Between April 2023 and March 2024, the investor — acting through a U.S.-based real-estate firm — mortgaged, renovated and sold a residential property in Atlanta that belonged to a person on OFAC’s Specially Designated Nationals and Blocked Persons List, in violation of U.S. sanctions and an earlier cease-and-desist order. The penalty serves as a strong enforcement signal that U.S. persons must not transact…