Leo Mariani, CFA

Managing Director, Senior Research Analyst



Leo Mariani, CFA is a Managing Director, Senior Research Analyst at ROTH MKM. He joined MKM Partners in June 2022 from Key Banc Capital Markets before the acquisition by Roth Capital Partners in 2023. With 24 years of experience, he has an extensive background in covering the Oil and Gas Exploration and Production sector as well as selecting Renewable Energy names. He has spent 19 years in equity research and almost five years in investment banking. Previously, he held the position of senior E&P analyst at RBC Capital Markets for nearly ten years and has also worked at Jefferies and NatAlliance Securities. Additionally, he has worked in investment banking roles at both PaineWebber and UBS, covering various energy industry and utilities subsectors.

Mr. Mariani's stock picking abilities have been recognized, as he was ranked #2 globally by TipRanks in 2021 and #2 in the energy sector by the Wall St. Journal's Best on the Street survey in 2007.

Mr. Mariani graduated with honors from Brown University, holding a double major in Business Economics and Organizational Behavior and Management. He is also a CFA charterholder.


Joined Roth

February 2023

Sector Focus



A.B. from Brown University


MKM Partners; Key Banc Capital Markets; NatAlliance Securities; RBC Capital Markets; Jefferies; UBS; PaineWebber