This is the same court where Kremlin critic Vladimir Kara-Murza was just convicted of treason and sentenced to prison on Monday.
Media were allowed in the courtroom at the start of the hearing before being ushered out and will be permitted to return at the end of the hearing.
Speaking outside the court after the hearing, Ms Tracy said she had been given access to Mr Gershkovich for the first time on Monday and that he was in "good health and remains strong despite the circumstances".