Some Sprouts Market Corner breads bear an unauthorized Scroll K certification and are NOT certified.
Packages with the information and the Scroll K symbol printed directly on the packaging ARE kosher certified.
Packages that have a label affixed to the packaging with information and the Scroll K symbol on the affixed label are mislabeled and are NOT kosher certified.
See below for pictures of both types and a full listing of products that are certified and a full listing of those that are NOT certified despite the erroneous Scroll K symbol.
Corrective measures have been taken. 

(above) Label affixed on package IS NOT kosher certified

(above) Bag printed with certification IS kosher-certified

Certified when bearing the Scroll K:
Sprouts Market Corner Challah
Sprouts Market Corner 8 slice San Francisco Style Sourdough
Sprouts Market Corner 8 slice Italian Country
Sprouts Market Corner 8 slice Chia Cracked Rye
Sprouts Market Corner 8 slice Honey Spelt
Sprouts Market Corner 8 slice Lucky 7 Multigrain
Sprouts Market Corner SF Style Sourdough Rolls 8 Pack

 Not Certified Items:

Sprouts Market Corner SF Style Sourdough 14 oz.
Sprouts Market Corner Seedsational 14 oz.
Sprouts Market Corner Cranberry Raisin Walnut 14 oz.
Sprouts Market Corner Kalamata Green Olive 14 oz.
Sprouts Market Corner Ciabatta 14 oz.
Sprouts Market Corner Rosemary 14 oz.
Sprouts Market Corner Sesame Semolina 14 oz.
Sprouts Market Corner Baby Boule 10 oz.