X0306 4 2020-07-01 0000874292 ADDVANTAGE TECHNOLOGIES GROUP INC AEY 0001096802 CHYMIAK KENNETH A 15512 LARSEN STREET OVERLAND PARK KS 66221 true Common Stock 2020-07-01 4 S 0 200000 3.39 D 1275169 I By spouse's revocable trust Common Stock 2020-07-02 4 S 0 31614 3.72 D 1243555 I By spouse's revocable trust Common Stock 2020-07-07 4 S 0 14795 3.4 D 1228760 I By spouse's revocable trust The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.30 to $3.49, inclusive. The reporting person undertakes to provide to AEY, any security holder of AEY, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1), (3) and (4) to this Form 4. The reporting person disclaims beneficial ownership of these shares. These shares were sold in multiple transactions at prices ranging from $3.60 to $3.84, inclusive. These shares were sold in multiple transactions at prices ranging from $3.40 to $3.43, inclusive. /s/ Kenneth A. Chymiak 2020-09-17