Form 4: Amprius Director Sells Shares for Tax Obligations

Amprius Technologies Director Kang Sun sold 61,251 shares of common stock to cover tax withholding obligations related to restricted stock unit vesting.

Summary

• Amprius Technologies Director Kang Sun sold 61,251 shares of common stock on February 23, 2026.
• The shares were sold at an average price of $10.1555, with individual transaction prices ranging from $9.96 to $10.35.
• This transaction was a non-discretionary, sell-to-cover arrangement mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units.
• Following the transaction, Kang Sun directly beneficially owns 1,342,400 shares, which includes 1,159,385 restricted stock units.
• An additional 274,275 shares are indirectly beneficially owned through the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this transaction as neutral because it is a non-discretionary sale for tax purposes, which is a standard event for equity compensation and does not reflect a change in the director's investment sentiment.

Positives

• The transaction was non-discretionary, indicating it was not a voluntary sale based on a negative outlook for the company.
• The sale was for a specific, common purpose: covering tax obligations arising from the vesting of restricted stock units.

Negatives

• A reduction in direct beneficial ownership, even if for tax purposes, slightly decreases the director's direct stake in the company.

Future Outlook

NA

Industry Context

StockSavvy.ai notes that sell-to-cover transactions for tax obligations are a routine occurrence for executives and directors receiving equity compensation, and typically do not signal a change in management's outlook on the company's prospects. This is a standard mechanism for managing tax liabilities associated with vesting equity.

Comparison to Industry Standards

• StockSavvy.ai observes that sell-to-cover transactions are a common practice across all industries for executives and directors receiving equity compensation.
• Similar tax-related sales are frequently seen at tech companies like Apple (AAPL) or Microsoft (MSFT) when executives' restricted stock units vest.
• The percentage of shares sold relative to total holdings for tax purposes is generally consistent with industry norms, reflecting the tax burden on equity compensation rather than a strategic divestment.

Stakeholder Impact

• Shareholders: Minimal direct impact as it is a non-discretionary tax-related sale, not a signal of lack of confidence in the company's future.
• Employees: No direct impact.
• Customers: No direct impact.
• Suppliers: No direct impact.
• Creditors: No direct impact.

Key Dates

Recommendation

This Form 4 filing details a routine, non-discretionary sale by a director to cover tax obligations associated with restricted stock unit vesting. Such transactions are common and do not typically indicate a change in the director's long-term view of the company's prospects. Therefore, based solely on this filing, there is no new information to warrant a change from a 'hold' position, assuming the investor's prior assessment of the company's fundamentals remains unchanged.

Keywords

Amprius Technologies, AMPX, Kang Sun, Form 4, Insider Transaction, Stock Sale, Restricted Stock Units, Tax Withholding, Director