Dubbed "The Straw Hat Bandit," investigators believe he has gotten away with at least $100,000 combined, and they are very anxious to catch him before he strikes again.
He is believed to be responsible for the following robberies:
6/8/2012 - Colonial American Bank; 300 Welsh Road - Horsham, Pennsylvania
9/28/2012 - First Federal Bank; 803 Park Avenue - Wrightstown, Pennsylvania
1/18/2013 - Wells Fargo Bank; 706 Stony Hill Road - Yardley, Pennsylvania
3/30/2013 - PNC Bank; 1015 South Bethlehem Pike - Ambler, Pennsylvania
5/24/2013 - Harleysville Savings Bank; 1889 East Ridge Pike - Royersford, Pennsylvania
5/24/2013 - Univest Bank; 4285 Township Line Road - Schwenksville, Pennsylvania
8/30/2013 - Wells Fargo Bank; 25 West Skippack Pike - Ambler, Pennsylvania
1/2/2014 - First Priority Bank; 10 Sentry Parkway - Blue Bell, Pennsylvania
1/6/2015 - Wells Fargo Bank; 481 West Germantown Pike - Plymouth Meeting, Pennsylvania
7/3/2015 - Wells Fargo Bank; 1675 Limekiln Pike - Dresher, Pennsylvania
7/2/2016 - PNC Bank; 1216 Welsh Road - North Wales, Pennsylvania
It's believed that since the robberies occurred in the same general area, it's quite possible he lives somewhere in the northern section of the Delaware Valley.
"Given his clean-cut appearance, we feel our suspect is hiding in plain site. He could live in your neighborhood," said Assistant Special Agent Christian Zajac
According to the FBI, the man has brandished a semi-automatic handgun and verbally demanded money from tellers.
"Fortunately, during the 11 robberies, no shots have been fired. However, we feel it is only a matter of time before somebody gets hurt," said Zajac.
He is believed to have used a 1998-2007 white Chevy Silverado or GMC Sierra base model pickup truck with a cap over the bed.
He may also have had access to a team BMW sedan or a dark-colored Volvo sedan.
The suspect is described as a white man in his 40's or older, standing about six feet tall and weighing more than 200 pounds.
He has concealed his face for all the robberies, the FBI said, using a mask, pillowcase, or bandana. He's also worn a variety of hats, including a large straw hat, dark-colored bucket hat, and black baseball cap with unknown white writing. He favors suit coats over shirt and tie, hooded sweatshirts, and lightweight jackets.
There is a reward from law enforcement for information leading to his capture. A bank reward is also available for information leading to his arrest and conviction.
Anyone with information is asked to call the FBI at 215-418-4000, or visit bankrobbers.fbi.gov.