No. But the whole point of a buyback is that it will presumably cause stock appreciation and that appreciation is taxable, albeit at a lower rate and not until the stock is sold.
Of course this state of affairs relies on companies not all jumping to stock buybacks, or else the treasury will find some new way of getting their pound of flesh
In the Netherlands, appreciation is immediately taxable for individuals, but not for corporations.
I presume you don't send a cheque off for €1.36 at the end of the day, (or receive a cheque back after 8 months)