X0204 3 2012-03-14 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 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 0001385242 Summit Partners Private Equity Fund VII B L P 222 BERKELEY STREET 18TH FLOOR BOSTON MA 02116 0 0 1 0 Class B Convertible Preferred Stock 2010-12-21 Common Stock 33884814 D Warrants 3.51 2010-12-21 Common Stock 5082722 D The Class B Convertible Preferred Stock is convertible into M/A-COM Technology Solutions Holdings, Inc. common stock on the closing date of the initial public offering ("IPO") registered on March 14, 2012 and has no expiration date. The Warrants are convertible into M/A-COM Technology Solutions Holdings, Inc. common stock and have no expiration date. The Convertible Class B Preferred Stock is held as follows: 21,132,108 in the name of Summit Partners Private Equity Fund VII-A, L.P.; 12,692,284 in the name of Summit Partners Private Equity Fund VII-B, L.P.; 56,436 in the name of Summit Investors I, LLC; 3,986 in the name of Summit Investors I (UK), L.P. The Class B Convertible Preferred Stock will be spilt on a one for four basis effective on the closing date of the IPO. The rights to purchase common stock shares are held as follows: 3,169,816 in the name of Summit Partners Private Equity Fund VII-A, L.P.; 1,903,843 in the name of Summit Partners Private Equity Fund VII-B, L.P.; 8,465 in the name of Summit Investors I, LLC; 598 in the name of Summit Investors I (UK), L.P. The rights to purchase common stock shares will be spilt on a one for four basis effective on the closing date of the IPO. The entities mentioned in Footnote 3 and 4 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 2012-03-14 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 2012-03-14 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 2012-03-14 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 2012-03-14