Last month, JPMorgan & Chase started to allow holders of depositary receipts in Russian companies to cancel them, two sources familiar with the matter said, giving some investors a way to liquidate what have largely been frozen holdings due to the conflict in Ukraine.

Several major Russian companies have listings abroad, which has always been a matter of prestige for them. But since Russia began what it calls a "special military operation" in Ukraine on Feb. 24, Western bourses have halted trading of Russian securities.

Some Russian companies have been granted permission from the government to keep their depositary receipts programmes. Gas producer Gazprom was among those which decided to cancel it.

Rosneft has not yet stated its plans about its GDR programme. Rosneft's GDRs, issued in 2006, account for 4.8% of its total share capital.

(Reporting by Reuters; editing by Jason Neely)