OTC doesn’t use halts.🙂 Unless something causes a halt overseas, or an emergency event occurs. Success is not an emergency event. (Nor was the May 10 2022 bear attack) They don’t constantly put on the brakes like the big stock markets.
Can you trade NWBO using Robinhood? If so, they'll shut you down if there's a short squeeze. Why people have not gone to prison over that re: GME, I dunno. Wait, I think I do.