Company · Ownership research

MACOM Technology Solutions Holdings, Inc. MTSI

CIK 0001493594

Form 4 transactions dated Sep 1, 2023 to Sep 26, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 36 rows; the complete set is available through the API.

Insider filings on file run through 2026-09-01.

Some filings are submitted jointly by several insiders. The SEC form does not apportion the reported figures between them, so results include every joint filer.

Insider purchases & sales

Purchased: $0.00
Sold: $1.21B

Sep 1, 2023 – Sep 1, 2026
Available records · partial months are marked ·

2023, from Sep 1, 202310 of 14 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2023-12-15	Dennehy Robert SVP, Operations	Sale10b5-1 footnote	$174.67K 1,858 shares sold	4.45% sold Direct holding	▾
2023-12-12	Hwang Donghyun Thomas SVP, Global Sales	Sale10b5-1 footnote	$1.01M 11,517 shares sold	15.26% sold Direct holding	▾
2023-12-07	Dennehy Robert SVP, Operations	Sale10b5-1 footnote	$201.42K 2,373 shares sold	5.38% sold Direct holding	▾
2023-11-29	CARLSON DOUGLAS J SVP, Technology	Sale10b5-1 footnote	$1.02M 12,132 shares sold	71.26% sold Direct holding	▾
2023-11-29	Dennehy Robert SVP, Operations	Sale10b5-1 footnote	$40.39K 478 shares sold	1.07% sold Direct holding	▾
2023-11-29	Daly Stephen G President and CEO · Director	Sale10b5-1 footnote	$4.20M 50,000 shares sold	35.70% sold Direct holding	▾
2023-11-28	Daly Stephen G President and CEO · Director	Sale10b5-1 footnote	$4.14M 50,000 shares sold	26.31% sold Direct holding	▾
2023-11-28	Hwang Donghyun Thomas SVP, Global Sales	Sale10b5-1 footnote	$2.08M 25,085 shares sold	24.95% sold Direct holding	▾
2023-11-27	Kober John Senior VP and CFO	Sale10b5-1 footnote	$1.15M 13,703 shares sold	15.70% sold Direct holding	▾
2023-11-27	Roth Ambra R. SVP, GC and Secretary	Sale10b5-1 footnote	$715.96K 8,563 shares sold	51.51% sold Direct holding	▾

Showing 14 / 14 record groups in 2023. The complete set is available through the API.

MACOM Technology Solutions Holdings, Inc. · MTSI

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 14 of 14 purchase / sale groups and 30 of 36 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"MTSI","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.