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Greg Trimarche

Board Director

Mr. Greg Trimarche has practiced law for over 30 years in the areas of environmental and energy law and a wide range of other governmental and regulatory fields, as well as finance, intellectual property, general commercial litigation, and strategic planning and risk avoidance.

His work focuses on emerging companies in the renewable energy and cleantech industries, where he identifies and evaluates early-stage companies seeking to go public, strategic acquisition targets, strategic partnership opportunities, and other investment opportunities in the energy sector. Greg’s experience also covers federal and state energy and environmental regulatory programs, as well as the various governmental incentive programs relating to the energy and utility industries.

Greg has been of counsel to the law firm Cooksey Toolen Gage Duffy Woog since 2017 and, prior to that, has been engaged in the private practice of law since 1989. In 2010, Greg co-founded Sustain SoCal ( (formerly, CleanTech OC), the clean technology trade association for Orange County, California, and served as its President and Chief Executive Officer from 2010 to 2015. In addition, Greg is a frequent speaker at cleantech industry conferences. Greg is a past member of the Board of Directors of OCTANe (, the fundraising and networking organization for Orange County’s technology industries. Also, since 2015, he has been an officer and director of GST Factoring, Inc. (“GST”), a company formerly engaged in electronic payment processing services to law firms that represented student loan debtors. Greg earned a Bachelor of Arts in Political Science and Economics from University of Kansas and a Juris Doctor from University of Kansas School of Law.