Kirk Posmantur

Chief Partnership Officer, Board Member, Founder
  • Founder and CEO, Axcess Worldwide
  • Serial entrepreneur  
  • Early Investor/Co-Founder: Fiji Water, Tequila Avion, Captivate, Ring, Flexport, Professional Fight League, Sharecare, One Hope 
  • Founder, The Great American Turkey Co. & Great American Plant Co.
  • University of Nevada, Las Vegas (BA), The William F. Harrah College of Hotel Management

I’ve spent my entire career connecting extraordinary people, brands, and platforms and creating partnerships that drive measurable results and value creation. 

At 25Madison, I help entrepreneurs build and scale their business concepts and ideas.  With my sleeves rolled up, I work side by side with our founders and brands to leverage our vast global relationships and experiences to help accelerate their individual businesses. 


My family and I love living a bicoastal life in Flatiron & Del Mar.  We enjoy all the extraordinary treasures of NYC and the beaches of SoCal.  I’m beyond passionate about philanthropy, the NBA, Soul Cycle and insane food. 

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Work with us

Building businesses is in our DNA. We’re a small but mighty team of tinkerers, designers, geeks (the cool kind), operators, business moguls and everything in between. Wildly strategic, yet so deep into it that we’ve got the scars to prove it.

Whether it's with the 25m Studio, 25madison Ventures,  25m Health, or 25m Create, we’re looking for great people who love their work, solving problems, and having fun. Jerks need not apply.