Justin Cobb was last seen on Friday, August 10th, in South Tulsa.
He was driving a red work van with a “Mullin Service” logo.
The 34-year-old worked for MarkWayne Mullin’s heat and air conditioning company.
Less than a week later, Cobb’s van was discovered in rural Okmulgee County.
Investigators say his cash and credit cards were found at the wooded site.
That's one of the reasons Cobb’s family doesn’t believe he took off somewhere.
Broken Arrow police tell KRMG the tip hotline stopped ringing about a week ago.
They are hoping the new reward money will bring new leads.
The donor doesn't want their name released.
Cops are asking hunters to keep an eye out for clues.
Cobb is 6’4 tall and weighs 208 pounds.
If you have information about Cobb, please contact the Broken Arrow Police Department at 918-259-8400 or Detective Pat O’Brien at 451-8200 ext. 8709.