X0304 4 2012-03-20 0 0001493594 M/A-COM Technology Solutions Holdings, Inc. MTSI 0001486421 Summit Partners Private Equity Fund VII-A, L.P. 222 BERKELEY STREET 18TH FLOOR BOSTON MA 02116 0 0 1 0 0001385242 Summit Partners Private Equity Fund VII B L P 222 BERKELEY STREET 18TH FLOOR BOSTON MA 02116 0 0 1 0 0001435565 Summit Investors I, LLC 222 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116 0 0 1 0 0001494616 Summit Investors I (UK), L.P. 222 BERKELEY STREET, 18TH FLOOR BOSTON MA 02116 0 0 1 0 Common Stock 2012-03-20 4 C 0 8471200 A 8471200 D Class B Convertible Preferred Shares 2012-03-20 4 C 0 33884814 0 D Common Stock 8471200 0 D The Common Stock is held as follows: 5,283,026 shares in the name of Summit Partners Private Equity Fund VII-A, L.P.; 3,173,070 shares in the name of Summit Partners Private Equity Fund VII-B, L.P.; 14,108 shares in the name of Summit Investors I, LLC; 996 shares in the name of Summit Investors I (UK), L.P. The Class B Convertible Preferred Stock is convertible into M/A-COM Technology Solutions Holdings, Inc. common stock on the basis of one share of Common Stock for every four shares of Class B Convertible Preferred Stock and has no expiration date. The Convertible Class B Preferred Stock was held as follows: 21,132,108 shares in the name of Summit Partners Private Equity Fund VII-A, L.P.; 12,692,284 shares in the name of Summit Partners Private Equity Fund VII-B, L.P.; 56,436 shares in the name of Summit Investors I, LLC; 3,986 shares in the name of Summit Investors I (UK), L.P. The entities mentioned in Footnote 1 and 3 are collectively referred to as the "Summit Entities." Each of the Summit Entities disclaims beneficial ownership of the shares except for those listed in the Footnoes as held by such entity, except to the extent of each such entity's pecuniary interest therein. Summit Partners Private Equity Fund VII-A, L.P., by Summit Partners PE VII, L.P., its GP, by Summit Partners PE VII, LLC, its GP, by Summit Partners, L.P., its GP, by Summit Master Company, LLC, its GP, by Robin W. Devereux, POA for Joseph Trustey, Member 2012-03-21 Summit Partners Private Equity Fund VII-B, L.P., by Summit Partners PE VII, L.P., its GP, by Summit Partners PE VII, LLC, its GP, by Summit Partners, L.P., its GP, by Summit Master Company, LLC, its GP, by Robin W. Devereux, POA for Joseph Trustey, Member 2012-03-21 Summit Investors I, LLC, by Summit Investors Management, LLC, its manager, by Summit Partners, L.P., its managing member, by Summit Master Company, LLC, its general partner, by Robin W. Devereux, POA for Joseph F. Trustey, Member 2012-03-21 Summit Investors I (UK), L.P., by Summit Investors Management, LLC, its manager, by Summit Partners, L.P., its managing member, by Summit Master Company, its general Partner, Robin W. Devereux, POA for Joseph F. Trustey, Member 2012-03-21