EQT Corp. said in a regulatory filing late Tuesday it expects to report steep losses on derivatives for the third quarter as U.S. natural gas prices have hit their highest levels in more than a decade. 

In a Form 8-K filed with the U.S. Securities and Exchange Commission, EQT forecast a $1.6 billion loss on derivatives for 3Q2022 and a $5.5 billion loss through the first nine months of the year. EQT, the country’s largest natural gas producer, also said it expects to report more than $2 billion in cash payments to settle derivatives during the third quarter, bringing the total to about $4.7 billion through the first nine months of 2022. 

The company has not scheduled its third quarter earnings report, and the final numbers could change. EQT reported a net loss of $1.2 billion...