MACOM COO Dennehy receives 33,640 shares on vesting

The reported activity includes a performance-based award settlement and separate share withholding tied to tax obligations.

Available on EDGAR 11/09/2026 - 08:31 PM EST Accepted by SEC EDGAR 11/09/2026 - 08:31 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

MACOM Technology Solutions Holdings, Inc. (MTSI) reported that Senior VP and COO Robert Dennehy’s 33,640 performance-based restricted stock units vested and settled in common shares on November 5, 2026. The issuer withheld 14,707 shares for his tax obligations in connection with that vesting. A separate transaction dated November 6, 2026, involved 472 shares withheld for tax obligations tied to restricted stock units vesting on November 8, 2026. No Rule 10b5-1 plan is reported.

Insider Trade Summary

3 transactions reported

Mixed 3 txns

Insider Dennehy Robert

Role Senior VP and COO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F3	472	$210.98	$100K
Grant/Award	Common Stock F1	33,640	$0.00	$0.00
Tax Withholding	Common Stock F2	14,707	$190.35	$2.80M

Holdings After Transaction: Common Stock — 32,822 shares (Direct)

Footnotes (3)

1. F1. 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 5, 2026.
2. F2. 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 5, 2026.
3. F3. 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, 2026.

Key Figures

Performance-based restricted stock units settled: 33,640 shares Shares withheld for tax obligations: 14,707 shares Shares withheld for tax obligations: 472 shares

3 metrics

Performance-based restricted stock units settled 33,640 shares Vested and settled November 5, 2026

Shares withheld for tax obligations 14,707 shares In connection with performance-based restricted stock unit vesting on November 5, 2026

Shares withheld for tax obligations 472 shares Transaction dated November 6, 2026; tied to restricted stock units vesting on November 8, 2026

Key Terms

performance-based restricted stock units, vested and settled, tax withholding obligations

3 terms

performance-based restricted stock units financial

"Represents performance-based restricted stock units"

Performance-based restricted stock units are a type of employee equity award that converts into company shares only if predefined financial or operational targets are met over a set period. Think of it like a bonus check that becomes stock only when specific goals are hit; it ties pay to results, aligning managers’ incentives with shareholders. Investors care because these awards affect future share count, executive incentives, and signal how management’s success will be measured and rewarded.

vested and settled financial

"which vested and settled in shares of Common Stock"

tax withholding obligations financial

"to satisfy the Reporting Person's tax withholding obligations"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many shares did MTSI Senior VP and COO Robert Dennehy receive and have withheld?

Robert Dennehy had 33,640 shares settle from performance-based restricted stock units that vested on November 5, 2026. The issuer withheld 14,707 shares for tax obligations related to that vesting. A separate transaction dated November 6, 2026, reported 472 shares withheld for tax obligations tied to restricted stock units vesting on November 8, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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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^*

Dennehy Robert

(Last) (First) (Middle)

C/O MACOM TECHNOLOGY SOLUTIONS HOLDINGS

100 CHELMSFORD STREET

(Street)

LOWELL MASSACHUSETTS 01851

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	Senior VP and COO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/05/2026

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

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

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

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	11/05/2026		A		33,640(1)	A	$0	48,001	D
Common Stock	11/05/2026		F		14,707(2)	D	$190.35	33,294	D
Common Stock	11/06/2026		F		472(3)	D	$210.98	32,822	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

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 5, 2026.

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 5, 2026.

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, 2026.

	/s/ Ambra R. Roth, Attorney-in-Fact	11/09/2026
	** 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.
* Form 4: SEC 1474 (03-26)