ranked financial analyst.  She served Reed College as a trustee and member of budget, finance, and investment committees.  Mimi is committed to working collaboratively with taxpayers and jurisdictions to find approaches that are fiscally sound, fair, and affordable to Marin’s residents.
Director Carsten Andersen, has comprehensive financial experience across a broad spectrum of businesses. He is the former President of a publicly traded international logistics company. He currently serves on the Board of two private companies and is President of Horse Hill Capital, a consulting firm assisting companies in the logistics and supply chain space. Carsten worked extensively with the core group on the capital campaign for the Mill Valley Recreation Center and served as Taxpayer Representative for Mill Valley School District. Carsten has been on the Board of “Trips for Kids” and is the former President of Marin Cyclists. Carsten is a graduate of the Copenhagen School of Economics and Business Administration.
Director Paul Premo has extensive professional experience as a senior finance executive and property tax manager at Chevron, and more recently as an independent energy consultant to Fortune 500 corporations. He has served as Marin County Civil Grand Jury Foreperson Pro-Tem and Chair of its Finance and Administration investigations committee. Paul is Taxpayers’ Representative on Transportation Authority of Marin’s (TAM) Citizens’ Oversight Committee and College of Marin Bond Measures B and C Citizens’ Oversight Committee. Paul is a Board member of Marin Coalition, and for several years was a Core Group member of Citizens for Sustainable Pension Plans. Paul is the independent Board Director of Allied Propane Services Corp and its new Napa Clean Fuels facility. He earned his Bachelor’s and Master’s degrees in Chemical Engineering from Manhattan College and MIT, respectively.
Director Doug Kelly was elected to the Ross Valley Sanitary Board in June 2016 and has served as the President of the Board. Doug also serves as the Vice Chair of the San Anselmo Chamber of Commerce, and also is a Director on the Governing Board of the Marin Emergency Radio Authority. He is the Vice President of San Rafael based Performance POS a company that sells and supports POS technology and Digital Video Security Systems. Doug has previously served on the San Anselmo Town Council and prior to that served eight years on the Parks and Recreation Commission.
Director Laura Effel is an independent arbitrator, serving on panels of the American Arbitration Association, and a member of the New York bar.  She is also business manager of a small food ingredient manufacturing company.  She served on the 2013-2014 Marin County Civil Grand Jury and chaired its Law and Justice committee.

Treasurer Harris Holzberg, ChFC, CLU, is a Chartered Financial Consultant, the owner of Holzberg Wealth Management, and has long served as a Securities Expert Witness in arbitration and litigation. Harris specializes in the range of personal financial matters, including taxes, and has long served on the boards of non-profit organizations. In local government, he was appointed to the Corte Madera Park & Recreation Commission and served as its Chairman. Harris is a member of the Board of Directors of the Northern California Junior Lacrosse Association and has been recognized for his volunteer work by being elected to the US Lacrosse NORCAL Hall of Fame.

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