Investigators accuse the one-time oil company vice president of embezzling over 8 billion rubles ($329 million) from Yukos production unit Tomskneft as well as shares worth over 12 billion rubles ($493 million) from other oil companies, and of laundering the stolen assets.
Aleksanyan is pleading not guilty.
Lawyer Yelena Lvova said Tuesday: "Like you we have only just found out about it. This is rather strange, as before submitting the case to court, they should have provided us with a copy of the indictment, but this has not been done."
The Russian Supreme Court rejected Aleksanyan's appeal against an earlier ruling extending his custody during a closed court hearing, although a similar case had been heard in an open court the previous week.
Lvova said last week Aleksanyan could sue prosecutors after it was revealed that he had been diagnosed with AIDS and during his imprisonment had also become infected with tuberculosis.
Once Russia's largest oil producer, Yukos collapsed after claims of tax evasion, which led to the company being broken up and sold off to meet debts. The bulk of its assets were subsequently bought by government-controlled oil company Rosneft.
Former Yukos CEO Mikhail Khodorkovsky is serving an eight-year prison term for fraud and tax evasion. He has consistently maintained his innocence calling the accusations politically motivated.
