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

MTSI insider activity: 1,497 shares sold; 623 withheld for taxes

Filing Impact
(Moderate)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

MACOM Technology Solutions (MTSI) Senior VP & CFO reported Form 4 activity. On 10/27/2025, 623 shares were withheld for taxes upon RSU vesting at $146.39. On 10/28/2025, sales under a Rule 10b5-1 plan totaled 1,497 shares: 797 at a weighted average $145.10 (range $144.73–$145.50) and 700 at $146.01. Following these transactions, direct ownership was 43,580 shares.

Positive

  • None.

Negative

  • None.
Insider Kober John
Role Senior VP and CFO
Sold 1,497 shs ($218K)
Type Security Shares Price Value
Sale Common Stock 797 $145.10 $116K
Sale Common Stock 700 $146.01 $102K
Tax Withholding Common Stock 623 $146.39 $91K
Holdings After Transaction: Common Stock — 44,280 shares (Direct)
Footnotes (1)
  1. Shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of restricted stock units on October 27, 2025. 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. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $144.73 to $145.50. 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.
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Form 4 Insider Transactions: What Each Field Means →
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 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)
Director 10% Owner
X Officer (give title below) Other (specify below)
Senior VP and CFO
3. Date of Earliest Transaction (Month/Day/Year)
10/27/2025
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 10/27/2025 F 623(1) D $146.39 45,077 D
Common Stock 10/28/2025 S(2) 797 D $145.1(3) 44,280 D
Common Stock 10/28/2025 S(2) 700 D $146.01 43,580 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. Shares withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations in connection with the vesting of restricted stock units on October 27, 2025.
2. 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.
3. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $144.73 to $145.50. 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 10/29/2025
** 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.

Source: View Original Filing on SEC EDGAR

FAQ

What insider activity did MTSI report on Form 4?

The Senior VP & CFO reported 623 shares withheld for taxes on RSU vesting and sales totaling 1,497 shares on 10/28/2025.

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

Two sales: 797 shares at a weighted average $145.10 (range $144.73–$145.50) and 700 shares at $146.01.

Was a trading plan used for the MTSI sales?

Yes. The sales were made under a plan adopted on August 14, 2025 intended to comply with Rule 10b5-1.

Why were 623 MTSI shares withheld on 10/27/2025?

They were withheld to satisfy the reporting person’s tax obligations upon RSU vesting.

What is the CFO’s direct MTSI share ownership after these trades?

Direct ownership was 43,580 shares after the reported transactions.

What is the reporting person’s role at MTSI?

The reporting person is Senior VP and CFO of MACOM Technology Solutions.