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SEC Form 4 research

AMBARELLA INC insider transactions

Inspect AMBARELLA INC's public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0001280263
Reporting owners
42
Officers and directors
14
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

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2026-09-282026-09-25PAISLEY CHRISTOPHER BS250$70.76Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-09-25 and its public availability date is 2026-09-28. Subtracting those calendar dates gives 3 days of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code S: a sale. A purchase-following rule excludes this sale even if the reported dollar amount is large.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC accession 0001280263-26-000077 ↗SEC accession 0001280263-26-000075 ↗SEC accession 0001280263-26-000073 ↗

Recent insider disclosures

Inspect all 13 displayed rows: Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Scroll sideways to compare all columns. Select a heading to sort.

2026-09-282026-09-25PAISLEY CHRISTOPHER BS250$70.76Not reported
2026-09-212026-09-18Young John AlexanderS1,896$67.28Not reported
2026-09-182026-09-17Wang Feng-MingS6,086$64.83Not reported
2026-09-182026-09-17Ju Chi-HongS2,009$64.83Not reported
2026-09-182026-09-17Lee Chan WS2,893$64.83Not reported
2026-09-182026-09-17Young John AlexanderS3,126$64.83Not reported
2026-09-102026-09-08Hu ChenmingA3,151$0Not reported
2026-09-102026-09-08Bryant Gregory MA3,151$0Not reported
2026-09-102026-09-08Breithaupt Chantelle YvetteA3,151$0Not reported
2026-09-102026-09-08Schwarting Elizabeth MA3,151$0Not reported
2026-09-102026-09-08Hon Hsiao-WuenA3,151$0Not reported
2026-09-102026-09-08RICHARDSON DAVID JEFFREYA3,151$0Not reported
2026-09-102026-09-08PAISLEY CHRISTOPHER BA3,151$0Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 19 displayed rows: Officers and directors in the directory

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Chen Yun-Lung000160267627
Schwarting Elizabeth M000181404821
Kohn Leslie0001558645118
Wang Feng-Ming0001558686166
VERHALEN ANDREW W000120597910
Hu Chenming000131632021
Day Christopher0001558685146
EICHLER KEVIN C000110396532
Hon Hsiao-Wuen00017159831
Ju Chi-Hong000188283144
Laplante George000155864635
Lee Chan W000188282535
LeGall Didier000155867839
Meng Teresa H0001277622320
PAISLEY CHRISTOPHER B0001189229200
RICHARDSON DAVID JEFFREY000132972419
TAN LIP BU0001008463394
WHITE BRIAN C000143802930
Young John Alexander000200986619
Chen Yun-Lung ↗Schwarting Elizabeth M ↗Kohn Leslie ↗Wang Feng-Ming ↗VERHALEN ANDREW W ↗Hu Chenming ↗Day Christopher ↗EICHLER KEVIN C ↗Hon Hsiao-Wuen ↗Ju Chi-Hong ↗Laplante George ↗Lee Chan W ↗LeGall Didier ↗Meng Teresa H ↗PAISLEY CHRISTOPHER B ↗RICHARDSON DAVID JEFFREY ↗TAN LIP BU ↗WHITE BRIAN C ↗Young John Alexander ↗

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.