Chad Jackson
35
Director, risk management
FedEx Corp.
Jackson leads a team that designs and manages the $39 billion transportation and business services company's property/casualty program. His group managed to significantly lower the cost of FedEx's aviation insurance while adding $1.5 billion of aircraft value. Before joining FedEx, Jackson worked at Marsh. He has a B.S. in education from Baylor and an M.B.A. from Indiana University.

Theodore Kim
36
Head of financial strategy & capital markets
Aetna
Kim led the first healthcare securitization, the $150 million Vitality Re transaction, for the $34.2 billion insurer this year. He was named to his current position in July after serving as assistant treasurer. Before joining Aetna in 2006, Kim worked at Cigna, Arthur D. Little and Arthur Andersen. He has a B.B.A. from Emory and an M.B.A. from MIT Sloan.

Kevin Krenzke
39
VP, finance
McKesson Corp.
When McKesson purchased cancer-care provider US Oncology in 2010, Krenzke was involved in the transaction, and he now leads the integration effort. He had been US Oncology's chief accounting officer and controller and earlier worked in the mergers and acquisitions practice at Deloitte. He has a B.B.A. and a master's in professional accounting from the University of Texas at Austin.

Michael Macek
39
Treasurer & VP, financial planning & analysis
Hill-Rom Holdings
Macek led efforts that improved accounts receivable and operating cash flows for the $1.5 billion provider of hospital beds and other equipment. He also worked on Hill-Rom's 2008 spin-off from Hillenbrand. Earlier, Macek worked at Guidant and Ernst & Young. He has both a B.S. in business, accounting and finance and an M.B.A. from Indiana University.

John McCallion
37
Head, investor relations & VP
MetLife
McCallion coordinates the way the $52.7 billion insurer presents financials and other information to investors. Earlier, as CFO of the investments department, he handled financial analysis and reporting for its $450 billion portfolio. Before joining MetLife, McCallion worked at Pricewaterhouse-Coopers. He has a B.S. in accounting from Syracuse and an M.B.A. from the Wharton School.

Max Myers
37
Treasurer
OGE Energy Corp.
As treasurer for the $3.7 billion utility and natural gas transmission company since 2009, Myers oversees treasury, financial planning and analysis, insurance and corporate development. Earlier, he was OGE's manager of corporate strategic planning and development and worked at Westar Energy. He has a B.S. in business and geology and an M.B.A. from the University of Kansas.

Kevan Parekh
39
VP, finance, professional division
Thomson Reuters
Parekh is part of the team working to reshape the $5.5 billion professional division of the $13 billion financial information company. Earlier, he worked in the treasurer's office at General Motors. He has a B.S. in electrical engineering from the University of Michigan, an M.S. in manufacturing engineering from Wayne State University and an M.B.A. from University of Chicago.

Michael Pearl
39
Corporate controller
Anadarko Petroleum
Pearl has structured and advised on more than $20 billion of transactions for the $30 billion oil and natural gas exploration and production company and served as CFO of Western Gas Partners during Anadarko's IPO of the master limited partnership. Before joining Anadarko, he worked at Ernst & Young. Pearl has both a B.B.A. and an M.S. in accounting from Texas A&M.

Natalie Poteran
39
VP, corporate business planning & analysis
Newell Rubbermaid
Poteran directs the company's planning and forecasting. Earlier, as the executive in charge of accounting and reporting for the beauty & style unit, she worked to improve its margins, streamline product development and reduce inventories. Before joining Newell Rubbermaid in 2002, she worked in finance at W.R. Grace, Otis Elevator, Cigna and Deloitte & Touche. Poteran has a B.S. in accounting from Quinnipiac University.

To read the complete 2011 40 Under 40 list, see Ready to Take Charge.