Board Structure and Monitoring: New Evidence from CEO Turnovers

Board Structure and Monitoring: New Evidence from CEO Turnovers

Lixiong Guo, Ronald Masulis

Series number :

Serial Number: 

Date posted :

July 01 2013

Last revised :

February 26 2013
SSRN Share


  • CEO turnover • 
  • Nominating Committee Independence • 
  • board independence • 
  • Sarbanes-Oxley act • 
  • Endogeneity

Changes in board composition mandated by new NYSE and NASDAQ listing rules following the Sarbanes-Oxley Act (SOX) are used to estimate how overall board independence and nominating committee independence affect board oversight of management.

We find firms forced to raise board independence or to adopt a fully independent nominating committee exhibit greater forced CEO turnover sensitivity to performance relative to firms previously compliant. We show that more rapid post-SOX CEO turnover is not indicative of premature firing since stock and operating performance improve following these CEO turnovers and stock market reactions to CEO turnover announcements are no more negative in the post-SOX period than in the pre-SOX period for the previously noncompliant firms. Thus, we conclude that more independent boards and fully independent nominating committees lead to more effective CEO monitoring and discipline. Our nominating committee independence finding has important policy implications given the intense post-SOX debate on the costs and benefits of regulating board composition.


Real name: 
Lixiong Guo
Research Member
School of Banking and Finance, Australian School of Business