I see an odd discrepancy with the numbers on the tables having to do with sign-off lines. The first table on page 10 seems to be individuals who have signed off on patches and how many sign-offs they have given. Then they do the same table but assign people to the companies they represent. Based on the cover of the document Greg KH is employed by the Linux Foundation. That alone would mean that the Linux Foundation should have at least 9,965 sign-offs due to Greg alone. However if you look at the company table they are listed as only having 9,561. I'd imagine this is just a bug in their scripts but its worth trying to figure out and fix.