How to Steal a Company

[CrazyAuthor]

Hi, forgive me if this post is wasting people’s time, but it's worth a try because I’m really stumped for ideas.

I am in the process of writing a fictional comedic tale revolving around a privately owned company, but unfortunately I’m not too familiar with business law, particularly US law.

My question. What is a good simple way for my antagonist to steal a privately owned company from the story’s hero, without getting caught?

Or, alternatively I could change it to a public company in which case, how can my antagonist steal shares from the story’s hero without getting caught?

I suppose it may not even be possible, which means I’ll have to resort to the old cliché of using blackmail.

Any help will be greatly appreciated. Thanks.