A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 12 filings in this group are Form 4s for MACOM Technology Solutions Holdings, Inc.
The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.
Across the 12 insider filings shown, the breakdown is 9 open-market sale, 2 gift and 1 compensation award. 9 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.
Form 4
Open-market sale
Insider Selling
2026-10-05
MTSI insider Roth Ambra R. (SVP, GC and Secretary) sold 653 shares (~$195.9K)
Roth Ambra R., listed as SVP, GC and Secretary at MACOM Technology Solutions Holdings, Inc., reported an open-market sale of 653 MTSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
653 |
$300.00 |
$195.9K |
Filing: Form 4 (Insider Transaction)
Insider: Roth Ambra R. (SVP, GC and Secretary)
Shares: 653
Est. Value: $195.9K
Form 4
Open-market sale
Insider Selling
2026-09-01
MTSI insider Dennehy Robert (Senior VP and COO) sold 252 shares (~$69.4K)
Dennehy Robert, listed as Senior VP and COO at MACOM Technology Solutions Holdings, Inc., reported an open-market sale of 252 MTSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
252 |
$275.20 |
$69.4K |
Filing: Form 4 (Insider Transaction)
Insider: Dennehy Robert (Senior VP and COO)
Shares: 252
Est. Value: $69.4K
Form 4
Open-market sale
Insider Selling
2026-08-19
MTSI insider Kober John (Senior VP and CFO) sold 7,389 shares (~$2.41M)
Kober John, listed as Senior VP and CFO at MACOM Technology Solutions Holdings, Inc., reported an open-market sale of 7,389 MTSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
1,590 |
$320.57 |
$509.7K |
S |
Open-market sale
|
400 |
$323.97 |
$129.6K |
S |
Open-market sale
|
900 |
$325.26 |
$292.7K |
S |
Open-market sale
|
500 |
$326.51 |
$163.3K |
S |
Open-market sale
|
1,699 |
$327.78 |
$556.9K |
S |
Open-market sale
|
1,600 |
$328.78 |
$526.0K |
S |
Open-market sale
|
300 |
$329.75 |
$98.9K |
S |
Open-market sale
|
400 |
$330.67 |
$132.3K |
Filing: Form 4 (Insider Transaction)
Insider: Kober John (Senior VP and CFO)
Shares: 7,389
Est. Value: $2.41M
Form 4
Open-market sale
Insider Selling
2026-06-29
MTSI insider Hwang Donghyun Thomas (SVP, Global Sales) sold 2,620 shares (~$1.01M)
Hwang Donghyun Thomas, listed as SVP, Global Sales at MACOM Technology Solutions Holdings, Inc., reported an open-market sale of 2,620 MTSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
100 |
$367.30 |
$36.7K |
S |
Open-market sale
|
100 |
$369.99 |
$37.0K |
S |
Open-market sale
|
200 |
$375.34 |
$75.1K |
S |
Open-market sale
|
100 |
$379.80 |
$38.0K |
S |
Open-market sale
|
420 |
$382.04 |
$160.5K |
S |
Open-market sale
|
300 |
$382.91 |
$114.9K |
S |
Open-market sale
|
9 |
$384.35 |
$3.5K |
S |
Open-market sale
|
400 |
$386.62 |
$154.6K |
S |
Open-market sale
|
200 |
$387.25 |
$77.5K |
S |
Open-market sale
|
400 |
$388.65 |
$155.5K |
S |
Open-market sale
|
291 |
$389.74 |
$113.4K |
S |
Open-market sale
|
100 |
$391.94 |
$39.2K |
Filing: Form 4 (Insider Transaction)
Insider: Hwang Donghyun Thomas (SVP, Global Sales)
Shares: 2,620
Est. Value: $1.01M
Form 4
Open-market sale
Insider Selling
2026-06-02
MTSI insider Daly Stephen G (Director, President and CEO) sold 15,828 shares (~$5.79M)
Daly Stephen G, listed as Director, President and CEO at MACOM Technology Solutions Holdings, Inc., reported an open-market sale of 15,828 MTSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
1,500 |
$358.44 |
$537.7K |
S |
Open-market sale
|
2,200 |
$359.37 |
$790.6K |
S |
Open-market sale
|
400 |
$360.49 |
$144.2K |
S |
Open-market sale
|
904 |
$362.02 |
$327.3K |
S |
Open-market sale
|
2,429 |
$362.94 |
$881.6K |
S |
Open-market sale
|
2,075 |
$363.87 |
$755.0K |
S |
Open-market sale
|
2,820 |
$364.89 |
$1.03M |
S |
Open-market sale
|
300 |
$366.46 |
$109.9K |
S |
Open-market sale
|
600 |
$367.95 |
$220.8K |
S |
Open-market sale
|
300 |
$369.38 |
$110.8K |
S |
Open-market sale
|
300 |
$374.09 |
$112.2K |
S |
Open-market sale
|
200 |
$375.10 |
$75.0K |
S |
Open-market sale
|
400 |
$378.86 |
$151.5K |
S |
Open-market sale
|
100 |
$380.98 |
$38.1K |
S |
Open-market sale
|
100 |
$382.60 |
$38.3K |
S |
Open-market sale
|
100 |
$386.46 |
$38.6K |
S |
Open-market sale
|
551 |
$388.38 |
$214.0K |
S |
Open-market sale
|
149 |
$389.40 |
$58.0K |
S |
Open-market sale
|
400 |
$391.07 |
$156.4K |
