In 2012 they had a surplus of more than $100,000,000 though...
And still, $30,000,000 for administrative cost? $45,000,000 for marketing? (never saw any ads for firefox, did you? I have no idea what they spent so much money on)
It isn't hugely informative, but I would guess that the $9 million in office leases mentioned towards the end is categorized as an administrative cost.
Marketing is not just ads. They support a lot of projects like the Stupid Shit No One Needs & Terrible Ideas Hackathon[1], the Gigabit Community Fund[2], the Hive NYC Learning Network[3], and many more, which probably are itemized as marketing.
