This one is available for all US residents EXCEPT California. They already did a class action just for CA.

Due to a recent Kashi Class Action Settlement you can receive up to $27.50 with no proof of purchase required. If you have receipts you can get a full refund on all of your purchases.

If you purchased Kashi products from May 3, 2008, and September 4, 2015 you qualify.
Submit this Claim Form online by January 19, 2016.