A sign holder assembly for a shelving system, in which the shelving system includes a first support post and a second support post, with each support post configured to support a side of a shelf, includes a cross member configured to be coupled to and extend between the first support post and second support post. The assembly further includes a support bracket having a base member configured to be positioned about a portion of the cross member in one of a plurality of positions along a length of the cross member, an extension portion extending from the base member, and a securement member projecting from the extension portion and spaced from the base member.