About Mike

Serial Entrepreneur, Startup Mentor, Business Broker and Exit Planning Advisor, Real Estate Professional

Managing Director, SellBiz.us.

35+ years of experience starting, building, buying and selling businesses.

Licensed Business Broker and M&A Professional.

Luxury Real Estate and Investment Properties Advisor


Stanford University Graduate School of Business (EPGC)

University of Florida

Florida State University

Old Dominion University

Michael’s career spans 35+ years as a venture capital-backed entrepreneur, best selling author, and advisor. His expertise is starting, funding, buying and selling businesses — specifically, technology companies.

He founded Data Technologies, Ask-Me Multimedia, iCopyright.com, StartupBiz.com, and Leaves, Inc., among other companies. He was on the launch teams of CompuServe Sprynet, one of the first national Internet Service Providers (went public as part of CompuServe in 1996), and Design Intelligence (acquired by Microsoft).

Michael has raised more than $50M in venture capital and has orchestrated numerous company spin-outs, acquisitions and successful exits. He is an active angel investor and advisor, with investments in numerous early-stage companies. He has run an international high tech accelerator, a federally-funded entrepreneurial training program, and a venture capital fund.

As the Founder/CEO of StartupBiz.com, Michael has assisted more than 25,000 startups with strategy, financing and exits. As the Managing Director of SellBiz.us, Michael has assisted hundreds of small business owners to prepare for exit and achieve a successful sale. Michael also works with select clients on luxury home purchases and real estate investments in Florida’s beautiful Gulf Coast. 

Michael is the author of several best-selling books and a popular blogger and speaker on starting, buying and selling a business. 

Review more than 40 recommendations and references posted by Mike’s clients and colleagues on LinkedIn. 

"Mike O’Donnell is a master of his craft. His depth and breadth of knowledge for starting, scaling and selling businesses is unequaled in my experience. Working with him daily continued to show that Mike is flexible, knowledgeable, and broad based. His work ethic is at the top of the scale … never stopping until the job is done … and then implements continuous process improvement. A great attribute is the calm and steady way that he approaches any task."
Jack Moss
Former Business Owner, County Commissioner and Senior Executive

Highly Rated Books by Mike