  We report on a first study of 4-jet production in a high energy factorization
(HEF) framework \cite{Kutak:2016mik,Kutak:2016ukc}. We include and discuss
contributions from both single-parton scattering (SPS) and double-parton
scattering (DPS) and compare to the measured data. The DPS HEF result is
considerably smaller than the one obtained with collinear factorization. The
mechanism leading to this difference is of kinematical nature. In contrast to
the collinear approach, the HEF approach nicely describes the distribution of
the $\Delta S$ variable, which involves all four jets and their angular
correlations.
