Ferguson has led Calgary-based Cenovus since its launch as an independent public company in late 2009.
Its focus since splitting from Encana has been on conventional and oilsands production in Western Canada, with investments in two U.S. refineries.
Cenovus says it has made progress on selling between $4 billion and $5 billion of assets to help pay for its acquisition of most of the Canadian business of ConocoPhillips.
The company says it hopes to announce divestiture deals by the end of the year, including for its portfolio of conventional oil properties.
Cenovus says it’s also aiming to cut up to $1 billion in costs over the next three years.