144 0001252243 XXXXXXXX LIVE 0001493594 MACOM Technology Solutions Holdings, Inc. 001-35451 100 CHELMSFORD STREET LOWELL MA 01851 (978) 656-2500 OCAMPO SUSAN 10% Stockholder Common The Charles Schwab Corporation

3000 Schwab Way Westlake TX 76262

142819 25329663.00 74471281 11/10/2025 NASDAQ Common 11/21/2023 Founder Shares Issuer N 142819 11/21/2023 N/A N SUSAN OCAMPO

100 CHELMSFORD STREET LOWELL MA 01851

Common 09/05/2025 113275 14885388.00 SUSAN OCAMPO

100 CHELMSFORD STREET LOWELL MA 01851

Common 09/08/2025 3195 421918.00 SUSAN OCAMPO

100 CHELMSFORD STREET LOWELL MA 01851

Common 09/09/2025 45986 6029536.00 SUSAN OCAMPO

100 CHELMSFORD STREET LOWELL MA 01851

Common 09/10/2025 50361 6679719.00 SUSAN OCAMPO

100 CHELMSFORD STREET LOWELL MA 01851

Common 09/11/2025 80891 10716701.00 SUSAN OCAMPO

100 CHELMSFORD STREET LOWELL MA 01851

Common 09/12/2025 89868 11940024.00 SUSAN OCAMPO

100 CHELMSFORD STREET LOWELL MA 01851

Common 09/15/2025 150424 19920486.00 SUSAN OCAMPO

100 CHELMSFORD STREET LOWELL MA 01851

Common 09/17/2025 62435 8305195.00 SUSAN OCAMPO

100 CHELMSFORD STREET LOWELL MA 01851

Common 09/18/2025 150000 19964226.00 Susan O'Campo

100 Chelmsford Street Lowell MA 01851

Common 10/07/2025 62476 8323322.80 Susan O'Campo

100 Chelmsford Street Lowell MA 01851

Common 10/08/2025 150000 19954340.00 Susan O'Campo

100 Chelmsford Street Lowell MA 01851

Common 10/14/2025 53104 7064618.00 SUSAN O'CAMPO

100 CHELMSFORD STREET LOWELL MA 01851

Common 10/15/2025 150000 20402492.65 Susan O'Campo

100 Chelmsford Street Lowell MA 01851

Common 10/16/2025 102261 14323148.44 Susan O'Campo

100 Chelmsford Street Lowell MA 01851

Common 10/20/2025 36762 5183799.97 Susan O'Campo

100 Chelmsford Street Lowell MA 01851

Common 10/23/2025 1862 262543.59 Susan O'Campo

100 Chelmsford Street Lowell MA 01851

Common 10/24/2025 44809 6367473.44 Susan O'Campo

100 Chelmsford Street Lowell MA 01851

Common 10/27/2025 60705 8925065.00 Susan O'Campo

100 Chelmsford Street Lowell MA 01851

Common 10/28/2025 124515 18430716.41 Susan O'Campo

100 Chelmsford Street Lowell MA 01851

Common 10/29/2025 8358 1253808.58 Susan O'Campo

100 Chelmsford Street Lowell MA 01851

Common 11/06/2025 100000 16007495.65 Susan O'Campo

100 Chelmsford Street Lowell MA 01851

Common 11/07/2025 56711 9641220.99 Filing encompasses 1 Trust account in which Susan Ocampo is the TTEE 4 WK average volume Oct 13th Wk 1: 4,949,500 Oct 20th Wk 2: 3,349,500 Oct 27th Wk 3: 5,133,600 Nov 3rd Wk: 4: 7,067,700 Total = 20,500,300 / 4 = 5,125,075 shares per week average 11/10/2025 Susan O'Campo