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

Rhea-AI Filing Summary

MACOM Technology Solutions Holdings (MTSI) Form 4 shows Director Susan Ocampo sold a total of 212,476 shares in two transactions on 10/07/2025 and 10/08/2025 at weighted average prices of approximately $133.22 and $133.03. After the first sale the reporting line shows 3,309,710 shares beneficially owned and after the second sale 3,159,710 shares beneficially owned, with the sales executed in multiple tranches within the disclosed price ranges.

The filing reports substantial indirect holdings through family vehicles: 4,416,954 shares held by Ocampo Family Trusts and 1,500,000 shares held by a GRAT. The report was signed by an attorney-in-fact on 10/09/2025.

Positive

• Maintains substantial indirect ownership through family vehicles: 4,416,954 shares in Ocampo Family Trusts and 1,500,000 shares in a GRAT
• Sales were reported with weighted average prices and the filer offers to provide per‑trade details, supporting disclosure transparency

Negative

• Reported open‑market sales totaling 212,476 shares on 10/07/2025 and 10/08/2025, reducing reported beneficial holdings to 3,159,710 shares
• Multiple transactions across price ranges (from $133.00 to $133.95 on 10/07/2025) may complicate precise per‑trade analysis without issuer or SEC data requests

Insights

Corporate Governance & Insider Trading

TL;DR: Director sold 212,476 shares in two days while retaining large indirect family holdings.

The transactions disclose open-market sales of 62,476 shares on 10/07/2025 and 150,000 shares on 10/08/2025 at weighted average prices of about $133.22 and $133.03. The filing states the shares were sold in multiple trades within disclosed price ranges and offers to provide per‑trade details on request.

The reporting person remains a trustee of multiple family trusts and a GRAT holding 4,416,954 and 1,500,000 shares respectively, which indicates continued significant indirect economic exposure. Monitor quarterly insider patterns and any scheduled trust distributions for potential further changes within the next 12 months.

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

OMB Number:			3235-0287
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hours per response:			0.5

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)
10/07/2025

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	10/07/2025		S		62,476	D	$133.22(1)	3,309,710(2)	I	By trusts for children(3)
Common Stock	10/08/2025		S		150,000	D	$133.03(4)	3,159,710(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 $133.00 to $133.95. 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.

2. 854,906 of such shares are held by two trusts for the Reporting Person's son; 1,227,402 of such shares are held by two trusts for the Reporting Person's daughter; and 1,227,402 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 $133.00 to $133.22. 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. 804,906 of such shares are held by two trusts for the Reporting Person's son; 1,177,402 of such shares are held by two trusts for the Reporting Person's daughter; and 1,177,402 of such shares are held by two trusts for the Reporting Person's son.

	/s/ Ambra R. Roth, Attorney-in-Fact	10/09/2025
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

What did Susan Ocampo report on Form 4 for MTSI?

The Form 4 reports Director Susan Ocampo sold a total of 212,476 shares in two transactions on 10/07/2025 and 10/08/2025 at weighted average prices around $133.22 and $133.03.

How many MTSI shares does Susan Ocampo still beneficially own?

Following the reported transactions the filing shows 3,159,710 shares beneficially owned on the reported line associated with the sales.

Does Susan Ocampo retain additional shares through trusts?

Yes. The filing discloses 4,416,954 shares held by Ocampo Family Trusts and 1,500,000 shares held by a GRAT, reported as indirect holdings.

What prices were the shares sold at?

The sales were reported at weighted average prices with ranges: on 10/07/2025 prices ranged from $133.00 to $133.95 (weighted avg $133.22); on 10/08/2025 prices ranged from $133.00 to $133.22 (weighted avg $133.03).

Who signed the Form 4 for the reporting person?

The Form 4 was signed by an attorney‑in‑fact, Ambra R. Roth, on 10/09/2025.