X0306 4 2020-12-11 0001738177 Cambium Networks Corp CMBM 0001439598 Cumming Stephen C/O CAMBIUM NETWORKS, INC. 3800 GOLF ROAD, SUITE 360 ROLLING MEADOWS IL 60008 true CFO Ordinary Shares 2020-12-11 4 S 0 4000 24.7014 D 39311 D The price reported in Column 4 is a weighted average price. The Shares were purchased in multiple transaction at prices ranging between $24.64 to $24.71. 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/ Sally Rau, attorney-in-fact 2020-12-15