> Zendesk is also Danish originally, Tradeshift is, Podio.. they all end up leaving because the market opportunity in Denmark is very small (6mio) and there isn't easy enough access to talent when you need to scale up
Podio mostly had a sales-office in SF; most development was in Copenhagen (until Citrix moved most of it to North Carolina half a year back or so)
While I'm not aware of their legal statuses, both Zendesk and Tradeshift has non-trivial amounts of development in Copenhagen.
Realm moved (and was part of Ycombinator, even) and then moved back to Copenhagen.
Falcon.io always had most of their development in Copenhagen and only really moved sales elsewhere.
It generally seem to me that they take a few semesters stateside to get known/funding/... and them move back. I've heard access to talent, employee mentality and "founders' wanted kids to grow up sane" amongst reasons for moving wholly/partially back.