[daxelrod]

Fog Creek's model tends to involve spinning off their runaway hits into separate companies. They've done this with StackOverflow and Trello. Trello has been an independent company since 2014. (Although I'm not sure what kind of ownership position Fog Creek had).

[Kiro]

Why would Fog Creek give away any ownership?

[hueving]

It's called raising funding. Many companies do it to scale faster.