On 21 August, OFAC add 2 Russian individuals, 3 Russian shipping and logistics companies and 1 Slovakian company to its list of designated persons and entities. It also added 6 Russian-flagged vessels said to be linked to one of the Russian companies – GUDZON SHIPPING CO LLC.
https://www.treasury.gov/resource-center/sanctions/OFAC-Enforcement/Pages/20180821.aspx
The Trump administration has levied new sanctions against Russian firms it accused of violating trade bans on North Korea and breaches of US laws against co-operation with Russia’s intelligence services.