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

Sep 18, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MACOM Technology Solutions Holdings, Inc. (MTSI)
CIK: 0001493594
Period of Report: 2025-09-15

Reporting Person: OCAMPO SUSAN (10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-09-15	Common Stock	S	107361	$132.16	Disposed	3627684	Indirect
2025-09-15	Common Stock	S	43063	$133.11	Disposed	3584621	Indirect
2025-09-17	Common Stock	S	62435	$133.02	Disposed	3522186	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 $132.00 to $132.98. 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: 960,898 of such shares are held by two trusts for the Reporting Person's son; 1,333,393 of such shares are held by two trusts for the Reporting Person's daughter; and 1,333,393 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 $133.00 to $133.63. 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: 946,544 of such shares are held by two trusts for the Reporting Person's son; 1,319,038 of such shares are held by two trusts for the Reporting Person's daughter; and 1,319,039 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 $133.00 to $133.32. 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: 925,732 of such shares are held by two trusts for the Reporting Person's son; 1,298,227 of such shares are held by two trusts for the Reporting Person's daughter; and 1,298,227 of such shares are held by two trusts for the Reporting Person's son.