14-3-3 ζ is an androgen receptor (AR) co-activator. To further understand how 14-3-3 ζ may be modulating AR activity, we performed rapid immunoprecipitation mass spectrometry of endogenous proteins for analysis of chromatin complexes (RIME) on AR and 14-3-3 ζ in LNCaP prostate cancer cells in the presence of PIM1. This enabled us to observe what other proteins associate with both 14-3-3 ζ and AR on chromatin. Notably, several of the proteins we identified as associated with both AR and 14-3-3 ζ are known AR co-regulators. We hypothesized that to co-regulate AR, 14-3-3 ζ may be recruiting or altering interactions between AR and AR co-regulators.