MACOM CFO sells 7,389 shares around $320–$331

Rhea-AI Filing Summary

MACOM Technology Solutions Holdings, Inc. (MTSI) reported that its Senior VP and CFO, John Kober, sold a total of 7,389 shares of common stock on August 17, 2026 in a series of open-market transactions at weighted average prices between approximately $320.48 and $330.82 per share. The sales were executed under a pre-arranged Rule 10b5-1 trading plan adopted on August 14, 2025.

Insider Trade Summary 10b5-1

Net Seller: 7,389 shares

Net Sell 8 txns

Insider Kober John

Role Senior VP and CFO

Sold 7,389 shs ($2.41M)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	1,590	$320.57	$510K
Sale	Common Stock F1, F3	400	$323.97	$130K
Sale	Common Stock F1, F4	900	$325.26	$293K
Sale	Common Stock F1, F5	500	$326.51	$163K
Sale	Common Stock F1, F6	1,699	$327.78	$557K
Sale	Common Stock F1, F7	1,600	$328.78	$526K
Sale	Common Stock F1, F8	300	$329.75	$99K
Sale	Common Stock F1, F9	400	$330.67	$132K

Holdings After Transaction: Common Stock — 33,583 shares (Direct)

Footnotes (9)

1. F1. The shares were sold pursuant to a sales plan adopted by the Reporting Person on August 14, 2025 and intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934.
2. F2. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $320.48 to $321.20. 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.
3. F3. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $323.77 to $324.19. 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.
4. F4. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $324.97 to $325.73. 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. F5. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $325.99 to $326.97. 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.
6. F6. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $327.33 to $328.19. 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.
7. F7. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $328.33 to $329.16. 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.
8. F8. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $329.48 to $330.03. 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.
9. F9. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $330.51 to $330.82. 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.

Key Figures

Total shares sold: 7,389 shares Largest single-line sale: 1,699 shares Lowest weighted average price: $320.57 per share +5 more

8 metrics

Total shares sold 7,389 shares Aggregate common stock sales by CFO John Kober on August 17, 2026

Largest single-line sale 1,699 shares Single Form 4 transaction of common stock sold on August 17, 2026

Lowest weighted average price $320.57 per share One transaction’s reported weighted average sale price for common stock

Highest weighted average price $330.67 per share One transaction’s reported weighted average sale price for common stock

Overall low price range $320.48 per share Lowest price in the detailed trade ranges across all reported sales

Overall high price range $330.82 per share Highest price in the detailed trade ranges across all reported sales

Rule 10b5-1 plan adoption date August 14, 2025 Date CFO John Kober adopted the trading plan used for these sales

Number of sale transactions 8 Count of separate non-derivative sale entries on the Form 4

Key Terms

Rule 10b5-1, weighted average price, Securities Exchange Act of 1934

3 terms

Rule 10b5-1 regulatory

"intended to comply with Rule 10b5-1 under the Securities Exchange Act"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

weighted average price financial

"The price reported in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Securities Exchange Act of 1934 regulatory

"intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934."

FAQ

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

What insider transaction did MTSI disclose for CFO John Kober on August 17, 2026?

MACOM (MTSI) disclosed that CFO John Kober sold 7,389 shares of common stock on August 17, 2026 under a pre-arranged Rule 10b5-1 trading plan, in multiple open-market transactions at weighted average prices around the low-to-mid $320–$330 range.

How many MTSI shares did CFO John Kober sell and at what prices?

CFO John Kober sold 7,389 MTSI shares in several trades. Reported weighted average prices per trade ranged from about $320.57 to $330.67, with underlying transaction price ranges spanning approximately $320.48 to $330.82 per share, as detailed in the filing footnotes.

Were the August 17, 2026 MTSI insider sales under a Rule 10b5-1 plan?

Yes. The sales by MTSI CFO John Kober on August 17, 2026 were executed under a Rule 10b5-1 trading plan adopted on August 14, 2025, indicating pre-arranged transactions rather than discretionary same-day trading decisions.

What type of security did MTSI CFO John Kober sell in this Form 4 filing?

MTSI CFO John Kober sold common stock. All eight reported transactions involved the company’s common shares, executed as open-market sales, with each line item showing a specific share count and a weighted average price per share qualified by detailed price ranges.

How many separate sale transactions did MTSI report for CFO John Kober on this Form 4?

The Form 4 for MTSI lists eight separate non-derivative sale transactions for CFO John Kober on August 17, 2026. Each transaction line has its own share amount and weighted average price, with associated footnotes describing the underlying trade price ranges.

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

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 08/19/2026 - 04:17 PM Accepted by SEC EDGAR 08/19/2026 - 04:15 PM Learn about SEC filing dates

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).

X

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^*

Kober John

(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 CFO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/17/2026

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	08/17/2026		S(1)		1,590	D	$320.57(2)	39,382	D
Common Stock	08/17/2026		S(1)		400	D	$323.97(3)	38,982	D
Common Stock	08/17/2026		S(1)		900	D	$325.26(4)	38,082	D
Common Stock	08/17/2026		S(1)		500	D	$326.51(5)	37,582	D
Common Stock	08/17/2026		S(1)		1,699	D	$327.78(6)	35,883	D
Common Stock	08/17/2026		S(1)		1,600	D	$328.78(7)	34,283	D
Common Stock	08/17/2026		S(1)		300	D	$329.75(8)	33,983	D
Common Stock	08/17/2026		S(1)		400	D	$330.67(9)	33,583	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 shares were sold pursuant to a sales plan adopted by the Reporting Person on August 14, 2025 and intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934.

2. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $320.48 to $321.20. 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.

3. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $323.77 to $324.19. 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.

4. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $324.97 to $325.73. 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. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $325.99 to $326.97. 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.

6. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $327.33 to $328.19. 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.

7. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $328.33 to $329.16. 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.

8. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $329.48 to $330.03. 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.

9. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $330.51 to $330.82. 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	08/19/2026
	** 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)