Carolina signed Thompkins from the practice squad to the active roster Saturday, Mike Kaye of The Charlotte Observer reports.
Thompkins will fill the spot on the Panthers' 53-man roster that was vacated by Miles Sanders, who was placed on injured reserve Saturday due to an ankle injury. Thompkins has played 14 snaps on offense across two regular-season games and rushed for minus-2 yards on one carry in Week 9 against the Saints.