Mark Goldstein

Mark Goldstein

Managing Partner, Efficient Capacity LLC Founder, Bad Ass Advisors

Twitter: markgee
Tiburon, California, United States
Accredited investor
Member since October 08, 2007
24 Splash Points
1 vote
7 companies followed
1 competition judged
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Investor interests
1985 Penn , BS

I am a(n):


If you are an entrepreneur, why?

I want to change the world.

What's most frustrating and rewarding about entrepreneurship/innovation?

The highs
The lows
The sales win, the client losses.

What's the No. 1 mistake entrepreneurs make?

Hiring badly

What are the top three lessons you've learned as an entrepreneur?

Know your partner(s)-inside and out
Understand the motivations of your investors and stakeholders
Don't partner too early

Full bio

I run an investment fund called Efficient Capacity LLC that oversees over 400 private investments made since 2004.  We invest in 2 to 3 companies/month typically writing $500,000 checks.  Our interests are in health care, SaaS, iOt/devices, energy and ag tech.

I also recently founded Bad Ass Advisors, a private curated network that connects bad ass companies with bad ass founders.  Visit www. to sign up or review.

I've been involved in online services since 1983 when I got my first job at Apple and was put in charge of home investing, banking and online gaming. I enjoy the rush of being the underdog with a new project and changing people's perception of the status quo. I've led industry trade associations, been a member of numerous founding teams and personally started a dozen companies. I'm driven to solving interesting, marketing-related problems in big known sectors and being a part of a smart heads-down team where everyone has dirty fingernails. I've also concluded it takes almost as much time and energy to solve a big, fun problem as a smaller, dull one---so I mise as well think BIG and surround myself with a hungry, wicked focused team of brainiacs.


Starting and/or helping to guide Internet-related companies that help consumers and businesses better control their destiny. I'm also been an active angel investor, Board member and/or Advisor to over 100 firms.