In the past, the Cuban government has had to deal in cash when making payments in the U.S. The news could be a catalyst in thawing relations between Cuba and the U.S.
The news came a day ahead of what is expected to be the final meeting between the State Department and representatives of the Cuban government. The meetings could lead to the announcement of a re-establishment of diplomatic ties between the two countries.
Shares of Stonegate were up more than 2 percent early Wednesday afternoon.
—Reported by CNBC's Michelle Caruso-Cabrera, written by CNBC.com's Reem Nasr.