Advanced Emissions Solutions, Inc. announced that Mr. Robert "Bob" Rasmus has been appointed to succeed Greg Marken as the Company?s Executive Officer on July 17, 2023. Mr. Rasmus is the founder and former Chief Executive Officer of Hi-Crush, Inc., a fully integrated provider of proppant and logistics services for hydraulic fracturing operations. He also led Hi-Crush through a successful restructuring following the unprecedented impact of the COVID-19 pandemic on the Company?s operations.

Prior to founding Hi-Crush, Mr. Rasmus was the Co-Founder and Managing Partner of Red Oak Capital Management. Previously, Mr. Rasmus was President of Thunderbolt Capital Corp., a venture firm focused on start-up and early-stage private equity investments. He also previously was a Senior Managing Director of Banc One Capital Markets, Inc. and a Managing Director and Head of Investment Banking in London for First Chicago Ltd. Mr. Rasmus holds a B. A. degree in Government and International Relations from the University of Notre Dame.