Jennifer Carter Fleiss
40u40 yearbook jennifer fleiss
Current age: 29
40 Under 40 rank: 29


- Last updated October 11 2012 10:56 AM ET
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Fortune's 40 Under 40

Who are 2012's young business stars? We've got the CEO of a blue-chip beer brand, an airline CEO who just placed the largest order in commercial aviation history, and Warren Buffett's new prodigy, among the Silicon Valley hotshots and others.

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