Greg Marken

Interim President, Chief Executive Officer and Treasurer of Advanced Emissions Solutions, Inc. (“ADES”) since July 2020.

Prior to his appointment as Interim President and Chief Executive Officer, Greg served as Chief Financial Officer, Treasurer, and Secretary of ADES from March 2018 through June 2020.

In addition, he previously served as Chief Accounting Officer and held various other roles with ADES. Greg has over 15 years of experience related to accounting, finance, and leadership of various teams.

Prior to joining ADES, Greg was a Senior Manager in the assurance practice at Ernst & Young, LLP in both Dallas and Denver, where he served a variety of public and private clients.

Greg received his B.S. in Accounting and M.S. in Finance from Texas A&M University. Greg is a licensed CPA in Texas and Colorado and is a member of the AICPA and the Colorado Society of CPAs.