Charlie Vanderhorn used to work for the American Freedom Corporation, funding Jacob Winograd's research. However, Jacob and Farnaz ended their cooperation with with the American Freedom Corporation as they were afraid what they might do with their research. Jacob was convinced Charlie Vanderhorn was the one who killed him due to his research[1].
When Alma tracked him down, he denied having interest in Jacob's research, claiming the work he gave them was nothing. He then told Alma to stop looking because she wouldn't find anything[2].