Company · Ownership research

Ultra Clean Holdings, Inc. UCTT

CIK 0001275014

Form 4 transactions dated Nov 1, 2023 to Nov 10, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through Nov 3, 2026.

Insider purchases & sales

Purchased: $1.49M
Sold: $18.64M

Nov 1, 2023 – Nov 3, 2026
Available records · partial months are marked ·

Insiders in this window

202610 of 14 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Jul 2, 2026	HARDING BRIAN E Chief Accounting Officer	Sale10b5-1 footnote	$494.02K 3,837 shares sold	10.25% sold Direct holding	▾
Jun 4, 2026	Savage Sheri CFO	Sale	$1.29M 14,421 shares sold	17.83% sold Direct holding	▾
Jun 4, 2026	Savage Sheri CFO	Sale	$1.41M 15,766 shares sold	23.72% sold Direct holding	▾
Jun 4, 2026	HARDING BRIAN E Chief Accounting Officer	Sale	$1.52M 16,988 shares sold	37.72% sold Direct holding	▾
Jun 2, 2026	Cho Paul Yoonku General Counsel and Secretary	Sale	$84.37K 944 shares sold	3.95% sold Direct holding	▾
May 27, 2026	LIGGETT EMILY M Director	Sale	$755.69K 8,198 shares sold	17.69% sold Direct holding	▾
May 14, 2026	McKibben Jeffrey L. Chief Information Officer	Sale	$365.83K 4,205 shares sold	27.03% sold Direct holding	▾
May 8, 2026	Cho Paul Yoonku General Counsel and Secretary	Sale	$173.78K 2,000 shares sold	11.21% sold Direct holding	▾
May 8, 2026	McKibben Jeffrey L. Chief Information Officer	Sale	$216.20K 2,500 shares sold	13.85% sold Direct holding	▾
May 5, 2026	Palfrey Jamie J. SVP, Global Human Resources	Sale	$692.89K 8,691 shares sold	34.57% sold Direct holding	▾

Showing 14 / 14 record groups in 2026. The complete set is available through the API.

Ultra Clean Holdings, Inc. · UCTT

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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 29 of 29 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"UCTT","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. Share totals are on today's split-adjusted basis. 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.