Denis Blank

CIO at Sienna Capital

Denis Blank joined Sienna Capital in 2018 as the Chief Investment Officer.

Before joining Sienna Capital, Mr. Blank previously was the Chief Investment Officer of a family office that he joined in 2011.

He started his career at Bank of America Securities where he was an analyst for 2 years, before joining Natural Gas Partners as an associate, a private equity fund based in Texas, USA, and founded by Ken Hersh, focusing on the energy sector. He also was a partner from 2004 to 2013 at a hedge fund focused on Global Emerging Markets.

Mr. Blank holds a BA from Southern Methodist University and an MBA from the Stanford University Graduate School of Business.


  • CIO

    Current role

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