Ambarella Inc SEC Filings

Elizabeth M. Schwarting, a director of Ambarella Inc. (AMBA), reported a sale of 2,664 ordinary shares on 10/06/2025 at a weighted average price of $85.3772 per share (range $85.25 to $85.38). After the transaction she beneficially owned 7,314 shares, held directly. The Form 4 was filed indicating the sale was executed on 10/06/2025 and the filing was signed by an attorney‑in‑fact on 10/08/2025. The filing does not state a 10b5‑1 plan or provide reasons for the sale.

Ambarella, Inc. filed a Form 144 notifying a proposed sale of 2,664 common shares with an aggregate market value of $227,444.59. The shares are scheduled for sale approximately on 10/06/2025 on NASDAQ. The filing lists six restricted‑stock grants from the issuer dated between 12/15/2020 and 09/15/2025 that together total the 2,664 shares to be sold, and shows no securities sold by the reporting person in the past three months. The notice includes the standard representation that the seller is not aware of undisclosed material adverse information about the issuer.

Form 144 notice for AMBARELLA INC (AMBA): An officer/insider intends to sell 1,000 common shares on 09/22/2025 via Morgan Stanley Smith Barney LLC, with an aggregate market value listed at $89,000. The 1,000 shares were acquired as performance shares on 03/15/2021 and paid for on that date. The filing also discloses prior insider sales in the past three months totaling 6,869 shares for gross proceeds of $525,974.75 across five transactions dated 07/14/2025 through 09/19/2025. The filer certifies no undisclosed material adverse information. The table lists the broker, planned sale date, and securities exchange (NASDAQ).

John A. Young, who serves as an officer and director at Ambarella, reported a small sale and updated holdings. He disposed of 2,566 ordinary shares on 09/17/2025 at a price of $79.43 per share; the filing explains those shares were sold to pay tax obligations arising from the vesting of restricted stock units. After that transaction and recent activity, he beneficially owns 109,108 ordinary shares, which the filer notes includes 223 shares acquired under the company’s employee stock purchase plan on 09/15/2025. The Form 4 was signed by an attorney-in-fact on behalf of Mr. Young.

Chan W. Lee, Chief Operating Officer of Ambarella, reported a sale of 1,947 ordinary shares on 09/17/2025 at a price of $79.43 per share to cover tax obligations arising from the vesting of restricted stock units. After the sale, Mr. Lee beneficially owns 126,972 shares, which includes 223 shares acquired under the company's employee stock purchase plan on 09/15/2025. The Form 4 was filed as a single reporting person filing and bears a signature by an attorney-in-fact on 09/19/2025.

Leslie Kohn, Chief Technology Officer and director of Ambarella, reported a small sale of company stock on 09/17/2025. The filing shows 2,249 ordinary shares were sold at $79.43 per share under transaction code S, with the stated purpose that the shares were sold to pay tax obligations arising from restricted stock unit vesting.

After the sale, the filing reports 977,428 shares beneficially owned by Kohn. The transaction appears routine and limited in size relative to the reported holdings.

Chi-Hong Ju, Senior Vice President, Systems at Ambarella Inc (AMBA), reported a sale of 1,168 ordinary shares on 09/17/2025 at a price of $79.43 per share to cover tax obligations arising from the vesting of restricted stock units. After the transaction Mr. Ju directly beneficially owns 170,087 ordinary shares and indirectly holds 8,000 shares through a foundation. The filing also notes Mr. Ju acquired 223 shares under the company’s employee stock purchase plan on 09/15/2025. The Form 4 was signed by an attorney-in-fact on behalf of Mr. Ju on 09/19/2025.

Filing snapshot: AMBARELLA INC director and CEO Feng-Ming Wang reported a sale of 4,928 ordinary shares on 09/17/2025 at $79.43 per share. The filing states the sale was to pay tax obligations arising from the vesting of restricted stock units. After the transaction, Mr. Wang beneficially owned 788,929 shares, which the filing notes includes 223 shares purchased under the companys employee stock purchase plan on 09/15/2025.

Form 144 filed for Ambarella, Inc. (AMBA): The notice reports a proposed sale of 1,000 common shares through Morgan Stanley Smith Barney on 09/19/2025 with an aggregate market value of $84,000. The shares were acquired as performance shares on 03/15/2021. The filer, identified in related sales as Christopher Day, sold common shares on 07/14/2025 (2,907 shares), 09/08/2025 (1,772 shares), 09/17/2025 (361 shares), and 09/18/2025 (829 shares). The filing includes the standard representation that the seller is not aware of undisclosed material adverse information.