X0508 4 2023-11-08 0 0001493594 MACOM Technology Solutions Holdings, Inc. MTSI 0001330184 Daly Stephen G C/O MACOM TECHNOLOGY SOLUTIONS HOLDINGS 100 CHELMSFORD STREET LOWELL MA 01851 0 1 0 0 President and CEO 0 Common Stock 2023-11-08 4 A 0 12832 0 A 176700 D Common Stock 2023-11-09 4 A 0 34852 0 A 211552 D Common Stock 2023-11-09 4 F 0 15457 72.41 D 196095 D Represents restricted stock units ("RSUs") granted to the Reporting Person under the Issuer's 2021 Omnibus Incentive Plan. Each RSU represents the contingent right to receive one share of Common Stock. The RSUs vest in three equal annual installments on November 8, 2024, November 8, 2025 and November 8, 2026, provided that the Reporting Person remains in continuous service with the Issuer through each such vesting date. Represents performance-based restricted stock units ("PRSUs") previously granted to the Reporting Person under an equity compensation plan maintained by the Issuer, which vested and settled in shares of Common Stock on November 9, 2023. Shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settling of PRSUs on November 9, 2023. /s/ Ambra R. Roth, Attorney-in-Fact 2023-11-13