CEO age and firm innovation: evidence from IT industry in Korea

This paper investigates the relationship between CEO age and firm innovation measured as innovation productivity (i.e., the number of patent applications) and innovation scope (i.e., technological proximity). Using a sample of 8589 firm-years that eliminate differences in characteristics between firms with young CEOs versus old CEOs, listed in the Korean stock markets for the sample period of 2002-2016, we document that a firm's innovation productivity or innovation scope decreases in CEO age. We also report that younger CEOs in IT firms are more likely to participate in firm innovation than those in non-IT firms. Our main results are robust in Tobit, Poisson, and negative binomial regressions and in specification of CEO-fixed effect models. We also find same results in further analyses considering CEO tenure, firm age, and CEO overconfidence. Taken together, younger CEOs in IT firms may be more motivated to signal their innovativeness to the CEO market to be regarded as outstanding innovators or adventurous innovators, which supports managerial signaling hypothesis for young CEOs.