  A new superconformal mechanics with OSp(4|2) symmetry is obtained by gauging
the U(1) isometry of a superfield model. It is the one-particle case of the new
N=4 super Calogero model recently proposed in arXiv:0812.4276 [hep-th].
Classical and quantum generators of the osp(4|2) superalgebra are constructed
on physical states. As opposed to other realizations of N=4 superconformal
algebras, all supertranslation generators are linear in the odd variables,
similarly to the N=2 case. The bosonic sector of the component action is
standard one-particle (dilatonic) conformal mechanics accompanied by an
SU(2)/U(1) Wess-Zumino term, which gives rise to a fuzzy sphere upon
quantization. The strength of the conformal potential is quantized.
