MACOM (NASDAQ: MTSI) director sells 2,244 shares of stock

Rhea-AI Filing Summary

MACOM Technology Solutions Holdings director Geoffrey G. Ribar reported an open-market sale of company stock. On February 25, 2026, he sold 2,244 shares of common stock at a weighted average price of $253.59 per share, in multiple trades between $253.01 and $253.94.

After this transaction, Ribar directly owns 13,410 MACOM common shares. The disclosure notes that detailed trade-by-trade pricing within the stated range is available on request from the company, its shareholders, or the SEC staff.

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^*

RIBAR GEOFFREY G

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
02/25/2026

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	02/25/2026		S		2,244	D	$253.59(1)	13,410	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. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $253.01 to $253.94. 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.

	/s/ Ambra R. Roth, Attorney-in-Fact	02/27/2026
	** 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.

FAQ

What insider transaction did MACOM (MTSI) director Geoffrey G. Ribar report?

MACOM director Geoffrey G. Ribar reported an open-market sale of 2,244 shares of common stock. The transaction occurred on February 25, 2026, and was disclosed on a Form 4 insider trading report filed with the SEC for MACOM Technology Solutions Holdings.

At what price did Geoffrey G. Ribar sell MACOM (MTSI) shares on February 25, 2026?

Geoffrey G. Ribar sold MACOM shares at a weighted average price of $253.59 per share. The Form 4 notes multiple trades executed within a price range from $253.01 to $253.94, and detailed pricing for each trade is available upon request from specified parties.

How many MACOM (MTSI) shares does Geoffrey G. Ribar own after this Form 4 sale?

Following the reported sale, Geoffrey G. Ribar directly owns 13,410 shares of MACOM common stock. This post-transaction ownership figure reflects his remaining direct holdings after disposing of 2,244 shares in the open market on February 25, 2026, as disclosed in the filing.

Was the MACOM (MTSI) insider sale by Geoffrey G. Ribar an open-market transaction?

Yes. The Form 4 describes Geoffrey G. Ribar’s activity as an open-market sale of common stock. The transaction code “S” and the description “Sale in open market or private transaction” confirm it was a sale rather than a share acquisition or grant-related movement.

Does the MACOM (MTSI) Form 4 detail each individual trade price for Geoffrey G. Ribar’s sale?

The Form 4 provides a weighted average price and a range from $253.01 to $253.94, not each trade. It states Ribar will supply full information on the number of shares sold at each price upon request to the issuer, its shareholders, or SEC staff.