Company · Ownership research

AMBARELLA INC AMBA

CIK 0001280263

Form 4 transactions dated Nov 1, 2023 to Nov 9, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 38 rows; the complete set is available through the API.

Insider filings on file run through Sep 28, 2026.

Insider purchases & sales

Purchased: $0.00
Sold: $30.91M

Nov 1, 2023 – Sep 28, 2026
Available records · partial months are marked ·

202610 of 28 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Sep 25, 2026	PAISLEY CHRISTOPHER B Director	Sale10b5-1 footnote	$17.69K 250 shares sold	0.57% sold Direct holding	▾
Sep 18, 2026	Young John Alexander CFO	Sale10b5-1 footnote	$127.56K 1,896 shares sold	1.73% sold Direct holding	▾
Sep 17, 2026	Wang Feng-Ming CEO · Director	Sale	$394.56K 6,086 shares sold	0.79% sold Direct holding	▾
Sep 17, 2026	Ju Chi-Hong Senior VP, Systems & GM	Sale	$130.24K 2,009 shares sold	1.29% sold Direct holding	▾
Sep 17, 2026	Lee Chan W Chief Operations Officer	Sale	$187.55K 2,893 shares sold	1.84% sold Direct holding	▾
Sep 17, 2026	Young John Alexander CFO	Sale	$202.66K 3,126 shares sold	2.77% sold Direct holding	▾
Jul 9, 2026	Chen Yun-Lung VP, Business Dev. & Marketing	Sale	$468.66K 5,958 shares sold	8.96% sold Direct holding	▾
Jul 1, 2026	Ju Chi-Hong Senior VP, Systems & GM	Sale	$888.40K 10,000 shares sold	6.03% sold Direct holding	▾
Jul 1, 2026	Wang Feng-Ming CEO · Director	Sale10b5-1 footnote	$1.46M 16,250 shares sold	2.06% sold Direct holding	▾
Jun 26, 2026	PAISLEY CHRISTOPHER B Director	Sale10b5-1 footnote	$15.50K 250 shares sold	0.61% sold Direct holding	▾

Showing 28 / 28 record groups in 2026. The complete set is available through the API.

AMBARELLA INC · AMBA

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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 28 of 28 purchase / sale groups and 30 of 38 other groups; the totals and the monthly series cover the whole window.

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