RXBAR (Chicago Bar Company)
2017
$600M
Why
Kellogg bought the Chicago-based protein bar maker for $600 million in cash in October 2017 to add a fast-growing, simple-ingredient snack brand.
Impact
RXBAR gave Kellogg a foothold in protein and better-for-you bars and stayed with Kellanova after the 2023 spin-off.
Outcome
RXBAR is one of the brands Mars named when it completed the Kellanova acquisition in December 2025.