  Despite being extensively studied since their initial discovery in 2003, the
XYZ states do not yet have a clear interpretation. BESIII recently collected
additional data above 4 GeV which can be used to further study these exotic
hadron candidates. We present recent studies of $X(3872)\to\pi^0\chi_{c0}$,
$e^+e^-\to K^+K^-J/\psi$, $e^+e^-\to$ light hadrons, $e^+e^-\to
D^{*+}D^{(*)-}$, and on the $Z_{cs}(3985)$.
