Complex sentence: David Bartley is a distant cousin of Jeff Higgins, and the Co-Founder and Stockholder of Higgins Sewing Machine Company and CEO of "Other People's Money", a very successful Grantville Investment Fund.
Split into simpler sentences: David Bartley is a distant cousin of Jeff Higgins. He is the co-founder and stockholder of Higgins Sewing Machine Company, and CEO of Other People's Money, a very successful Grantville investment fund.