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

Rhea-AI Filing Summary

MACOM Technology Solutions Holdings (MTSI): Form 4 filed reporting open-market sales by a reporting person. On 10/28/2025, 124,515 shares of common stock were sold at a weighted average price of $148.02, with individual trades ranging from $148.00 to $148.25. On 10/29/2025, 8,358 shares were sold at a weighted average price of $150.01, with trades from $150.00 to $150.08.

Following these transactions, indirect beneficial holdings were reported as 2,577,334 shares by trusts for children, 4,416,954 shares by Ocampo Family Trusts, and 1,500,000 shares by a GRAT.

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

OMB APPROVAL

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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)
10/28/2025

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	10/28/2025		S		124,515	D	$148.02(1)	2,585,692(2)	I	By trusts for children(3)
Common Stock(5)	10/29/2025		S		8,358	D	$150.01(4)	2,577,334(5)	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 $148.00 to $148.25. 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.

2. 734,944 of such shares are held by two trusts for the Reporting Person's son; 925,374 of such shares are held by two trusts for the Reporting Person's daughter; and 925,374 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 $150.00 to $150.08. 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. 734,944 of such shares are held by a trust for the Reporting Person's son; 921,195 of such shares are held by a trust for the Reporting Person's daughter; and 921,195 of such shares are held by a trust for the Reporting Person's son.

	/s/ Ambra R. Roth, Attorney-in-Fact	10/30/2025
	** 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 insider transaction was reported for MTSI?

Sales of common stock by a reporting person on 10/28/2025 and 10/29/2025.

How many MTSI shares were sold and at what prices?

On 10/28/2025, 124,515 shares at a weighted average of $148.02. On 10/29/2025, 8,358 shares at a weighted average of $150.01.

What were the price ranges for the reported MTSI trades?

On 10/28/2025, trades ranged from $148.00–$148.25. On 10/29/2025, trades ranged from $150.00–$150.08.

What is the reported beneficial ownership after the transactions?

2,577,334 shares by trusts for children, 4,416,954 shares by Ocampo Family Trusts, and 1,500,000 shares by a GRAT.

How is ownership held according to the filing?

All holdings reported are indirect, including by trusts for children, Ocampo Family Trusts, and a GRAT.

Were the reported prices single executions or averages?

They are weighted average prices, with detailed ranges provided for each date.