Has been the lower ask since 4/13/2015. IMHO, the seller is one of those that bought on the latest secondary. He is probably hedging by selling the stock and keeping the warrants.
Happening to OHRP, will happen to LPTN. Both companies have similar products on P2, but LPTN has another one on P2, and one starting P1 this month. LPTN has only 19M shares outstanding and a Market Cap of only $ 57M.