The couple was married for 26 years, have two children and had no prenuptial agreement.
She rejected the check her ex-husband Harold Hamm sent her Monday, according to his attorneys.
Hamm agreed to pay the nearly $1 billion back in November. He’s somewhat of a legend in the oil business, having built Continental Resources ()from the ground up and led the development of North Dakota’s Bakken oil field.
But Arnall, an economist and a lawyer who held executive positions in the company, has said she is entitled to more. She filed for an appeal, claiming that the fortune was due to both her work and his.
Hamm’s oil business Continental Resources () was worth big bucks during the 26-year marriage because of rising oil prices but now, with oil at about $60 a barrel (it was over $100 at the beginning of the year), the company’s value has taken a hit, along with his wealth, he says. As of earlier this year, Hamm was worth over $20 billion, according to Wealth-X, a wealth tracking company.
Arnall’s attorney did not immediately respond to a request for comment.