On 4th June OFAC issued Ukraine-/Russia-related General License 16 which authorises US persons to engage in specified transactions related to winding down or maintaining business involving EN+ Group PLC, JSC EuroSibEnergo, or any entity in which EN+ Group PLC or JSC EuroSibEnergo owns, directly or indirectly, a 50% or greater interest, until October 23rd.
https://www.treasury.gov/resource-center/sanctions/OFAC-Enforcement/Pages/20180604.aspx