Company · Ownership research

ONTO INNOVATION INC. ONTO

CIK 0000704532

Form 4 transactions dated Nov 1, 2023 to Nov 7, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 60 rows; the complete set is available through the API.

Insider filings on file run through Oct 1, 2026.

Insider purchases & sales

Purchased: $0.00
Sold: $28.38M

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

20249 of 9 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Nov 15, 2024	Slicer Mark Chief Financial Officer	Sale10b5-1 footnote	$176.45K 1,100 shares sold	9.14% sold Direct holding	▾
Sep 3, 2024	Vedula Srinivas SVP, Customer Success	Sale10b5-1 footnote	$264.23K 1,275 shares sold	7.36% sold Direct holding	▾
Jun 10, 2024	Vedula Srinivas SVP, Customer Success	Sale10b5-1 footnote	$317.11K 1,486 shares sold	7.85% sold Direct holding	▾
Jun 7, 2024	Slicer Mark Chief Financial Officer	Sale10b5-1 footnote	$112.71K 519 shares sold	4.13% sold Direct holding	▾
Jun 6, 2024	Slicer Mark Chief Financial Officer	Sale10b5-1 footnote	$114.81K 519 shares sold	3.97% sold Direct holding	▾
Mar 20, 2024	Plisinski Michael P CEO · Director	Sale10b5-1 footnote	$7.02M 40,000 shares sold	14.52% sold Direct holding	▾
Mar 18, 2024	OH Yoon Ah VP, General Counsel & Corp Sec	Sale10b5-1 footnote	$303.30K 1,685 shares sold	10.15% sold Direct holding	▾
Mar 15, 2024	OH Yoon Ah VP, General Counsel & Corp Sec	Sale10b5-1 footnote	$467.08K 2,685 shares sold	13.92% sold Direct holding	▾
Feb 13, 2024	MILLER DAVID BRIAN Director	Sale	$477.37K 2,800 shares sold	23.71% sold Direct holding	▾

Showing 9 / 9 record groups in 2024. The complete set is available through the API.

ONTO INNOVATION INC. · ONTO

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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 9 of 9 purchase / sale groups and 30 of 60 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"ONTO","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. 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.