Ambra R. Roth - 28 Oct 2025 Form 4 Insider Report for MACOM Technology Solutions Holdings, Inc. (MTSI)

Role: SVP, GC and Secretary
Signature: /s/ Ambra R. Roth
Issuer symbol: MTSI
Transactions as of: 28 Oct 2025
Net transactions value: $0
Form type: 4
Filing time: 30 Oct 2025, 19:49:50 UTC
Previous filing: 29 Oct 2025
Next filing: 10 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Roth Ambra R.	SVP, GC and Secretary	C/O MACOM TECHNOLOGY SOLUTIONS HOLDINGS, 100 CHELMSFORD STREET, LOWELL	/s/ Ambra R. Roth	30 Oct 2025	0001792846

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MTSI	Common Stock	Award	$0	+2,332	+40%	$0.000000	8,140	28 Oct 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents restricted stock units ("RSUs") granted to the Reporting Person under the Issuer's 2021 Omnibus Incentive Plan. Each RSU represents the contingent right to receive one share of Common Stock. The RSUs vest as to 777 shares on 10/28/2026, 777 shares on 10/28/2027 and 778 shares on 10/28/2028, provided that the Reporting Person remains in continuous service with the Issuer through each such vesting date.

Content

Represents restricted stock units ("RSUs") granted to the Reporting Person under the Issuer's 2021 Omnibus Incentive Plan. Each RSU represents the contingent right to receive one share of Common Stock. The RSUs vest as to 777 shares on 10/28/2026, 777 shares on 10/28/2027 and 778 shares on 10/28/2028, provided that the Reporting Person remains in continuous service with the Issuer through each such vesting date.