I maintain a database on forced CEO turnovers together with my co-author Alex Wagner (University of Zurich). It contains the dates of forced CEO turnovers of all firms recorded in the ExecuComp database between 1993 and 2018. It is updated periodically to include more recent data. The file is a merged, cleansed, and extended version of data used in Jenter and Kanaan “CEO Turnover and Relative Performance Evaluation”, Journal of Finance, Vol. 70 (5), pp. 2155-2184, 2015 and Peters and Wagner, “The Executive Turnover Risk Premium”, Journal of Finance, vol. 69, no. 4, pp. 1529-1563, 2014.
The construction of the dataset has also benefitted from turnover data generously provided to us by Andrea Eisfeldt, Cami Kuhnen, Greg Nini, Luke Taylor, and Ofer Eldar. If you are interested in the dataset, please send an email to firstname.lastname@example.org.