X0306 4 2015-05-29 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 2015-05-29 4 S 0 34565 38.3179 D 6215938 D Represents shares sold by the following entities: 21,556 shares of common stock sold by Summit Partners Private Equity Fund VII-A, L.P., 12,947 shares of common stock sold by Summit Partners Private Equity Fund VII-B, L.P.; 58 shares of common stock sold by Summit Investors I, LLC; 4 shares of common stock sold by Summit Investors I (UK), L.P. Represents shares held by the following entities: 3,867,622 in the name of Summit Partners Private Equity Fund VII-A, L.P.; 2,322,956 shares in the name of Summit Partners Private Equity Fund VII-B, L.P.; 10,328 shares in the name of Summit Investors I, LLC; 729 shares in the name of Summit Investors I (UK), L.P.; 14,303 shares and restricted stock units in the name of Peter Y. Chung, which are held for the benefit of Summit Partners, L.P. The entities mentioned in Footnotes 1 and 2 are collectively referred to as the "Summit Entities." Each of the Summit Entities disclaims beneficial ownership of all shares except those specifically listed in the Footnotes 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 Managing Member, by Robin W. Devereux, POA for Joseph F. Trustey, Member 2015-06-02 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 Managing Member, by Robin W. Devereux, POA for Joseph F. Trustey, Member 2015-06-02 Summit Investors I, LLC, by Summit Investors Management, LLC, its Manager, by Summit Master Company, LLC, its Managing Member, by Robin W. Devereux, POA for Joseph F. Trustey, Member 2015-06-02 Summit Investors I (UK), L.P., by Summit Investors Management, LLC, its General Partner, by Summit Master Company, LLC, its Managing Member, by Robin W. Devereux, POA for Joseph F. Trustey, Member 2015-06-02