Form 4: Amprius Technologies Director Sells Shares

Amprius Technologies Director Sun Kang reported a transaction involving the sale of common stock to cover tax withholding obligations.

Summary

• Sun Kang, a Director at Amprius Technologies, Inc., reported a transaction on May 21, 2026.
• The transaction involved the sale of 67,796 shares of common stock.
• These shares were sold at an average price of $14.7884, with individual sales ranging from $14.54 to $15.08.
• The sale was executed under a pre-arranged sell-to-cover plan to fund tax withholding obligations related to the vesting of restricted stock units.
• Following this transaction, Sun Kang directly beneficially owns 1,280,854 shares of common stock.
• This direct holding includes 1,039,443 restricted stock units.
• Additionally, 56,406 shares are held indirectly by the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, where Sun Kang and his spouse are co-trustees.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral filing, as the reported transaction is a standard insider sale for tax withholding purposes and not indicative of a change in the insider's fundamental view of the company's prospects.

Negatives

• A director sold a significant number of shares (67,796), which could be perceived negatively by the market, although it was for tax withholding purposes.

Risks

• The sale of shares by a director, even if for tax purposes, could signal a lack of confidence or create downward pressure on the stock price.
• The vesting of restricted stock units and subsequent tax withholding obligations indicate potential future share sales by insiders.

Future Outlook

The filing does not contain forward-looking statements or guidance regarding future financial performance or strategic plans.

Management Comments

• The transaction was effected pursuant to non-discretionary, sell-to-cover arrangements mandated by the issuer to fund tax withholding obligations in connection with the vesting of restricted stock units.
• The price reported in Column 4 is an average execution price. These shares were sold in multiple transactions at prices ranging from $14.54 to $15.08, inclusive.
• The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

Industry Context

StockSavvy.ai notes that insider selling, even for tax purposes, is a common event for executives and directors following the vesting of equity awards. The context of Amprius Technologies' business in advanced battery technology means that such transactions are closely watched by investors.

Stakeholder Impact

• Shareholders: May interpret the sale as a negative signal, potentially impacting share price, despite the stated reason.
• Management/Directors: The transaction is a routine part of compensation and tax management for equity awards.

Next Steps

• The reporting person will provide further details on share sales at specific prices upon request.
• Continued monitoring of insider transactions for any changes in beneficial ownership patterns.

Key Dates

Keywords

Amprius Technologies, AMPX, Form 4, Insider Transaction, Stock Sale, Director, Beneficial Ownership, Restricted Stock Units, Tax Withholding