Perhaps create a batch file with 25 lines, changing the Company code for each line - issue a pause statement between executions to allow time for the import to complete.
..\MAS90\Home\Pvxwin32.exe ..\launcher\sota.Ini ..\SOA\Startup.M4P -ARG DIRECT (UI State) (User Logon) (Password) (CompanyCode) (Program Name) (Program Argument)