“…In general, a CEO passes several milestones and career steps, which is why CEOs are age, on average, 50 years or older (Chemmanur et al, 2009;Kaplan et al, 2012;Custódio and Metzger, 2014;Graham et al, 2015;Pan et al 2015;Dittmar and Duchin, 2016). Finance literature defines expert knowledge in a certain industry, when someone has gained experience in leading positions in that specific industry (Custódio & Metzger, 2013;S. Huang, 2014;Wang, Xie, & Zhu, 2015).…”