X0306 4 2018-03-15 0 0000943034 IMAGE SENSING SYSTEMS INC isns 0001656039 Berger Andrew 1600 UNIVERSITY AVE. W. #500 ST. PAUL MN 55104 1 0 0 0 Common Stock 2018-03-15 4 A 0 2049 0 A 96961 D Common Stock 828393 I See Footnote Represents 436,677 Shares of Common Stock owned directly by AB Value, LP, 391,716 Shares of Common Stock AB Value Management LLC had caused its Managed Account to directly own. This Form 4 is filed jointly by AB Value Management LLC's Managed Account, AB Value Partners, LP, and Andrew Berger ("Mr. Berger"). By virtue of their relationships with AB Value Partners, LP, each of AB Value Management LLC and Mr. Berger may be deemed to beneficially own the Shares owned by AB Value Partners, LP and the Managed Account. /s/Todd C. Slawson, Attorney-in-fact for Andrew T. Berger 2018-03-15