> -person quits right after stocks vest which upsets boss who put extra effort into helping them That's one reading, but unless we assume that OP is straight u

> -person quits right after stocks vest which upsets boss who put extra effort into helping them That's one reading, but unless we assume that OP is straight up lying in their description of events, the boss was lying to them about whether they were on a PIP or not, and had given them no indication that their performance was flagging until suddenly doing this to them. It doesn't sound to me like the boss put in extra effort.