CEO resignations, ok having a list appears to be great. Be aware of one thing though, ofter CEO positions are time limited (not lifetime) anyway.
Just observe the ACC corporation in NZ, a no fault no sue system that quite rightfully has attracted fair criticism for decades, even from the UN, Their CEO's do get replaced, they have been very well paid, but nothing changes. Any detrimental effect of the corporation under the CEO term never appears to have any effect on the CEO. So list resignatons, it is when ANY harm done those CEO's knew about gets fairly settled then things may change…in the meantime, ceo's to get replaced often.