Welcome to our dedicated page for Ambarella SEC filings (Ticker: AMBA), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Ambarella Inc (NASDAQ:AMBA) files quarterly and annual reports with the SEC that detail semiconductor revenue trends, research spending, and customer concentration risks. For a fabless chip company, these filings reveal critical dependencies on foundry partners, exposure to specific customer segments, and the capital allocation between product development and operations.
The company's 10-K annual reports break down revenue by geographic region and end market, showing which sectors—security cameras, automotive, or consumer devices—drive chip sales. Ambarella's 10-Q quarterly filings track how seasonal patterns and product cycles affect semiconductor demand. The company's filings also disclose customer concentration, identifying when a significant portion of revenue depends on a small number of large customers, which carries implications for revenue stability.
Form 4 filings document insider transactions, showing when executives and directors buy or sell Ambarella shares. These transactions occur within trading windows following earnings announcements and may reflect insider perspectives on company performance. The company's DEF 14A proxy statements detail executive compensation structures, revealing how stock-based compensation aligns management incentives with shareholder interests in the competitive semiconductor employment market.
Material events disclosed in 8-K filings include earnings announcements, significant customer agreements, and changes in foundry relationships. Our AI-powered summaries extract key financial metrics from dense accounting disclosures, highlighting revenue trends, gross margin changes, and research spending patterns. Access Ambarella's complete filing history to analyze the company's financial trajectory and strategic disclosures.
Ambarella, Inc. insider transaction: Chi-Hong Ju, Senior VP, Systems & GM, Asia, reported selling 3,765 ordinary shares of Ambarella Inc. on 12/30/2025. The sale, coded as an "S" transaction, was executed at a weighted average price of $70.32 per share, with individual trades occurring in a price range from $70.24 to $70.43 per share. After this sale, the reporting person beneficially owns 153,767 ordinary shares directly.
In addition, the filing shows 8,000 ordinary shares held indirectly by a foundation. The reporter has indicated willingness to provide detailed breakdowns of the number of shares sold at each price within the disclosed range to the Commission staff, the issuer, or any security holder upon request.
Ambarella Inc. director reports small share sale
A director of Ambarella Inc., Elizabeth M. Schwarting, reported selling 624 ordinary shares of the company on 12/16/2025. The sale was reported at a price of $72.3771 per share. After this transaction, she directly beneficially owns 6,690 Ambarella shares. The filing is made on behalf of one reporting person and reflects a routine insider transaction by a company director.
Ambarella Inc. director reports share transfer to family trust
A director of Ambarella Inc. reported an internal transfer of 2,531 ordinary shares on 12/15/2025 using transaction code G, which indicates a gift or similar transfer. The filing shows 2,531 shares disposed of at a stated price of $0.0 from the director’s direct holdings and the same 2,531 shares acquired by a family trust. After the transaction, the director holds 2,498 ordinary shares directly and 25,812 ordinary shares indirectly through the family trust. The director states that beneficial ownership of the trust shares is disclaimed except to the extent of any pecuniary interest.
Ambarella, Inc. reported that it has released a press release detailing its financial results for the third quarter of fiscal year 2026, which ended on October 31, 2025. The press release is provided as Exhibit 99.1 and is incorporated by reference for those results.
The company also announced that Leslie Kohn has voluntarily resigned, effective immediately, from his roles as a member of the Board of Directors and as Chief Technology Officer for strictly personal reasons. He will remain with Ambarella in a part-time role as Chief Technology Advisor, where he will continue to provide direction on the company’s technology strategy and product roadmap.
Ambarella (AMBA): Insider transaction disclosed. Senior VP, Systems & GM, Asia, Chi-Hong Ju reported open‑market sales of company stock on two dates. He sold 5,057 shares at $81.2919 on 10/13/2025 and 6,156 shares at $80.96 on 10/14/2025. Following these transactions, he beneficially owned 158,874 shares directly. He also reports 8,000 shares held indirectly by a foundation.
Elizabeth M. Schwarting, a director of Ambarella Inc. (AMBA), reported a sale of 2,664 ordinary shares on
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
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.
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