To put the answer in its simplest form, they sold HUNDREDS of millions of shares.
I hope this answers your question. If not, you have seen in the rapidly growing OS over the years, as well as the plummeting PPS, the results of their selling those hundreds of millions of shares. If you still don't see it, it's because you choose not to, and I can't help you there.
Don't ask a question if you don't want an answer.