Company · Ownership research

MACOM Technology Solutions Holdings, Inc. MTSI

CIK 0001493594

Form 4 transactions dated Sep 1, 2023 to Sep 25, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

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

Insider purchases & sales

Purchased: $0.00
Sold: $1.21B

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

202610 of 24 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2026-08-28	Dennehy Robert Senior VP and COO	Sale10b5-1 footnote	$69.35K 252 shares sold	1.94% sold Direct holding	▾
2026-08-17	Kober John Senior VP and CFO	Sale10b5-1 footnote	$2.41M 7,389 shares sold	18.03% sold Direct holding	▾
2026-06-25	Hwang Donghyun Thomas SVP, Global Sales	Sale10b5-1 footnote	$1.01M 2,620 shares sold	8.09% sold Direct holding	▾
2026-05-29	Daly Stephen G President and CEO · Director	Sale10b5-1 footnote	$5.79M 15,828 shares sold	29.19% sold Direct holding	▾
2026-05-18	Kober John Senior VP and CFO	Sale10b5-1 footnote	$2.75M 7,644 shares sold	15.72% sold Direct holding	▾
2026-05-18	Hwang Donghyun Thomas SVP, Global Sales	Sale10b5-1 footnote	$935.87K 2,595 shares sold	7.42% sold Direct holding	▾
2026-05-14	CHUNG PETER Y Director	Sale	$16.36M 43,268 shares sold	86.45% sold Indirect holding	▾
2026-05-13	BLAND CHARLES R Director	Sale	$304.00K 800 shares sold	5.28% sold Direct holding	▾
2026-05-11	RIBAR GEOFFREY G Director	Sale	$587.27K 1,623 shares sold	11.44% sold Direct holding	▾
2026-04-30	Hwang Donghyun Thomas SVP, Global Sales	Sale10b5-1 footnote	$1.03M 3,718 shares sold	9.63% sold Direct holding	▾

Showing 24 / 24 record groups in 2026. 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 24 of 24 purchase / sale groups and 12 of 12 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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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.