Billionaire Profile
Harold Hamm & family
Global Rank
#163

Image: Public domain | via Wikimedia Commons

Harold Hamm & family

CEO, Continental Resources
US
Real-Time Net Worth
$16B
As of December 2025
Age
79
Source
Oil & gas
Industry
energy
Citizenship
US

Biography

Harold Hamm, born in 1945, is an American business magnate and oil tycoon, primarily known for founding Continental Resources. With an estimated net worth of $16.0 billion, Hamm has built a career pioneering fracking techniques for shale oil extraction, transforming the energy industry. Starting from humble beginnings as the youngest of thirteen children of cotton sharecroppers, Hamm's career reflects a remarkable journey of entrepreneurial success. His wealth stems from his visionary leadership in the Oil & gas industry, specifically in the development of the Bakken oil field. Hamm has also been involved in politics, serving as an energy advisor and donor to several campaigns.

Wealth Over Time

In-Depth Profile

Early Life

Harold Glenn Hamm was born on December 11, 1945, in Lexington, Oklahoma, as the youngest of 13 children to cotton sharecroppers. Hamm began working at a gas station at age 16 to support his family. He later worked in an oil refinery. After graduating from Enid High School in 1964, Hamm embarked on his career in the oil industry.

Rise to Success

In 1967, Hamm founded Shelly Dean Oil Company, which later became Continental Resources. Hamm is credited with pioneering fracking of shale oil resources. He pioneered the development of the Bakken oil field in North Dakota and Montana using horizontal drilling and hydraulic fracturing. Continental Resources grew into a major oil producer, propelling Hamm to billionaire status.

Key Business Strategies

Hamm's key business strategy involved the innovative use of horizontal drilling and hydraulic fracturing (fracking) to extract oil from shale formations, particularly in the Bakken oil field. This approach significantly increased oil production and reduced the cost of drilling. The company's focus on technological advancements and strategic acquisitions has been critical to its success.

Philanthropy

Harold Hamm has made several multi-million dollar donations to education and diabetes research, including a $10 million donation to the Harold Hamm Diabetes Center at the University of Oklahoma and a $12 million gift to the University of Mary to establish the Hamm School of Engineering.

Career Milestones

1967

Founded Shelly Dean Oil Company

Established what would later become Continental Resources.

1990

Shelly Dean Oil Company Rebranded

The company was renamed Continental Resources.

2004

Completed First Commercially Successful Well in Bakken

Completed the first commercially successful well in the North Dakota Bakken using horizontal drilling and hydraulic fracturing.

2007

Continental Resources Went Public

The company became a public company via an initial public offering.

Philanthropy & Social Impact

Education and Health

Harold Hamm Diabetes Center

$10M

Donation to the University of Oklahoma.

Education

Hamm School of Engineering

$12M

Gift to the University of Mary.

Business Philosophy & Leadership

Notable Quotes

"Every time we can't drill a well in America, terrorism is being funded."