Kraft Heinz Co. is preparing to break itself up, people familiar with the matter said. Under the plan, the company could spin off a large part of its grocery business into a new entity, according to the people. This would allow it to focus on faster-growing segments such as sauces, they said.

The company’s shares have underperformed since its megamerger a decade ago and changing consumer tastes have hampered results.

The Wall Street Journal reports the Chicago-based company could spin off a large piece of its grocery business into a new entity worth as much as $20 billion.