New members include Patric Grismer and David Deno.

Also adds breakfast sandwiches.

Mark Shambura joins company from Papa Johns.

New items will be available on April 4. 

Most recently was managing partner.

Patrick Grismer named lead independent director.
 

Carbone succeeds Meyer.
 

Consumers can use the Panera Grocery Rewards app to collect in-café credit.

Chain offers $5 off to MyPanera members.

Niren Chaudhary makes move to chairman.