What is the insider’s post-transaction share ownership in MTSI?

After the reported transactions, the insider directly owned 29,384 shares.

MACOM insider Form 4: PRSU vesting and tax withholdings detailed

Q: How many PRSUs vested for MTSI's insider?

A total of 20,988 PRSUs vested and settled into common stock on Nov 6, 2025 .

Q: How many shares were withheld for taxes and at what prices?

The issuer withheld 8,962 shares at $166.92 on Nov 6, 2025 and 454 shares at $170.03 on Nov 8, 2025.

Q: What is the insider’s role at MTSI?

The reporting person is an officer: SVP, Advanced Semiconductor .

Q: What security type was involved?

Common stock resulting from the vesting and settlement of performance-based restricted stock units (PRSUs) .

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

MACOM Technology Solutions (MTSI) officer (SVP, Advanced Semiconductor) filed a Form 4. On Nov 6, 2025, 20,988 PRSUs vested and settled into common stock at $0. To cover taxes, the issuer withheld 8,962 shares at $166.92 on Nov 6 and 454 shares at $170.03 on Nov 8, 2025. After these transactions, the insider directly owned 29,384 shares.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider Struble Wayne Mack

Role SVP, Advanced Semiconductor

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	454	$170.03	$77K
Grant/Award	Common Stock	20,988	$0.00	--
Tax Withholding	Common Stock	8,962	$166.92	$1.50M

Holdings After Transaction: Common Stock — 29,384 shares (Direct)

Footnotes (1)

Represents performance-based restricted stock units ("PRSUs") previously granted to the Reporting Person under an equity compensation plan maintained by the Issuer, which vested and settled in shares of Common Stock on November 6, 2025. Shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settling of PRSUs on November 6, 2025. Shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of restricted stock units on November 8, 2025.

Form 4 Insider Transactions: What Each Field Means →

11/10/2025 - 04:51 PM

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
Estimated average burden
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^*

Struble Wayne Mack

(Last)

(First)

(Middle)

C/O MACOM TECHNOLOGY SOLUTIONS HOLDINGS

100 CHELMSFORD STREET

(Street)

LOWELL

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	10% Owner
X	Officer (give title below)	Other (specify below)
	SVP, Advanced Semiconductor

3. Date of Earliest Transaction (Month/Day/Year)
11/06/2025

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	11/06/2025		A		20,988⁽¹⁾	A	$0	38,800	D
Common Stock	11/06/2025		F		8,962⁽²⁾	D	$166.92	29,838	D
Common Stock	11/08/2025		F		454⁽³⁾	D	$170.03	29,384	D

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Represents performance-based restricted stock units ("PRSUs") previously granted to the Reporting Person under an equity compensation plan maintained by the Issuer, which vested and settled in shares of Common Stock on November 6, 2025.

2. Shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting and settling of PRSUs on November 6, 2025.

3. Shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of restricted stock units on November 8, 2025.

	/s/ Ambra R. Roth, Attorney-in-Fact	11/10/2025
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Source: View Original Filing on SEC EDGAR

FAQ

What did MTSI's insider report on Form 4?

The SVP, Advanced Semiconductor reported the vesting and settlement of 20,988 PRSUs into common stock on Nov 6, 2025, with share withholdings for taxes.

How many PRSUs vested for MTSI's insider?

A total of 20,988 PRSUs vested and settled into common stock on Nov 6, 2025.

How many shares were withheld for taxes and at what prices?

The issuer withheld 8,962 shares at $166.92 on Nov 6, 2025 and 454 shares at $170.03 on Nov 8, 2025.

What is the insider’s role at MTSI?

The reporting person is an officer: SVP, Advanced Semiconductor.

What security type was involved?

Common stock resulting from the vesting and settlement of performance-based restricted stock units (PRSUs).