To be clear, it's an accounting artifact, NOT what he actually makes per year -- as the rest of the sentence might clue the reader into:

> which marked a staggering 3,474% increase from the previous year

For whatever reason, Google pays their CEO using a "triennial" stock award. It vests over 3 years.

So just to be accurate, his yearly compensation is more like $75 MM. Still obviously a lot of money for anyone, but now a number that actually makes sense to compare with other CEO's.