This study examines the impact of director tenure diversity on board effectiveness. We find that tenure‐diverse boards exhibit significantly higher CEO performance‐turnover sensitivity and that firms with tenure‐diverse audit committees are less likely to experience accounting restatements. Furthermore, we document that tenure‐diverse compensation committees also award less excess compensation and are less likely to overcompensate. Even though tenure‐diverse boards seem to exhibit superior monitoring performance, there is limited evidence that their firms exhibit superior financial performance. The findings suggest that recent calls for board renewal, to the extent that it would increase tenure diversity rather than just decrease average board tenure, may help enhance board monitoring.

ABSTRACT A CFO gap arises when the CFO position is left vacant for a period between the departure of the old CFO and the appointment of a new CFO. We find that CFO gaps are fairly common; over the sample period 2004–2016, approximately one-third of CFO turnovers are associated with a CFO gap, lasting, on average, two quarters and two months. CFO gaps are more likely for firms that face more labor market search frictions and with financial reporting and performance issues, and are less likely for firms with succession plans and with greater growth opportunities. While CFO gaps are not associated with significant changes in firms' financial reporting quality, they are associated with significantly negative changes in firms' voluntary disclosure frequency and analysts' forecast quality. Our findings shed light on the factors that influence top executive gaps and the impact of such gaps on firms' information environment.