5 of 8
BACKNEXT
5. Alfred Mann
Alfred Mann
Age: 83
Job title: Founder and CEO, MannKind

The biotech entrepreneur still works 80 hours a week, and just pumped $925 million of his own money into MannKind to keep it out of bankruptcy. The billionaire has started companies in everything from aerospace to biomedicine to solar power. His latest venture: an inhalable form of insulin.

NEXT: Sumner Redstone

Last updated October 24 2009: 8:22 AM ET
Email | Print | Share  |  RSS
 
google my aol my msn my yahoo! netvibes
Paste this link into your favorite RSS desktop reader
See all CNNMoney.com RSS FEEDS (close)
40 under 40
Full list: Top 40
Full list: Top 40
Meet these young innovators, value creators, and agents of change. More
20 highest paid
20 highest paid
Which young executives at public companies raked it in - and how much did they earn? More
They're hiring!
They're hiring!
These stars on our list have great jobs to fill. What are they looking for and how can you impress them? More
Contact Us Closed Captioning Manage Cookies+ Site Map

Most stock quote data provided by BATS. Market indices are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer. Morningstar: © 2018 Morningstar, Inc. All Rights Reserved. Factset: FactSet Research Systems Inc. 2018. All rights reserved. Chicago Mercantile Association: Certain market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. Dow Jones: The Dow Jones branded indices are proprietary to and are calculated, distributed and marketed by DJI Opco, a subsidiary of S&P Dow Jones Indices LLC and have been licensed for use to S&P Opco, LLC and CNN. Standard & Poor's and S&P are registered trademarks of Standard & Poor's Financial Services LLC and Dow Jones is a registered trademark of Dow Jones Trademark Holdings LLC. All content of the Dow Jones branded indices © S&P Dow Jones Indices LLC 2018 and/or its affiliates.