He dragged himself out of the warehouse into an alley behind the warehouse and screamed for help, Lorenz said.
Police are trying to determine whether the gunman tried to rob the warehouse before shooting the man.
Burbank resident Jeff Watts, who works in a nearby manufacturing plant as a tool maker, heard three loud noises when he was outside taking a break Monday morning.
The noises sounded “like gunshots, but I don’t know if they were gunshots,” he said.
“I walked through the building and came outside and saw the man down on the ground, but it didn’t look like he was bleeding,” Watts said.
Police responded quickly to the shooting, Watts said.
The man was taken to Los Angeles County-USC Medical Center, Lorenz said. His injuries were not life threatening.
Police searched for the gunman after the shooting but couldn’t find him, he said.
Warehouse manager Mike Balian thought the shooting might have occurred as a result of a robbery attempt, but no money or other valuables were taken or reported missing, he said.
Balian said he will take over operations at the warehouse, which the victim opened seven or eight years ago, while the owner is recovering.
Anyone with details about Monday’s warehouse shooting is asked to call the Glendale Police Department’s Crime Stoppers at (818) 507-7867.
VERONICA ROCHA covers public safety and the courts. She may be reached at (818) 67-3232 or by e-mail at veronica.rocha@ latimes.com.