With the approval of the board of directors (in most cases), a company can simply create new shares and give them to whomever they like.
I would guess that this information will bother you.
If it helps, because many public company executives are compensated on earnings per share, most C level teams are incentivized to buy back shares, thus decreasing the denominator for the EPS calculation without changing fundamental economics of the company.
If this also bothers you, you should guess what Buffet says and thinks about those two dynamics, and then read up on it, and you will learn something interesting about public markets!