You need to talk to Fidelity in person. They will help you move things around so you can purchase any vested stock, so it is 100% yours. I accrued a massive amount before I originally left over a decade ago, and as soon as my two week notice was received by HR everything was frozen, since it was the granted stock and it hadn’t been put in my own separate account yet. Long story short Fidelity attempted to argue on my behalf but I ended up losing thousands 😓since the stock was originally bought at such low prices.

Hi! I’m on a similar boat here. I have 8 shares but 4 of them mature in November. I am waiting for the day they mature to leave. My plan is to move them into my own Fidelity account and just keep them for the time being. If you leave before any of them mature, you lose them. Hope this helps!