Your right it could be as late as dec 2018. But ho

Your right it could be as late as dec 2018. But how would the company be able to guess that 10% of profits would allow them 100,000,000 reduction if it was so far away and so much could be different By then such as the pps?

I say it's much much sooner because for the company to calculate it accurately for both pps price and profit to say they can buy back 100 mil shares using 10% profit means its sooner rather than later.