If the company wants to encourage "above and beyond" performance, they should do that through a bonus. In all scenarios I'm familiar with, shares vesting are tied to duration at the firm, i.e. loyalty and "toughing it out". The employee forfeits the right to those shares either by leaving the firm early, or being bad enough at their job that they get fired. This is of course the latter, but the timing is the problem. Had they fired this employee five months ago, it would have appeared less like yanking the rug from under them. But as you show, perceptions differ