Complex sentence: Before serving as CEO of Neustar, Hook held leadership positions at several Fortune 500 companies, including AOL, Time Warner and Viacom; as well as in venture capital firms and at the Federal Communications Commission.
Split into simpler sentences: Before serving as CEO of Neustar, Hook held leadership positions at several Fortune 500 companies, including AOL, Time Warner and Viacom. She also worked for venture capital firms and at the Federal Communications Commission.