John Kober - 17 Aug 2026 Form 4 Insider Report for MACOM Technology Solutions Holdings, Inc. (MTSI)

Reporting relationship: Senior VP and CFO
Issuer ticker: MTSI
Reported as of: 17 Aug 2026
Net transaction value: -$2,409,423
SEC form: 4
Accepted by SEC: 19 Aug 2026, 16:15:58 UTC
Prior SEC filing: 20 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Ambra R. Roth, Attorney-in-Fact

Key filing fact

John Kober filed Form 4 for MACOM Technology Solutions Holdings, Inc. (MTSI) on 19 Aug 2026.

Key facts

This page summarizes John Kober's Form 4 filing for MACOM Technology Solutions Holdings, Inc. (MTSI).
8 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 19 Aug 2026, 16:15.

Change

Previous filing in this sequence was filed on 20 May 2026.
Current net transaction value: -$2,409,423.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001338249 Primary reporting owner

Kober John

Relationship: Senior VP and CFO
Address: C/O MACOM TECHNOLOGY SOLUTIONS HOLDINGS, 100 CHELMSFORD STREET, LOWELL
Signature: /s/ Ambra R. Roth, Attorney-in-Fact
Signature date: 19 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MTSI transaction

Common Stock

Sale

Transaction value: $509,706
Shares: -1,590
Change %: -3.9%
Price: $320.57
Shares after: 39,382
Date: 17 Aug 2026
Ownership: Direct
Footnotes: F1, F2

MTSI transaction

Common Stock

Sale

Transaction value: $129,588
Shares: -400
Change %: -1%
Price: $323.97
Shares after: 38,982
Date: 17 Aug 2026
Ownership: Direct
Footnotes: F1, F3

MTSI transaction

Common Stock

Sale

Transaction value: $292,734
Shares: -900
Change %: -2.3%
Price: $325.26
Shares after: 38,082
Date: 17 Aug 2026
Ownership: Direct
Footnotes: F1, F4

MTSI transaction

Common Stock

Sale

Transaction value: $163,255
Shares: -500
Change %: -1.3%
Price: $326.51
Shares after: 37,582
Date: 17 Aug 2026
Ownership: Direct
Footnotes: F1, F5

MTSI transaction

Common Stock

Sale

Transaction value: $556,898
Shares: -1,699
Change %: -4.5%
Price: $327.78
Shares after: 35,883
Date: 17 Aug 2026
Ownership: Direct
Footnotes: F1, F6

MTSI transaction

Common Stock

Sale

Transaction value: $526,048
Shares: -1,600
Change %: -4.5%
Price: $328.78
Shares after: 34,283
Date: 17 Aug 2026
Ownership: Direct
Footnotes: F1, F7

MTSI transaction

Common Stock

Sale

Transaction value: $98,925
Shares: -300
Change %: -0.88%
Price: $329.75
Shares after: 33,983
Date: 17 Aug 2026
Ownership: Direct
Footnotes: F1, F8

MTSI transaction

Common Stock

Sale

Transaction value: $132,268
Shares: -400
Change %: -1.2%
Price: $330.67
Shares after: 33,583
Date: 17 Aug 2026
Ownership: Direct
Footnotes: F1, F9

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 9 footnotes

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.