Sort of related.
I worked for a start-up, and had a fair amount of stock when I signed up, and more at annual reviews.
As it vested, I bought it.
The day came when a large company (investment company) came along and decided to buy them.
They priced the company based upon the current estimated value of the stock. Of course, the founders had most of it, and their share value was in the millions.
This company wanted to own 100% of the stock, so used the clause in the stock agreement that the company could buy back the stock at current value before an IPO.
The owners pretty much insisted that all employees needed to get something out of the deal, so they said they would pay for all options, vested or not, purchased or not.
That way everyone would walk away with some money.
Everyone, that is, except those of us that actually had all our options vested and had purchased them.
We basically got our money back.
Wasn't cheating, but it felt like it.