"Straight up, we made some mistakes," said Robb. "We want to own that and tell you what we're doing about it."
Robb insisted that the errors were "unintentional because the mistakes are both in the customers' favor, and sometimes not in the customers' favor."
The errors were unveiled in a probe by the New York City Department of Consumer Affairs, triggered by an investigation from the New York Daily News. Company officials now promise to increase training in their stores nationwide "because we want to be perfect in this area. We don't want there to ever be any mistakes."
Robb came to Boise in November 2012 when Whole Foods opened its first-ever Idaho store.
Whole Foods stock was trading at $39.41 on the New York Stock Exchange at midday, up slightly from its low of $39.22 on July 1.