  We consider a model of dynamical electroweak symmetry breaking built on the
idea of top-seesaw mechanism. The model features a fourth generation of
vector-like QCD quarks responsible for the origin of the top-seesaw mechanism
and leading to the natural explanation of the large splitting between the top
and bottom quark masses. Motivated by the LHC data on the couplings of the
Higgs boson, we include the entire third generation of Standard Model matter
fields into the model. We determine the low energy effective theory and the
resulting low energy spectrum of states, and constrain the model parameters
with constraints from the precision electroweak data and from the requirement
of a light scalar state with quantum numbers of the Standard Model Higgs boson.
Finally, we perform a global fit of the model parameters to the LHC Higgs data
and show that the model is equally viable as the Standard Model itself, and
predicts new states accessible at the LHC.
