[dchichkov]

From pure math perspective that 1-yr cliff + 4-yr vesting function should be imperfect for employees AND for companies. Because of uncertainty of stocks ownership and a potential to create sharp conflicts of interests, lawsuits, etc. at the discontinuity. It is fine to have decelerated of accelerated vesting schedule. But there should be no discontinuities.

On the other hand, from a human perspective maybe having such conflict of interests is actually good. It gives a chance for CEO to show his true colors earlier and consequently for employees to take note and re-estimate the risk of having the same experience at some later time or even during the exit.