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Ambarella Inc. (AMBA)

Ambarella Inc. (AMBA) Insider Trading

Directors, officers and holders of more than 10% of AMBA report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 190 transactions on file: 0 with code P, 29 with code S and 21 with other codes.

DateInsiderCodeShares
Sep 25, 2026PAISLEY CHRISTOPHER BS Sale250
Sep 18, 2026Young John AlexanderS Sale1,896
Sep 17, 2026Wang Feng-MingS Sale6,086
Sep 17, 2026Young John AlexanderS Sale3,126
Sep 17, 2026Ju Chi-HongS Sale2,009
Sep 17, 2026Lee Chan WS Sale2,893
Sep 8, 2026Bryant Gregory MA Award3,151
Sep 8, 2026Hon Hsiao-WuenA Award3,151
Sep 8, 2026Breithaupt Chantelle YvetteA Award3,151
Sep 8, 2026Hu ChenmingA Award3,151
Sep 8, 2026RICHARDSON DAVID JEFFREYA Award3,151
Sep 8, 2026PAISLEY CHRISTOPHER BA Award3,151
Sep 8, 2026Schwarting Elizabeth MA Award3,151
Jul 9, 2026Chen Yun-LungS Sale5,958
Jul 1, 2026Wang Feng-MingS Sale16,250
Jul 1, 2026Ju Chi-HongS Sale10,000
Jun 26, 2026PAISLEY CHRISTOPHER BS Sale250
Jun 17, 2026Lee Chan WS Sale2,951
Jun 17, 2026Wang Feng-MingG Gift10,000
Jun 17, 2026Young John AlexanderS Sale1,847
Jun 17, 2026Young John AlexanderS Sale3,186
Jun 17, 2026Ju Chi-HongS Sale2,017
Jun 17, 2026Wang Feng-MingS Sale6,204
Jun 12, 2026Chen Yun-LungS Sale9,856
May 26, 2026Young John AlexanderM Exercise400
May 26, 2026Young John AlexanderM Exercise400
May 26, 2026Wang Feng-MingS Sale9,150
May 26, 2026Wang Feng-MingS Sale6,065
May 26, 2026Wang Feng-MingS Sale17,285
May 26, 2026Young John AlexanderS Sale400
Apr 21, 2026Young John AlexanderS Sale1,971
Mar 19, 2026Ju Chi-HongS Sale2,155
Mar 19, 2026Young John AlexanderS Sale3,038
Mar 19, 2026Wang Feng-MingS Sale8,083
Mar 19, 2026Lee Chan WS Sale3,641
Mar 18, 2026Ju Chi-HongA Award5,930
Mar 18, 2026Chen Yun-LungA Award2,849
Mar 18, 2026Young John AlexanderA Award5,560
Mar 18, 2026Wang Feng-MingA Award15,686
Mar 18, 2026Lee Chan WA Award7,320
Mar 17, 2026Ju Chi-HongM Exercise9,553
Mar 17, 2026Ju Chi-HongS Sale4,729
Mar 17, 2026Lee Chan WM Exercise13,678
Mar 17, 2026Chen Yun-LungM Exercise4,651
Mar 17, 2026Young John AlexanderS Sale4,577
Mar 17, 2026Young John AlexanderM Exercise3,556
Mar 17, 2026Wang Feng-MingS Sale18,976
Mar 17, 2026Wang Feng-MingM Exercise27,598
Mar 17, 2026Lee Chan WS Sale6,729
Mar 17, 2026Young John AlexanderM Exercise3,556

The full Form 4 history is on the AMBA company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.