| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| OCAMPO SUSAN | 10%+ Owner | C/O MACOM TECHNOLOGY SOLUTIONS HOLDINGS, 100 CHELMSFORD STREET, LOWELL | /s/ Ambra R. Roth, Attorney-in-Fact | 22 Sep 2025 | 0001252243 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MTSI | Common Stock | Sale | $19,963,500 | -150,000 | -4.3% | $133.09 | 3,372,186 | 18 Sep 2025 | By trusts for children | F1, F2, F3 |
| transaction | MTSI | Common Stock | Gift | $0 | -1,623 | -100% | $0.000000 | 0 | 18 Sep 2025 | Direct | |
| transaction | MTSI | Common Stock | Gift | $0 | +1,623 | +0.04% | $0.000000 | 4,416,954 | 18 Sep 2025 | By Ocampo Family Trusts | F3 |
| holding | MTSI | Common Stock | 1,500,000 | 18 Sep 2025 | By GRAT | F3 |
| Id | Content |
|---|---|
| F1 | The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $133.00 to $133.88. The Reporting Person undertakes to provide to the Issuer, any shareholder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. |
| F2 | 875,732 of such shares are held by two trusts for the Reporting Person's son; 1,248,227 of such shares are held by two trusts for the Reporting Person's daughter; and 1,248,227 of such shares are held by two trusts for the Reporting Person's son. |
| F3 | The Reporting Person is a trustee of two Ocampo Family Trusts, the GRAT and each of the following six trusts for the benefit of her children: (i) two trusts for her son; (ii) two trusts for her daughter; and (iii) two trusts for her son. |