I own $5k of a stock just admitted to the ISDX London OTC market. I'm a US citizen. Any major issues?

I've read I need to fill out a document if I hold more than $50k in over seas stocks but haven't found anything else. Anything else I need to consider or check out?

Submitted December 16, 2015 at 10:48PM by germican http://ift.tt/1IauCrW