X0306 4 2021-08-02 0 0000022701 COMMUNICATIONS SYSTEMS INC JCS 0001683065 Fandrich Mark 17400 6TH AVE. N. PLYMOUTH MN 55447 0 1 0 0 Vice President/CFO Common Stock 2021-08-02 4 M 0 20000 5.72 A 49669 D Common Stock 2021-08-02 4 F 0 17845 7.15 D 31824 D Common Stock 2021-08-02 4 M 0 19900 4.44 A 51724 D Common Stock 2021-08-02 4 F 0 15777 7.15 D 35947 D Common Stock 2021-08-02 4 M 0 29150 3.61 A 65097 D Common Stock 2021-08-02 4 F 0 21375 7.15 D 43722 D Common Stock 2021-08-02 4 M 0 12660 2.64 A 56832 D Common Stock 2021-08-02 4 F 0 8358 7.15 D 48024 D Common Stock 2021-08-02 4 M 0 18849 5.39 A 66873 D Common Stock 2021-08-02 4 F 0 16349 7.15 D 50524 D Common Stock 2021-08-02 4 M 0 7729 7.15 A 58253 D Common Stock 2021-08-02 4 F 0 2365 7.15 D 55888 D Common Stock 2021-08-02 4 M 0 8521 7.15 A 64409 D Common Stock 2021-08-02 4 F 0 2607 7.15 D 61802 D Stock Option (Right-to-Buy) 5.72 2021-08-02 4 M 0 20000 0 D 2021-08-01 2023-08-29 Common Stock 20000 0 D Stock Option (Right-to-Buy) 4.4 2021-08-02 4 M 0 19900 0 D 2021-08-01 2024-03-31 Common Stock 19900 0 D Stock Option (Right-to-Buy) 3.61 2021-08-02 4 M 0 29150 0 D 2021-08-01 2025-03-09 Common Stock 29150 0 D Stock Option (Right-to-Buy) 2.64 2021-08-02 4 M 0 12660 0 D 2021-08-01 2026-03-28 Common Stock 12660 0 D Stock Option (Right-to-Buy) 5.39 2021-08-02 4 M 0 18849 0 D 2021-08-01 2027-05-06 Common Stock 18849 0 D Restricted Stock Units 7.15 2021-08-02 4 M 0 7729 0 D 2021-08-01 2026-03-28 Common Stock 7729 0 D Restricted Stock Units 7.15 2021-08-02 4 M 0 8521 0 D 2021-08-01 2027-05-06 Common Stock 8521 0 D Suzette McNally, Attorney-in-Fact for Mark Fandrich 2021-08-04