Abstract: A tree stand (10) for supporting a person such as a hunter or photographer at a selected elevation above the ground by securing the tree stand (10) to the trunk of a tree. The tree stand (10) includes a seat assembly (112) connected to a platform (12), the seat (112) being movable with respect to the platform (12) and the platform (12) being collapsible to reduce its overall length and width. The platform (12) includes a plurality of extendable panels (18) positioned one next to another, each including a plurality of extension sections (20) cooperating one with another in telescoping fashion. Extension locking mechanisms (50) are provided to selectively lock the relative position of each extension section (20) at least within its receiving extension section (20). A securement assembly (80) is provided for securing the platform (12) to a selected tree and includes at least a retaining strap (82) and a tree engagement device (98).