Results of searches for supersymmetry in events with a single, isolated electron or muon are presented. The data set
comprises proton-proton collisions at a centre-of-mass energy
of 13 TeV, recorded by the CMS experiment. The results are
interpreted in models of strong production of supersymmetric
particles, with decay chains yielding third-generation or light
quarks, a lepton, and missing transverse energy.