[jkaptur]

Holding on to equity grants after they vest is probably a bad idea. It's precisely equivalent to using a larger salary to buy stock in your company. Is that what you'd do if you got a raise?

You should evaluate what your ideal investment mix is (keeping in mind that you already have a lot of exposure to the company where you work and have unvested equity) and always rebalance towards that. The source of income is immaterial.