The name of the publisher varies.
Some early issues state: 'Published by E. H. Statham, York Street, Sydney'. However, by July 1838 Edward Smith Hall and Francis O'Brien were jointly listed as the publishers, printers and proprietors. From 1 July 1839, the publisher and proprietor was listed simply as 'Francis O'Brien & Co.' and while the newspaper was still printed at York Street, the place of publication was changed to George Street.
On 2 April 1841, the name of Francis O'Brien disappeared from the Monitor's pages, and the proprietor's name appeared as 'George O'Brien & Co.'.