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  4. [Form 4] MACOM Technology Solutions Holdings, Inc. Insider Trading Activity

MACOM CEO sells 15,828 shares under 10b5-1 plan

MACOM Technology Solutions Holdings, Inc. President and CEO Stephen G. Daly reported multiple open-market sales of the company’s common stock.

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Form Type
4

Rhea-AI Filing Summary

MACOM Technology Solutions Holdings, Inc. President and CEO Stephen G. Daly reported multiple open-market sales of the company’s common stock. On May 29, 2026, he sold a total of 15,828 shares in 19 separate transactions.

The sales were made under a pre-arranged sales plan adopted on February 27, 2026 and intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934. Footnotes state the reported per-share prices are weighted averages, with individual trades executed in price ranges from about $357.82 to $391.18 per share.

Insider Daly Stephen G
Role President and CEO
Sold 15,828 shs ($5.79M)
Type Security Shares Price Value
Sale Common Stock 1,500 $358.44 $538K
Sale Common Stock 2,200 $359.37 $791K
Sale Common Stock 400 $360.49 $144K
Sale Common Stock 904 $362.02 $327K
Sale Common Stock 2,429 $362.94 $882K
Sale Common Stock 2,075 $363.87 $755K
Sale Common Stock 2,820 $364.89 $1.03M
Sale Common Stock 300 $366.46 $110K
Sale Common Stock 600 $367.95 $221K
Sale Common Stock 300 $369.38 $111K
Sale Common Stock 300 $374.09 $112K
Sale Common Stock 200 $375.10 $75K
Sale Common Stock 400 $378.86 $152K
Sale Common Stock 100 $380.98 $38K
Sale Common Stock 100 $382.60 $38K
Sale Common Stock 100 $386.46 $39K
Sale Common Stock 551 $388.38 $214K
Sale Common Stock 149 $389.40 $58K
Sale Common Stock 400 $391.07 $156K
Holdings After Transaction: Common Stock — 38,389 shares (Direct)
Footnotes (19)
  1. F1. The shares were sold pursuant to a sales plan adopted by the Reporting Person on February 27, 2026 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 $357.82 to $358.66. 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 $358.82 to $359.75. 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 $359.86 to $360.75. 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 $361.31 to $362.24. 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. F6. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $362.32 to $363.31. 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 $363.34 to $364.32. 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 $364.37 to $365.34. 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 $366.21 to $366.58. 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.
  10. F10. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $367.58 to $368.53. 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.
  11. F11. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $368.81 to $369.68. 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.
  12. F12. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $373.80 to $374.67. 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.
  13. F13. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $375.08 to $375.12. 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.
  14. F14. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $378.83 to $378.88. 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.
  15. F15. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $380.93 to $381.28. 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.
  16. F16. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $382.54 to $383.13. 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.
  17. F17. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $388.01 to $388.87. 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.
  18. F18. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $389.39 to $389.44. 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.
  19. F19. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $391.00 to $391.18. 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.
Shares sold 15,828 shares Total open-market sales of common stock on May 29, 2026
Number of sale transactions 19 transactions Open-market sales of MACOM common stock
Lowest trade price range $357.82–$358.66/share Price range for one weighted-average sale bucket (footnote F13)
Highest trade price range $391.00–$391.18/share Price range for one weighted-average sale bucket (footnote F19)
Plan adoption date February 27, 2026 Date CEO’s Rule 10b5-1 sales plan was adopted
Net buy/sell direction Net sell of 15,828 shares Transaction summary netBuySellShares and netBuySellDirection
Rule 10b5-1 regulatory
"intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934"
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.
sales plan financial
"The shares were sold pursuant to a sales plan adopted by the Reporting Person"
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.
open-market sale financial
"transaction_action": "open-market sale""
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.
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 MACOM (MTSI) report for Stephen G. Daly?
Stephen G. Daly reported selling 15,828 shares of MACOM common stock in 19 open-market transactions on May 29, 2026. All trades involved non-derivative common shares and were disclosed on a Form 4 insider filing.

At what prices did MACOM (MTSI) CEO Stephen G. Daly sell shares?
The Form 4 reports weighted average sale prices, with individual trades executed in ranges from $357.82 to $391.18 per share. Each transaction’s column 4 price reflects the average within its specific range, as detailed in multiple pricing footnotes.

Was the MACOM (MTSI) CEO’s May 29, 2026 stock sale pre-planned?
Yes. A footnote explains the shares were sold under a sales plan adopted on February 27, 2026, intended to comply with Rule 10b5-1. Such plans pre-schedule trades, reducing the significance of short-term market timing by the insider.

How many transactions were included in Stephen G. Daly’s MACOM (MTSI) Form 4?
The transaction summary shows 19 separate open-market sale transactions of MACOM common stock. Together they total 15,828 shares sold, all categorized as non-derivative common stock and coded as open-market sales (Code S).

Does the MACOM (MTSI) Form 4 include derivative exercises or gifts?
No. The transaction summary lists only open-market sales of common stock, with zero derivative exercises, gifts, tax withholdings, or restructuring transactions. All reported activity reflects straightforward sales of already-held common shares.

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

Form 4 Insider Transactions: What Each Field Means →
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Accepted by SEC EDGAR
SEC Form 4
FORM 4UNITED 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*
Daly Stephen G
(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)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
President and CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/29/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock05/29/2026S(1)1,500D$358.44(2)52,717D
Common Stock05/29/2026S(1)2,200D$359.37(3)50,517D
Common Stock05/29/2026S(1)400D$360.49(4)50,117D
Common Stock05/29/2026S(1)904D$362.02(5)49,213D
Common Stock05/29/2026S(1)2,429D$362.94(6)46,784D
Common Stock05/29/2026S(1)2,075D$363.87(7)44,709D
Common Stock05/29/2026S(1)2,820D$364.89(8)41,889D
Common Stock05/29/2026S(1)300D$366.46(9)41,589D
Common Stock05/29/2026S(1)600D$367.95(10)40,989D
Common Stock05/29/2026S(1)300D$369.38(11)40,689D
Common Stock05/29/2026S(1)300D$374.09(12)40,389D
Common Stock05/29/2026S(1)200D$375.1(13)40,189D
Common Stock05/29/2026S(1)400D$378.86(14)39,789D
Common Stock05/29/2026S(1)100D$380.98(15)39,689D
Common Stock05/29/2026S(1)100D$382.6(16)39,589D
Common Stock05/29/2026S(1)100D$386.4639,489D
Common Stock05/29/2026S(1)551D$388.38(17)38,938D
Common Stock05/29/2026S(1)149D$389.4(18)38,789D
Common Stock05/29/2026S(1)400D$391.07(19)38,389D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. The shares were sold pursuant to a sales plan adopted by the Reporting Person on February 27, 2026 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 $357.82 to $358.66. 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 $358.82 to $359.75. 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 $359.86 to $360.75. 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 $361.31 to $362.24. 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 $362.32 to $363.31. 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 $363.34 to $364.32. 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 $364.37 to $365.34. 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 $366.21 to $366.58. 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.
10. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $367.58 to $368.53. 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.
11. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $368.81 to $369.68. 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.
12. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $373.80 to $374.67. 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.
13. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $375.08 to $375.12. 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.
14. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $378.83 to $378.88. 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.
15. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $380.93 to $381.28. 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.
16. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $382.54 to $383.13. 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.
17. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $388.01 to $388.87. 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.
18. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $389.39 to $389.44. 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.
19. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $391.00 to $391.18. 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-Fact06/02/2026
** Signature of Reporting PersonDate
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

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