Were Hwang’s MACOM (MTSI) share sales under a Rule 10b5-1 plan?

Yes. A Form 4 footnote states the shares were sold under a sales plan adopted on August 11, 2025, intended to comply with Rule 10b5-1. Such pre-arranged plans schedule trades in advance, reducing the significance of the specific trade-date timing for interpreting insider sentiment.

Planned MACOM (NASDAQ: MTSI) insider sale totals 3,718 shares

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

MACOM Technology Solutions Holdings, Inc. senior vice president of global sales Donghyun Thomas Hwang reported open-market sales of a total of 3,718 shares of common stock on April 30, 2026. The trades were executed at prices generally between $273.36 and $281.59 per share.

After these transactions, Hwang directly holds 34,886 shares of MACOM common stock. The filing states that the sales were made under a pre-arranged trading plan adopted on August 11, 2025 intended to comply with Rule 10b5-1, indicating the timing was set in advance rather than decided on the trade date.

Insider Trade Summary 10b5-1

Net Seller: 3,718 shares ($1,028,917)

Net Sell 9 txns

Insider Hwang Donghyun Thomas

Role SVP, Global Sales

Sold 3,718 shs ($1.03M)

Type	Security	Shares	Price	Value
Sale	Common Stock	100	$271.40	$27K
Sale	Common Stock	200	$273.48	$55K
Sale	Common Stock	1,518	$274.79	$417K
Sale	Common Stock	100	$275.73	$28K
Sale	Common Stock	200	$276.81	$55K
Sale	Common Stock	700	$278.42	$195K
Sale	Common Stock	635	$279.75	$178K
Sale	Common Stock	200	$280.88	$56K
Sale	Common Stock	65	$281.59	$18K

Holdings After Transaction: Common Stock — 38,504 shares (Direct, null)

Footnotes (1)

The shares were sold pursuant to a sales plan adopted by the Reporting Person on August 11, 2025 and intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $273.36 to $273.60. 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. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $274.36 to $275.26. 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. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $278.09 to $279.02. 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. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $279.28 to $280.24. 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. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $280.58 to $281.18. 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

Shares sold: 3,718 shares Post-transaction holdings: 34,886 shares Highest reported sale price: $281.59 per share +4 more

7 metrics

Shares sold 3,718 shares Total common stock sold on April 30, 2026

Post-transaction holdings 34,886 shares Direct MACOM common stock after sales

Highest reported sale price $281.59 per share Individual open-market sale price on April 30, 2026

Lowest disclosed price range $273.36–$273.60 Weighted average sale price range in one footnote

Highest disclosed price range $280.58–$281.18 Weighted average sale price range in one footnote

Number of sale transactions 9 transactions Non-derivative open-market sales of common stock

Trading plan adoption date August 11, 2025 Date Rule 10b5-1 sales plan was adopted

Key Terms

Rule 10b5-1, open-market sale, weighted average price, Common Stock, +1 more

5 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.

open-market sale financial

"transaction_action: open-market sale of common stock"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

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.

Common Stock financial

"security_title: Common Stock in each non-derivative transaction"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Form 4 regulatory

"INSIDER FILING DATA (Form 4) summarizing insider transactions"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Form 4 Insider Transactions: What Each Field Means →

05/04/2026 - 04:46 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^*

Hwang Donghyun Thomas

(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)
	SVP, Global Sales

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/30/2026

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)
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	04/30/2026		S⁽¹⁾		100	D	$271.4	38,504	D
Common Stock	04/30/2026		S⁽¹⁾		200	D	$273.48⁽²⁾	38,304	D
Common Stock	04/30/2026		S⁽¹⁾		1,518	D	$274.79⁽³⁾	36,786	D
Common Stock	04/30/2026		S⁽¹⁾		100	D	$275.73	36,686	D
Common Stock	04/30/2026		S⁽¹⁾		200	D	$276.81	36,486	D
Common Stock	04/30/2026		S⁽¹⁾		700	D	$278.42⁽⁴⁾	35,786	D
Common Stock	04/30/2026		S⁽¹⁾		635	D	$279.75⁽⁵⁾	35,151	D
Common Stock	04/30/2026		S⁽¹⁾		200	D	$280.88⁽⁶⁾	34,951	D
Common Stock	04/30/2026		S⁽¹⁾		65	D	$281.59	34,886	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. The shares were sold pursuant to a sales plan adopted by the Reporting Person on August 11, 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 $273.36 to $273.60. 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 $274.36 to $275.26. 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 $278.09 to $279.02. 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 $279.28 to $280.24. 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 $280.58 to $281.18. 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	05/04/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What did MACOM (MTSI) insider Donghyun Thomas Hwang report in the latest Form 4?

He reported selling 3,718 shares of MACOM common stock in open-market transactions. The trades occurred on April 30, 2026, and were executed at prices mostly between $273.36 and $281.59 per share, according to the Form 4 filing’s transaction details and footnotes.

At what prices did MACOM (MTSI) SVP Hwang sell his shares?

The filing shows weighted average sale prices across several trades, with ranges from $273.36 to $273.60 and up to $280.58 to $281.18. Individual line items also report specific prices, resulting in an overall sale band roughly between $273.36 and $281.59 per share.

How many MACOM (MTSI) shares does Hwang hold after these sales?

After completing the reported transactions, Donghyun Thomas Hwang directly owns 34,886 shares of MACOM common stock. This post-transaction balance is listed in the Form 4 for the final reported sale and reflects his remaining direct equity stake following the 3,718-share net disposition.

What role does Donghyun Thomas Hwang hold at MACOM (MTSI)?

The Form 4 identifies Donghyun Thomas Hwang as an officer of MACOM Technology Solutions Holdings, serving as Senior Vice President, Global Sales. His reported transactions therefore represent insider activity by a key sales executive with direct holdings in the company’s common stock.

How many transactions were included in Hwang’s MACOM (MTSI) Form 4 filing?

The transaction summary indicates nine separate non-derivative sale entries, all involving MACOM common stock. Together, these open-market sales total 3,718 shares. Several entries use weighted average prices, reflecting multiple executions within disclosed intraday price ranges for each reported trade.