X0306 4 2020-08-17 0001738177 Cambium Networks Corp CMBM 0001422227 de Graaf Raymond C/O CAMBIUM NETWORKS, INC. 3800 GOLF ROAD, SUITE 360 ROLLING MEADOWS IL 60008 true Senior VP, Operations Ordinary Shares 2020-08-17 4 S 0 4000 13 D 92416 D Ordinary Shares 2020-08-17 4 S 0 29200 15.3946 D 63216 D Ordinary Shares 2020-08-18 4 S 0 100 15.555 D 63116 D The price reported in Column 4 is a weighted average price. The Shares were purchased in multiple transactions at prices ranging from $15.18 to $15.53. The reporting person undertakes to provide to 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 (1). /s/ Raymond de Graaf 2020-08-19