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. (AMBA) – Form 4 Insider Transaction
Chief Operating Officer Chan W. Lee filed a Form 4 reporting a sale of 1,601 ordinary shares on 17 June 2025 at an average price of $52.26. The disclosure states the shares were sold to satisfy tax obligations arising from the vesting of restricted stock units (RSUs). Following the transaction, Lee’s direct ownership stands at 128,696 shares.
No derivative securities were involved and no Rule 10b5-1 trading plan was indicated in the filing. The sale represents roughly 1.2 % of Lee’s reported holdings, a level generally considered routine for tax-withholding purposes rather than a material reduction in economic exposure.
Given the modest size and stated purpose of the disposition, the filing is unlikely to materially affect Ambarella’s investment thesis or signal a strategic shift by management.
Leslie Kohn, Chief Technology Officer and Director of Ambarella (AMBA), reported a sale of 1,715 ordinary shares on June 17, 2025, at a price of $52.26 per share. The transaction was specifically executed to cover tax obligations arising from the vesting of restricted stock units.
Following the reported transaction, Kohn maintains direct beneficial ownership of 979,677 shares of Ambarella. This Form 4 filing indicates the executive continues to hold a significant equity position in the company despite the tax-related sale.
- Transaction was executed under tax obligation requirements, not discretionary selling
- Kohn serves dual roles as both CTO and Director
- Filing was completed through attorney-in-fact Michael Morehead on June 20, 2025
- No derivative securities were involved in this transaction
Ambarella, Inc. (symbol AMBA) has filed a Form 4 detailing a minor insider transaction by Senior Vice President, Systems, Chi-Hong Ju. On 06/17/2025 the executive sold 1,108 ordinary shares of AMBA at $52.26 per share, for gross proceeds of roughly $57.9 thousand. A single explanatory note states the shares were sold strictly to cover tax withholding obligations associated with the vesting of restricted stock units (RSUs).
After completing the sale, Mr. Ju still directly owns 171,032 ordinary shares and indirectly holds 8,000 additional shares through a foundation, leaving more than 99 % of his prior direct stake intact. The filing shows no derivative security activity and no indication that the trade occurred under a Rule 10b5-1 plan.
The sale represents less than 1 % of Mr. Ju’s direct holdings and appears routine. No operational, strategic, or earnings-related information is provided in this document, and there are no indications of broader insider sentiment shifts.
Ambarella, Inc. (AMBA) – Form 4 insider transaction
CEO and Director Feng-Ming Wang reported a sale of 4,677 ordinary shares on 06/17/2025, coded “S” for disposal. The shares were sold at $52.26 each, implying proceeds of roughly $0.24 million. The filing notes that the shares were "sold to pay tax obligations resulting from the vesting of restricted stock units", indicating a routine tax-withholding sale rather than a discretionary liquidation.
Following the transaction, Wang’s direct ownership stands at 793,634 shares, meaning the sale reduced his stake by less than 1%. No derivative transactions or additional equity awards were reported in Table II. The filing was signed by an attorney-in-fact on 06/20/2025 and reflects a single-person filing.
From an investment-impact standpoint, the transaction is small relative to Wang’s remaining holdings and does not, by itself, signal a strategic shift or fundamental change at Ambarella. Nevertheless, investors often monitor Form 4 filings for sentiment cues; repeated or larger-scale sales could draw more attention, but this isolated, tax-related sale is likely immaterial to the company’s valuation.
FAQ
What is the current stock price of Ambarella (AMBA)?
What is the market cap of Ambarella (AMBA)?
