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

May 14, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MACOM Technology Solutions Holdings, Inc. (MTSI)
CIK: 0001493594
Period of Report: 2025-05-12

Reporting Person: OCAMPO SUSAN (Director, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-05-12	Common Stock	S	5986	$120.88	Disposed	4671778	Indirect
2025-05-12	Common Stock	S	27157	$121.48	Disposed	4644621	Indirect
2025-05-12	Common Stock	S	77308	$122.67	Disposed	4567313	Indirect
2025-05-12	Common Stock	S	32170	$123.52	Disposed	4535143	Indirect
2025-05-12	Common Stock	S	128256	$124.35	Disposed	4406887	Indirect
2025-05-12	Common Stock	S	29123	$125.19	Disposed	4377764	Indirect
2025-05-13	Common Stock	S	104827	$123.72	Disposed	4272937	Indirect
2025-05-13	Common Stock	S	45073	$124.20	Disposed	4227864	Indirect
2025-05-13	Common Stock	S	100	$125.01	Disposed	4227764	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	4815331	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 $120.68 to $120.99. 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: 1,308,928 of such shares are held by two trusts for the Reporting Person's son; 1,681,425 of such shares are held by two trusts for the Reporting Person's daughter; and 1,681,425 of such shares are held by two trusts for the Reporting Person's son.

F3: The Reporting Person is a trustee of the Ocampo Family Trust, 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 $121.00 to $121.98. 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.

F5: 1,299,875 of such shares are held by two trusts for the Reporting Person's son; 1,672,373 of such shares are held by two trusts for the Reporting Person's daughter; and 1,672,373 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 $122.00 to $122.995. 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: 1,274,105 of such shares are held by two trusts for the Reporting Person's son; 1,646,604 of such shares are held by two trusts for the Reporting Person's daughter; and 1,646,604 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 $123.00 to $123.995. 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: 1,263,381 of such shares are held by two trusts for the Reporting Person's son; 1,635,881 of such shares are held by two trusts for the Reporting Person's daughter; and 1,635,881 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 $124.00 to $124.97. 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: 1,220,629 of such shares are held by two trusts for the Reporting Person's son; 1,593,129 of such shares are held by two trusts for the Reporting Person's daughter; and 1,593,129 of such shares are held by two trusts for the Reporting Person's son.

F12: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $125.00 to $125.50. 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.

F13: 1,210,924 of such shares are held by two trusts for the Reporting Person's son; 1,583,420 of such shares are held by two trusts for the Reporting Person's daughter; and 1,583,420 of such shares are held by two trusts for the Reporting Person's son.

F14: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $123.50 to $123.995. 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.

F15: 1,175,981 of such shares are held by two trusts for the Reporting Person's son; 1,548,478 of such shares are held by two trusts for the Reporting Person's daughter; and 1,548,478 of such shares are held by two trusts for the Reporting Person's son.

F16: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $124.00 to $124.98. 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.

F17: 1,160,956 of such shares are held by two trusts for the Reporting Person's son; 1,533,454 of such shares are held by two trusts for the Reporting Person's daughter; and 1,533,454 of such shares are held by two trusts for the Reporting Person's son.

F18: 1,160,924 of such shares are held by two trusts for the Reporting Person's son; 1,533,420 of such shares are held by two trusts for the Reporting Person's daughter; and 1,533,420 of such shares are held by two trusts for the Reporting Person's son.