David Hamilton Koch is the co-owner and the executive vice president of Koch Industries along with his brother Charles Koch. Besides being a philanthropist and an activist, Koch is a chemical engineer. At Koch, he owns 42% of the company.
He was born on May 3, 1940 in Wichita, Kansas, US. In 1959 he graduated from Deerfield Academy prep school in Massachusetts. Following his brother's footsteps, he joined Massachusetts Institute of Technology from where he also graduated with a dual degree, a bachelor and a master in chemical engineering in 1963.