Without wanting to stir things up, this could be related to the good performance of the front office rather than the board. Boards manage financial accounts, appoint key staff etc whilst the CEO and appointed staff do the actual negotiations and sponsorship stuff (sometimes with the imprimatur of the board or its Chair and often not.) It may be that the owners should get credit for some of this.
The (apparent) stability of the board and ability to stay out of the press is probably more important in reassuring sponsors of good value, plus the benefit that Kaspersky have been able to enjoy in sales - after all it is a financial arrangement.