Dell’Osso, who has been with the company since 2008, would replace board chairman Mike Wichterich, who became interim CEO after ousting former chief Doug Lawler in April, the people said.
A Chesapeake spokesperson declined to comment.
Chesapeake, one of the largest natural gas producers in the United States, emerged this year from a Chapter 11 bankruptcy reorganization in which it cut $7 billion in debt. Last month, it agreed to buy Louisiana natural gas rival Vine Energy (VEI.N) for $615 million in cash and stock.
The company has suffered an exodus of executives under Wichterich, including its general counsel, executive vice president of exploration and production, and chief accountant.
Dell’Osso, who is 45, is one of the few long-tenured executives to remain after Lawler’s departure. He previously worked as an investment banker with Jefferies & Co.