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.
The Ambarella, Inc. (NASDAQ: AMBA) SEC filings page on Stock Titan aggregates the company’s regulatory disclosures from the U.S. Securities and Exchange Commission, alongside AI-powered tools to help interpret them. Ambarella describes itself in these filings as a Cayman Islands company whose ordinary shares trade on the Nasdaq Global Select Market under the symbol AMBA, and as an edge AI semiconductor company focused on low-power systems-on-chip (SoCs) for edge AI and human vision applications.
Key filings for Ambarella include its annual reports on Form 10-K and quarterly reports on Form 10-Q, which provide detailed information on its business, risk factors, financial statements and edge AI strategy. Current reports on Form 8-K document material events such as the release of quarterly financial results and certain management changes. For example, recent 8-K filings reference the announcement of fiscal 2026 quarterly results and the voluntary resignation of the company’s Chief Technology Officer from that role and from the board, with a transition to a part-time Chief Technology Advisor position.
These filings also describe Ambarella’s use of non-GAAP financial measures, including non-GAAP gross margin and non-GAAP net income or loss, and provide reconciliations to the closest GAAP metrics. Risk disclosures in the filings discuss factors that could affect Ambarella’s performance, such as global economic conditions, customer adoption of products incorporating its SoCs, competition and the company’s ability to develop and monetize advanced AI and computer vision technologies.
On Stock Titan, investors can review Ambarella’s 10-K and 10-Q reports, 8-K current reports and related exhibits, with AI-generated summaries that highlight important sections and explain complex terminology. The platform also surfaces new filings in near real time as they appear on EDGAR, helping users track changes in Ambarella’s financial condition, governance and edge AI business disclosures without reading every page manually.
Ambarella, Inc. director Hsiao-Wuen Hon received an annual restricted stock unit (RSU) award of 2,498 ordinary shares, effective September 2, 2025. The filing shows the grant was approved by the Board and reported on Form 4, with 30,776 shares reported as beneficially owned by Mr. Hon after the award. The RSUs vest in four quarterly installments beginning September 15, 2025, with 1/4th of the shares vesting each three months and full vesting on September 15, 2026, subject to continued service. The Form 4 was signed by an attorney-in-fact on behalf of the reporting person.
Ambarella director David Jeffrey Richardson received an annual restricted stock unit (RSU) grant of 2,498 Ordinary Shares approved by the Board, effective September 2, 2025. The grant vests in four equal quarterly installments beginning September 15, 2025, and will be 100% vested on September 15, 2026, subject to continued service. The Form 4 shows 5,029 Ordinary Shares beneficially owned following the reported transaction and 23,281 shares held indirectly via a family trust. The reported grant price is listed as $0.0. The filing was signed on behalf of Mr. Richardson by an attorney-in-fact on September 4, 2025.
Christopher Paisley, a director of Ambarella, Inc. (AMBA), received an annual restricted stock unit (RSU) grant. The Board approved 2,498 RSUs on 09/02/2025. The RSUs vest in four equal quarterly installments beginning on a vesting start date of 09/15/2025 and are scheduled to be fully vested on 09/15/2026, subject to continued service. After the grant, Mr. Paisley beneficially owns 41,779 ordinary shares. The grant was reported on a Form 4 by an attorney-in-fact on behalf of Mr. Paisley.
Ambarella, Inc. director Chenming Hu received an annual restricted stock unit (RSU) grant of 2,498 ordinary shares. The grant was approved by the board effective September 2, 2025, and vests in four equal quarterly installments beginning on the vesting start date of September 15, 2025, reaching 100% vesting on September 15, 2026, subject to continued service. After the grant, Mr. Hu beneficially owns 29,516 ordinary shares. The Form 4 was signed on behalf of Mr. Hu by an attorney-in-fact on September 4, 2025.
Ambarella, Inc. reported stronger top-line performance for the quarter and first half of fiscal 2026 with revenue of $95.5 million and $181.4 million for the three and six months ended July 31, 2025, increases of 49.9% and 53.5% year-over-year driven by higher unit shipments, a greater mix of higher-priced AI inference processors and increased NRE services. Operating losses narrowed to $22.0 million and $47.8 million for the quarter and six months, benefiting from higher gross profit despite rising personnel and engineering costs. Cash flow from operations improved to $20.3 million for the six months versus $1.8 million a year earlier. The board extended a $50.0 million share repurchase program through June 30, 2026; $2.0 million of buybacks were completed with ~$48.0 million remaining.
Form 4 Filing Details - Ambarella (AMBA) Director Transaction
Director Christopher B. Paisley reported a sale of 1,000 ordinary shares at a price of $62.58 per share on June 25, 2025. The transaction was executed under a Rule 10b5-1 trading plan established on June 13, 2024, demonstrating pre-planned trading activity.
Following the transaction, Paisley retains direct beneficial ownership of 39,281 shares. Key transaction details:
- Transaction Type: Sale of non-derivative securities
- Total Transaction Value: $62,580
- Trading Plan: Executed under Rule 10b5-1
- Ownership: Direct ownership maintained
This insider sale represents approximately 2.5% of Paisley's holdings in Ambarella and was conducted in compliance with SEC regulations for insider trading.
Ambarella (NASDAQ:AMBA) filed a Form 144 on June 29 2025 detailing a proposed sale of 1,000 common shares by insider Christopher B. Paisley through Fidelity Brokerage Services. The shares are valued at roughly $62,580, a fraction (<0.01%) of the company’s 42.4 million shares outstanding.
The stock to be sold stems from restricted-stock awards that vested in 2016 (341 shares) and 2019 (659 shares). The notice indicates an expected sale date of June 25 2025 on Nasdaq. It also discloses that Paisley sold 500 shares for $27,750 on March 25 2025. No additional financial data, risk factors, or strategic developments are included in the filing.
Ambarella CFO John Alexander Young reported a sale of 2,435 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 (RSUs).
Following the reported transaction, Young continues to hold 111,451 shares directly. The Form 4 filing indicates this was a routine tax-related sale rather than a discretionary transaction, which is common practice among executives when RSUs vest.
The filing was submitted through Young's attorney-in-fact, Michael Morehead, on June 20, 2025. This transaction represents a relatively small adjustment to Young's overall holdings in Ambarella, maintaining significant direct ownership in the company while fulfilling tax obligations.
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