Answer
Not from the standard end-user Users page directly — that specific export option isn't available there. It is possible from the separate Oracle Users window, using Output Channels to export that list. For a more complete or flexible export of user account data, use the Data Migration functionality, or write a plain SQL script querying the underlying database tables directly — either approach can pull the full set of user account data without being limited to what the Oracle Users window's Output Channel exposes.