X0306 4 2020-12-23 0001738177 Cambium Networks Corp CMBM 0001659054 VECTOR CAPITAL, L.L.C. C/O VECTOR CAPITAL MANAGEMENT, L.P. ONE MARKET ST, STEUART TOWER, 23RD FLOOR SAN FRANCISCO CA 94105 true true 0001780681 Vector Cambium Holdings (Cayman), L.P. C/O VECTOR CAPITAL MANAGEMENT, L.P., ONE MARKET STREET STEUART TOWER, 23RD FL SAN FRANCISCO CA 94105 true true 0001403846 Vector Capital IV, L.P. C/O VECTOR CAPITAL CORPORATION ONE MARKET ST., STEUART TOWER, 23RD FL SAN FRANCISCO CA 94105 true true 0001369704 VECTOR ENTREPRENEUR FUND III L P 456 MONTGOMERY ST 19TH FL SAN FRANCISCO CA 94104 true true 0001659052 VECTOR CAPITAL PARTNERS IV, L.P. C/O VECTOR CAPITAL MANAGEMENT, L.P., ONE MARKET ST., STEUART TOWER, 23RD FL SAN FRANCISCO CA 94105 true true 0001659053 VECTOR CAPITAL PARTNERS III, L.P. C/O VECTOR CAPITAL MANAGEMENT, L.P., ONE MARKET ST., STEUART TOWER, 23RD FL SAN FRANCISCO CA 94105 true true 0001780631 Vector Capital, Ltd. C/O VECTOR CAPITAL MANAGEMENT, L.P., ONE MARKET ST., STEUART TOWER, 23RD FL SAN FRANCISCO CA 94105 true true Ordinary Shares 2020-12-23 5 G 0 160000 0 D 14939754 I See footnotes Ordinary Shares 2020-12-23 5 G 0 30000 0 D 14909754 I See footnotes Ordinary Shares 2020-12-23 5 G 0 5000 0 D 14904754 I See footnotes Ordinary Shares 1587000 I See footnotes Ordinary Shares 18000 I See footnotes These Ordinary Shares are held directly by Vector Cambium Holdings (Cayman), L.P. ("VCH"). These shares are directly owned by Vector Capital IV, L.P. ("VC IV"). These shares are directly owned by Vector Entrepreneur Fund III, LP ("VEF III"). Vector Capital Partners IV, L.P. ("VCP IV") is the general partner of VCH and VC IV. Vector Capital Partners III, L.P. ("VCP III") is the general partner of VEF III. Vector Capital, Ltd. and Vector Capital, L.L.C. are the general partners of each of VCP IV and VCP III. The board of directors of Vector Capital, Ltd. has the exclusive power and authority to vote, or to direct to vote, and to dispose, or to direct the disposition of, the shares held by each of VCH, VC IV and VEF III and therefore holds indirect voting and dispositive power over the shares held by each of VCH, VC IV and VEF III and may be deemed to be the beneficial owner of such shares. Excludes 105,000 shares previously directly held by VCH which were transferred to VC IV on December 23, 2020. Includes 105,000 shares previously directly held by VCH which were transferred to VC IV on December 23, 2020. Each of Alexander R. Slusky, the Chief Investment Officer of Vector Capital Management, L.P., and Robert Amen, a Managing Director of Vector Capital Management, L.P., serves on the Issuer's board of directors ("Board") as a representative of Vector Capital. By virtue of their representation on the Board, for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, the Reporting Persons are deemed to be directors of the Issuer by deputization. /s/ Vector Cambium Holdings (Cayman) L.P., by Vector Capital Partners IV, L.P., by Vector Capital, Ltd., by David Baylor, Director 2020-12-28 /s/ Vector Capital IV, L.P., by Vector Capital Partners IV, L.P., by Vector Capital, Ltd., by David Baylor, Director 2020-12-28 /s/ Vector Entrepreneur Fund III, LP, by Vector Capital Partners III, L.P., by Vector Capital, Ltd., by David Baylor, Director 2020-12-28 /s/ Vector Capital Partners IV, L.P., by Vector Capital, Ltd., by David Baylor, Director 2020-12-28 /s/ Vector Capital Partners III, L.P., by Vector Capital, Ltd., by David Baylor, Director 2020-12-28 /s/ Vector Capital, Ltd., by David Baylor, Director 2020-12-28 /s/ Vector Capital, L.L.C., by David Baylor, Chief Operating Officer 2020-12-28