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

3000 Schwab Way Westlake TX 76262

200000 49044230 75011970 04/08/2026 NASDAQ Common 11/21/2023 Founder Shares Issuer N 200000 11/21/2023 N/A N Susan Ocampo

Box #88439 Honolulu HI 96830

Common 02/03/2026 100000 23029116 Susan Ocampo

Box #88439 Honolulu HI 96830

Common 02/06/2026 100000 23584697 Susan Ocampo

Box #88439 Honolulu HI 96830

Common 02/12/2026 57827 13897141 Susan Ocampo

Box #88439 Honolulu HI 96830

Common 02/13/2026 42173 10136319 Susan Ocampo

Box #88439 Honolulu HI 96830

Common 02/13/2026 19877 4870489 Susan Ocampo

Box #88439 Honolulu HI 96830

Common 02/17/2026 80123 19655435 Susan Ocampo

Box #88439 Honolulu HI 96830

Common 02/18/2026 3156 789003 Susan Ocampo

Box #88439 Honolulu HI 96830

Common 02/24/2026 53509 13381379 Susan Ocampo

Box #88439 Honolulu HI 96830

Common 02/25/2026 261763 66600315 Susan Ocampo

Box #88439 Honolulu HI 96830

Common 03/02/2026 200000 50539095 Susan Ocampo

Box #88439 Honolulu HI 96830

Common 03/25/2026 100000 24505253.65 Filing encompasses 1 Trust account in which Susan Ocampo is the TTEE. 4 WK average volume March 9th Wk 1: 6,501,577 March 16th Wk 2: 5,866,577 March 23rd Wk 3: 5,997,300 March 30th Wk 4: 5,604,900 Total = 23,970,354 / 4 = 5,992,588.5 shares per week average 04/08/2026 /s/ Susan Ocampo