Michael Gruber

Michael Gruber has extensive experience with early-stage companies, primarily within the IT, media, and renewable energy sectors. Gruber has also founded/co-founded a number of businesses, including G4 Capital LLC, a strategic advisory group, Cornerstone Angels, a group of high net worth individuals focused on making early stage investments within the Midwest, and Opson, Inc, a sales and marketing lead generation company. Gruber serves as a Partner and Managing Director of Rainmaker Securities LLC, a business active in private placements and M&A activities for emerging growth companies. He previously served as a Managing Partner at SCIUS Capital Group. Gruber also draws on his experiences from senior roles in Taproot Ventures, blaxxun interactive, Intuit, InsWeb, and Silicon Investor.


Mr. Gruber earned a Masters of Business Administration from the Kellogg School of Management at Northwestern University and a Bachelors of Arts from the University of Pennsylvania. He currently serves on the Board of Advisors for AOTMP, Inc. and Factory Physics, Inc. Mr. Gruber is an active member of the Angel Capital Association and sits on a national Syndication and Collaboration sub-committee. Mr. Gruber is also a frequent speaker and panelist relating to entrepreneurship and venture capital. He holds a Series 7 & 63 license.


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