MACOM Technology Solutions Holdings, Inc. — Director's Dealing 2025

Sep 9, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MACOM Technology Solutions Holdings, Inc. (MTSI)
CIK: 0001493594
Period of Report: 2025-09-05

Reporting Person: OCAMPO SUSAN (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-09-05	Common Stock	S	17619	$130.82	Disposed	4101002	Indirect
2025-09-05	Common Stock	S	81356	$131.37	Disposed	4019646	Indirect
2025-09-05	Common Stock	S	14300	$132.36	Disposed	4005346	Indirect
2025-09-08	Common Stock	S	3195	$132.06	Disposed	4002151	Indirect
2025-09-09	Common Stock	S	45986	$131.12	Disposed	3956165	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	4415331	Indirect
Common Stock	1500000	Indirect
Common Stock	1623	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $130.50 to $130.99. 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: 1,118,670 of such shares are held by two trusts for the Reporting Person's son; 1,491,166 of such shares are held by two trusts for the Reporting Person's daughter; and 1,491,166 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.

F4: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $131.00 to $131.95. 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.

F5: 1,091,550 of such shares are held by two trusts for the Reporting Person's son; 1,464,048 of such shares are held by two trusts for the Reporting Person's daughter; and 1,464,048 of such shares are held by two trusts for the Reporting Person's son.

F6: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $132.03 to $132.56. 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.

F7: 1,086,785 of such shares are held by two trusts for the Reporting Person's son; 1,459,280 of such shares are held by two trusts for the Reporting Person's daughter; and 1,459,281 of such shares are held by two trusts for the Reporting Person's son.

F8: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $132.00 to $132.21. 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.

F9: 1,085,720 of such shares are held by two trusts for the Reporting Person's son; 1,458,215 of such shares are held by two trusts for the Reporting Person's daughter; and 1,458,216 of such shares are held by two trusts for the Reporting Person's son.

F10: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $131.00 to $131.43. 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.

F11: 1,070,391 of such shares are held by two trusts for the Reporting Person's son; 1,442,887 of such shares are held by two trusts for the Reporting Person's daughter; and 1,442,887 of such shares are held by two trusts for the Reporting Person's son.