X0306 4 2018-06-21 0 0000740664 R F INDUSTRIES LTD RFIL 0001710872 Dawson Robert D 7610 MIRAMAR RD., BLDG. 6000 SAN DIEGO CA 92126 0 1 0 0 President and CEO Common Stock 2018-06-21 4 P 0 5000 6.9996 A 15000 D The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $6.995 to $7.00, inclusive. The reporting person undertakes to provide to RF Industries Ltd, any security holder of RF Industries Ltd, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in footnote (1) to this Form 4. /s/ Tony D. Shin, Attorney in Fact 2018-06-21