4/A: Ambarella Senior VP Sells Shares Under 10b5-1 Plan

Ambarella's Senior VP, Chi-Hong Ju, sold 7,945 ordinary shares at a weighted average price of $70.25 per share under a pre-arranged 10b5-1 plan.

Summary

• Chi-Hong Ju, Senior VP, Systems & GM, Asia of Ambarella Inc. (AMBA), reported a transaction.
• A total of 7,945 ordinary shares were disposed of (sold) on December 30, 2025.
• The shares were sold at a weighted average price of $70.25 per share, with prices ranging from $70.19 to $70.43.
• Following this transaction, Chi-Hong Ju directly beneficially owns 149,587 ordinary shares.
• The transaction was made pursuant to a contract, instruction, or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Sentiment

Score: 5

Explanation: The sentiment is neutral. While it's an insider sale, the explicit mention of a Rule 10b5-1 plan indicates a pre-scheduled transaction for personal financial management, rather than a reaction to new company-specific negative news. This mitigates the potential negative perception of an insider selling shares.

Positives

• The transaction was executed under a Rule 10b5-1 plan, indicating it was a pre-scheduled sale and not necessarily a reaction to new, potentially negative, information about the company.

Negatives

• A Senior VP reduced their direct beneficial ownership by selling 7,945 ordinary shares.

Future Outlook

No forward-looking statements or guidance are provided in this insider transaction report.

Industry Context

This filing reports a routine insider transaction and does not provide information related to broader industry trends or competitive landscape.

Stakeholder Impact

• Shareholders: A Senior VP sold 7,945 ordinary shares, reducing their direct beneficial ownership to 149,587 shares. The sale was executed under a Rule 10b5-1 plan, which suggests it was pre-scheduled and not based on new material non-public information, thus having a limited impact on shareholder perception.

Key Dates

Recommendation

The filing reports a pre-planned sale of shares by a Senior VP under a Rule 10b5-1 plan. Such transactions are generally not indicative of a change in the company's fundamental outlook and are often for personal financial planning. Therefore, it does not provide sufficient new information to alter an existing investment recommendation.

Keywords

Ambarella, AMBA, insider trading, Form 4, stock sale, executive compensation, beneficial ownership, 10b5-1 plan