Maybe. You never know what is going on behind closed doors. Also they hired some big names lately and there is only so much room towards the top of the pyramid. I guess we'll never find out since he doesn't have to report(I assume) any sale not beeing an insider anymore.
the question is why would he sell at this point rather than wait a couple more weeks?? that makes me doubt that it is him. It could be other shakers who want better entry? either way it is interesting / intriguing. the worst would be the insider "automatic sales" things.