  We investigate supersymmetric models with left-right symmetry based on the
group $SU(4)_{c} \times SU(2)_{L} \times SU(2)_{R}$ ($4$-$2$-$2$) with negative
sign of bilinear Higgs potential parameter $\mu$ in the context of the latest
experimental results. In the backdrop of experimental results from the Large
Hadron Collider, we investigate the possibility of Yukawa unification in
$4$-$2$-$2$ and find out the same is still not ruled out. Furthermore, this
scenario also provides a satisfactory dark matter candidate. The current
experimental bounds on sparticle masses, mass bounds on Higgs particle, updated
phenomenological constraints from the rare decays of B meson and the anomalous
magnetic moment of muon with the requirement of a Yukawa unified theory having
$10 \%$ or better third family Yukawa unification are utilized to bound the
parametric space of these models.
