Don Reisinger reporting for CNET:

Citing industry sources, The Wall Street Journal reported today that Zynga CEO Mark Pincus, along with his top executives, decided last year as they were preparing for an initial public offering (IPO) that they had given out too much stock to employees. But rather than accept that reality, the executives reportedly tried a different tactic: demand employees give back not-yet-vested stock or face termination.

That’s one way to increases shareholder value.