Please read below, then maybe you will understand.
--- Quoting from poster dawginlife in another thread:
scroll to section "SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT" in the link below. in this section, you will see how many shares management controls. e.g. David Aviezer, has stocks and options equal to 2,253,564 shares as of 10/4/10. on 5/2/2012, where Aviezer exercised and sold 450,000 shares and still holds 1,803,564 shares. i hope, you can do the math for the others.
--- Quoting from poster jarretthines in the same thread:
You don't even have to scroll down that far. Just below the sell is a section that shows an equal number of options exercised that day and just below that is another set of options he purchased that same day. You might also note that is the case for all mangement, so suffice to say they actually increased their holdings.