X0508 4 2023-09-29 0000740664 R F INDUSTRIES LTD RFIL 0001095155 Holdsworth Mark Keith 7610 MIRAMAR ROAD, BLDG 6000 SAN DIEGO CA 92126 1 0 Common Stock 2023-09-29 4 P 0 8000 3.01 A 708117 I By THG Securities Fund, L.P. Common Stock 2023-10-02 4 P 0 454 2.9305 A 708571 I By THG Securities Fund, L.P. Common Stock 2023-10-03 4 P 0 1517 2.8261 A 710088 I By THG Securities Fund, L.P. Common Stock 31777 D Common Stock 60218 I By The Holdsworth Family Living Trust The price reported in Column 4 is a weighted average price. The shares were purchased in multiple transactions with prices ranging from $2.925 to $2.94 for a weighted average purchase price of $2.9305. The reporting person undertakes to provide the issuer, any security holder of the issuer 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 this footnote. The price reported in Column 4 is a weighted average price. The shares were purchased in multiple transactions with prices ranging from $2.8025 to $2.85 for a weighted average purchase price of $2.8261. The reporting person undertakes to provide the issuer, any security holder of the issuer 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 this footnote. /s/ Mark Holdsworth 2023-10-03