Heavy flavor spectroscopy results from CMS

The observation of the $B_{s2}^{*}(5840)^0$ $\rightarrow B^{0}K_{S}^{0}$ decay and the evidence for the $B_{s1}(5830)^0\rightarrow B^{*0}K_{S}^{0}$ decay by the CMS experiment are reported, as well as the study of the $\mathrm{B}^+\to\mathrm{J}/\psi\overline{\Lambda}\mathrm{p}$ decay, performed using the data collected in proton-proton collisions at $\sqrt{s}=8$\,TeV. In addition, the observation of the $\Lambda^0_{\mathrm{b}}\to\mathrm{J}/\psi\Lambda\phi$ decay and measurement of its branching fraction, relative to the $\Lambda^0_{\mathrm{b}}\to\psi\mathrm{(2S)}\Lambda$ decay, using the proton-proton collision data collected at at $\sqrt{s}=13$\,TeV is presented.