So long as the insiders don’t sell the shares before top line this is positive. Exercising options is taxed at income tax rates, but any gains from selling shares held for at least a couple of years is taxed at capital gains rates (which is half the rate on income).

Therefore, these insiders are optimistic and setting themselves up for maximum gain over a 2 year time frame. They must be optimistic because they are committing themselves to a higher tax bill this year.

I am not accountant! Just speaking from personal experience...