> * As long as you maintain more than 50% ownership, you're still the owner*

Maybe pedantic, but here goes: If you have given away so much as a single share, the usual phraseology is that you are "part-owner", because you own only a part. Saying "The owner" implies there is only one, which is false.

If you declare to the other shareholder that you are the owner, you might find an interesting reaction.