The crystal structure of the title compound, C(12)H(14)N(2)O(3)S, exhibits intra-molecular C-H⋯S and inter-molecular C-H⋯S, C-H⋯O hydrogen bonds, C-S⋯N [S⋯N = 2.980 (2) Å, C-S⋯N = 145.78 (17)°] and C-H⋯π inter-actions; these inter-actions generate two C(5) chains and S(4), S(6) and R(4) (4)(28) ring motifs. The isoxazole ring has an envelope conformation; the N atom, which is the flap atom, is displaced by 0.261 (2) Å from the plane defined by the remaining four atoms. The dihedral angle between the succinimide and thio-phene rings is 46.8 (2)°.