Possible Clues:

• Whole-grain cereal brand
• Maker of GoLean cereals
• Maker of GOLEAN cereals
• 'Seven whole grains on a mission' brand
• "Seven Whole Grains on a Mission" cereal
• Breakfast cereal maker
• GOLEAN cereal maker
• Kellogg's subsidiary
• Brand with the slogan 'Go Far with GOLEAN'
• Kellogg's whole-grain subsidiary