Filing: Form 4 (Insider Transaction)
Insider: Daly Stephen G (Director, President and CEO)
Shares: 15,828
Est. Value: $5.79M
Form 4
Gift
Tax / Compensation Filing
2026-05-21
MTSI insider Form 4 filed for equity award, exercise, or tax withholding
Shanmugaraj Murugesan (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
G |
Gift
|
1,400 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Shanmugaraj Murugesan (Director)
Shares: 1,400
Form 4
Compensation award
Tax / Compensation Filing
2026-05-20
MTSI insider Form 4 filed for equity award, exercise, or tax withholding
Dennehy Robert (Senior VP and COO) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were granted as compensation rather than purchased. No cash changed hands, so the filing reflects a pay decision by the company, not a judgement about the price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
|
146 |
$138.13 |
$20.2K |
Filing: Form 4 (Insider Transaction)
Insider: Dennehy Robert (Senior VP and COO)
Shares: 146
Form 4
Open-market sale
Insider Selling
2026-05-20
MTSI insider Kober John (Senior VP and CFO) sold 7,644 shares (~$2.75M)
Kober John, listed as Senior VP and CFO at MACOM Technology Solutions Holdings, Inc., reported an open-market sale of 7,644 MTSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
|
108 |
$138.13 |
$14.9K |
S |
Open-market sale
|
500 |
$352.79 |
$176.4K |
S |
Open-market sale
|
800 |
$353.81 |
$283.0K |
S |
Open-market sale
|
700 |
$354.83 |
$248.4K |
S |
Open-market sale
|
1,144 |
$356.47 |
$407.8K |
S |
Open-market sale
|
800 |
$357.59 |
$286.1K |
S |
Open-market sale
|
741 |
$359.01 |
$266.0K |
S |
Open-market sale
|
759 |
$360.33 |
$273.5K |
S |
Open-market sale
|
300 |
$361.61 |
$108.5K |
S |
Open-market sale
|
363 |
$362.96 |
$131.8K |
S |
Open-market sale
|
537 |
$364.55 |
$195.8K |
S |
Open-market sale
|
400 |
$365.68 |
$146.3K |
S |
Open-market sale
|
400 |
$367.79 |
$147.1K |
S |
Open-market sale
|
200 |
$377.70 |
$75.5K |
Filing: Form 4 (Insider Transaction)
Insider: Kober John (Senior VP and CFO)
Shares: 7,644
Est. Value: $2.75M
Form 4
Open-market sale
Insider Selling
2026-05-20
MTSI insider Hwang Donghyun Thomas (SVP, Global Sales) sold 2,595 shares (~$935.9K)
Hwang Donghyun Thomas, listed as SVP, Global Sales at MACOM Technology Solutions Holdings, Inc., reported an open-market sale of 2,595 MTSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
A |
Compensation award
|
85 |
$138.13 |
$11.7K |
S |
Open-market sale
|
300 |
$353.32 |
$106.0K |
S |
Open-market sale
|
300 |
$355.06 |
$106.5K |
S |
Open-market sale
|
500 |
$356.68 |
$178.3K |
S |
Open-market sale
|
300 |
$358.84 |
$107.7K |
S |
Open-market sale
|
500 |
$360.38 |
$180.2K |
S |
Open-market sale
|
100 |
$362.89 |
$36.3K |
S |
Open-market sale
|
100 |
$364.93 |
$36.5K |
S |
Open-market sale
|
200 |
$367.50 |
$73.5K |
S |
Open-market sale
|
100 |
$369.06 |
$36.9K |
S |
Open-market sale
|
100 |
$377.70 |
$37.8K |
S |
Open-market sale
|
95 |
$381.23 |
$36.2K |
Filing: Form 4 (Insider Transaction)
Insider: Hwang Donghyun Thomas (SVP, Global Sales)
Shares: 2,595
Est. Value: $935.9K
Form 4
Gift
Tax / Compensation Filing
2026-05-20
MTSI insider Form 4 filed for equity award, exercise, or tax withholding
BLAND CHARLES R (Director) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
G |
Gift
|
400 |
— |
— |
G |
Gift
|
300 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: BLAND CHARLES R (Director)
Shares: 700
Form 4
Open-market sale
Insider Selling
2026-05-18
MTSI insider CHUNG PETER Y (Director) sold 43,268 shares (~$16.36M)
CHUNG PETER Y, listed as Director at MACOM Technology Solutions Holdings, Inc., reported an open-market sale of 43,268 MTSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
43,268 |
$378.20 |
$16.36M |
Filing: Form 4 (Insider Transaction)
Insider: CHUNG PETER Y (Director)
Shares: 43,268
Est. Value: $16.36M
Form 4
Open-market sale
Insider Selling
2026-05-15
MTSI insider BLAND CHARLES R (Director) sold 800 shares (~$304.0K)
BLAND CHARLES R, listed as Director at MACOM Technology Solutions Holdings, Inc., reported an open-market sale of 800 MTSI shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
800 |
$380.00 |
$304.0K |
Filing: Form 4 (Insider Transaction)
Insider: BLAND CHARLES R (Director)
Shares: 800
Est. Value: $304.0K