Rusal is now taking steps to loosen its ties to EN+.
Rusal CEO Alexandra Buriko tendered her resignation on Thursday. His departure follows those of the company's CEO and seven other directors, which were announced Thursday.
It was not clear what effect the blacklisting would have as many Russian companies have already sought to wind up their Ukraine-linked activities due to earlier sanctions. None of them have offered themselves for re-election at the company's annual meeting on June 28, when their tenures end.
"The business of newly sanctioned institutions accounts for less than 2% of our assets, so it will, of course, affect us to some extent, but we still need to see what happens to them, as talks on lifting sanctions for Rusal and some other companies".
"As at the date of this announcement, the company has not received any formal resignation from Mr Deripaska", it added.
'It should be noted that the US Treasury's list of senior foreign political figures and oligarchs was published after the applications and approvals [of the wealthy Russian individuals],' the response says.
The U.S. Treasury Department on Tuesday gave Americans until October 23 instead of June 5 to wind down operations and contracts with GAZ and said it would consider lifting the sanctions if Deripaska ceded control of the company.
Because of the sanctions of the action associated with the Deripaska companies RUSAL and En+ fell sharply.