Hammann joined Nautilus in July 2003 as President and Chief Executive Officer, and was appointed Chairman in March 2004. By emphasizing financial rigor, innovation and trust, he has transformed the company from one that relied heavily upon a single product in a single channel, to one that offers a diverse range of products across multiple business channels - increasing product availability wherever people shop or exercise. In 2005, the company launched a three-year plan to leverage its four industry-leading brands to become the global leader in health and fitness.

Hammann joined Nautilus from global apparel giant Levi Strauss and Company, where from 2001-2003 he served as chief customer officer and as President of the Americas. While there, he successfully introduced a new $1 billion brand of Levi's to Wal-Mart stores worldwide. He served as a senior officer of Coca-Cola Company from 1996-2000 where he led the North American fountain group to double-digit annual growth, and headed strategy and planning. He served as president of the Canadian division of battery maker Rayovac, where he introduced profitable North American pricing. He developed a business program for shoe marketer Famous Footwear that supported the company's plan to triple its retail presence. He managed the Scope and Crest brands for consumer products giant Procter & Gamble, where both brands achieved significant growth in the marketplace as a result of new, consumer-focused marketing campaigns. He also consulted the telecommunications supplier McLeodUSA.

Hammann received a B.B.A. from the University of Iowa and a M.B.A. from the University of Wisconsin. He was a college football wide receiver for the University of Iowa and grew up on a farm near Bellevue, Iowa. He is an exercise enthusiast and serves as coach in local athletic leagues where his three boys play sports.

Hammann also serves on the board of directors for communications headset maker Plantronics.