I see you are looking at the rams list where it shows a 4 and four sixes. The problem is that teams are capped at 4 comp picks for players. So Fox's contract is worthy of a sixth compensation pick, however it does not count as the rams had already received four comp picks prior to his contract coming up. So we do not get any compensation for that player loss.
We get a 3rd for Holmes (which does not count toward the max of 4), then the 4 and three 6s for the players who signed elsewhere.