Portfolio, an imprint of the Penguin Publishing Group, is pleased to announce the launch of a new imprint, joining its eponymous Portfolio and its Sentinel publishing programs.

This new line, Thesis, will be led by Bria Sandford, editorial director of Sentinel, and Niki Papadopoulos, editor-in-chief of Portfolio. Adrian Zackheim will serve as Publisher. Helen Healey will also rejoin the company as Editor to acquire for Thesis, Sentinel, and Portfolio.