Spectrum of iPTF13bvn at 306 days past explosion (+290 days after maximum light), compared to several stripped-envelope core-collapse SNe at similar ages from Modjaz et al. (2008, 2014), Maeda et al. (2007b, SN 2005bf), and Maeda et al. (2008, SN 2004gq).The phase of the spectra in days are with respect to the time of maximum light. The prominent emission lines that come from the SNe are indicated with vertical grey lines. The spectra are normalized to the peak of the [O I] line of iPTF13bvn and shifted in flux for presentation purposes. The narrow emission lines originate from the underlying H II regions.