What I imagine happened based on hints of what Ms Mayer wrote is that the breach affected all employees bonuses for 2016. Ms Mayer would have been under pressur

What I imagine happened based on hints of what Ms Mayer wrote is that the breach affected all employees bonuses for 2016. Ms Mayer would have been under pressure to forego her bonus and put it into the general employee pool and even then bonuses are likely much lower than previous years.