[Form 4] MACOM Technology Solutions Holdings, Inc. Insider Trading Activity

Rhea-AI Filing Summary

MACOM Technology Solutions (MTSI) reported insider transactions by a director. The filing lists three open‑market sales of common stock executed through children’s trusts: 53,104 shares on 10/14/2025 at a weighted average price of $133.03, 150,000 shares on 10/15/2025 at $136.02, and 102,261 shares on 10/16/2025 at $140.06.

Following these transactions, the filing shows 2,854,345 shares beneficially owned indirectly by trusts for children. It also lists additional indirect beneficial ownership positions: 4,416,954 shares by Ocampo Family Trusts and 1,500,000 shares by a GRAT. Prices are reported as weighted averages, with underlying trade ranges provided in the footnotes.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

OCAMPO SUSAN

(Last) (First) (Middle)

C/O MACOM TECHNOLOGY SOLUTIONS HOLDINGS

100 CHELMSFORD STREET

(Street)

LOWELL MA 01851

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MACOM Technology Solutions Holdings, Inc. [ MTSI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
10/14/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/14/2025		S		53,104	D	$133.03(1)	3,106,606(2)	I	By trusts for children(3)
Common Stock	10/15/2025		S		150,000	D	$136.02(4)	2,956,606(5)	I	By trusts for children(3)
Common Stock	10/16/2025		S		102,261	D	$140.06(6)	2,854,345(7)	I	By trusts for children(3)
Common Stock								4,416,954	I	By Ocampo Family Trusts(3)
Common Stock								1,500,000	I	By GRAT(3)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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 $133.16. 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.

2. 787,205 of such shares are held by two trusts for the Reporting Person's son; 1,159,700 of such shares are held by two trusts for the Reporting Person's daughter; and 1,159,701 of such shares are held by two trusts for the Reporting Person's son.

3. 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.

4. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $136.00 to $136.25. 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.

5. 737,205 of such shares are held by two trusts for the Reporting Person's son; 1,109,700 of such shares are held by two trusts for the Reporting Person's daughter; and 1,109,701 of such shares are held by two trusts for the Reporting Person's son

6. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $140.00 to $140.41. 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.

7. 734,944 of such shares are held by two trusts for the Reporting Person's son; 1,059,700 of such shares are held by two trusts for the Reporting Person's daughter; and 1,059,701 of such shares are held by two trusts for the Reporting Person's son.

	/s/ Ambra R. Roth, Attorney-in-Fact	10/16/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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FAQ

What did MTSI’s Form 4 report?

Three open‑market sales of 53,104 shares at $133.03, 150,000 shares at $136.02, and 102,261 shares at $140.06.

On what dates were the MTSI insider sales made?

Transactions occurred on 10/14/2025, 10/15/2025, and 10/16/2025.

How many shares were beneficially owned after the reported transactions?

The filing shows 2,854,345 shares beneficially owned indirectly by trusts for children after the transactions.

What ownership form was used for the reported MTSI transactions?

Indirect ownership, listed as By trusts for children.

Were the reported prices exact trade prices or averages?

They are weighted average prices; footnotes provide price ranges for each date.

Does the filing list other indirect holdings for the reporting person?

Yes. It lists 4,416,954 shares by Ocampo Family Trusts and 1,500,000 shares by a GRAT.

What is the reporting person’s relationship to MTSI?

The filing identifies the reporting person as a Director.