In Tables 3 and 4 we add additional explanatory variables to the analysis. Instead of
using a single summary variable to measure ownership concentration, we employ four dummy
variables in order to examine the importance of the different ownership concentration categories
and omit the least concentrated category, conc 1. We also include dummy variables for groups
that have ownership control.17 Table 3 analyzes management board salaries and Table 4
analyzes supervisory board salaries. In both tables three equations are estimated using OLS
fixed-firm effects and generalized method of moments using instrumental variables (GMM IV).
All reported coefficients are heteroscedastic-consistent parameter estimates. Time dummies
were also included in the regressions. The first equation in each set of equations includes the
concentration dummies and four ownership dummy variables but excludes the bank influence
variable because it is highly correlated with bank ownership. The second equation excludes the
concentration dummies and the third excludes the ownership dummies.