  Let $A$ be a finite dimensional algebra over an algebraically closed field
$k$, $\mathcal {D}^b(A)$ be the bounded derived category of $A$-mod and
$A^{(m)}$ be the $m$-replicated algebra of $A$. In this paper, we investigate
the structure properties of endomorphism algebras arising from silting mutation
in $\mathcal {D}^b(A)$ and tilting mutation in $A^{(m)}$-mod.
