Stacy Gorham, 53, pleaded not guilty today to charges of inducing panic and possessing criminal tools.
A judge ordered he undergo a psychological evaluation within the next 10 days.
Police arrested Gorham Friday afternoon when he allegedly threatened to bring a gun on OU grounds.
Reports say he was afraid of losing his job after misplacing keys issued to him by the university. Gorham is a utility worker for the school and has been placed on administrative leave.
Officials found eight 8 firearms, including an AK-47, during a search of his Old Coach Road home on Friday.
If found guilty, he could face up to 6 months in jail. His court date is January 7th.