U.S. Senate Select Committee on Ethics:
Report of the Secretary of the Senate, semiannual, salaries and expenses of Senate offices and officers. Includes reports from individual Senator's offices
Information on personal income/assets of Senators is not published. Reports are submitted to the Secretary of the Senate and are available for individual Senators upon written request. Report length varies. Also deposited with the Secretary of State for the Senator's home state. Each state's secretary of state has reports for their own Senators only. For links to the secretary of state for any state, see the NASS Contact Roster (National Association of Secretaries of State)