Form 4: Amprius Technologies CEO Sells Shares to Cover Tax Obligations from RSU Vesting

Amprius Technologies, Inc. CEO Kang Sun sold 69,786 shares of common stock for an average price of $2.432 per share to satisfy tax withholding obligations related to the vesting of restricted stock units.

Summary

• Kang Sun, who serves as both Director and Chief Executive Officer of Amprius Technologies, Inc. (AMPX), reported a transaction involving the company's common stock.
• On May 21, 2025, Mr. Sun disposed of 69,786 shares of Amprius Technologies common stock.
• The shares were sold at an average execution price of $2.432 per share, with individual transaction prices ranging from $2.40 to $2.48, inclusive.
• This sale was conducted as a non-discretionary 'sell-to-cover' arrangement, which was mandated by the issuer to fund tax withholding obligations incurred from the vesting of restricted stock units.
• Following this reported transaction, Kang Sun beneficially owns 1,812,235 shares of Amprius Technologies common stock, a figure that includes 1,537,960 restricted stock units.

Sentiment

Score: 6

Explanation: The sentiment is neutral to slightly positive because the sale of shares by CEO Kang Sun is clearly identified as a non-discretionary 'sell-to-cover' transaction for tax purposes related to RSU vesting. This clarifies that the sale is a routine administrative event rather than a voluntary divestment signaling a lack of confidence in the company's prospects.

Positives

• The transaction was explicitly stated as a non-discretionary 'sell-to-cover' arrangement, indicating it was a routine event for tax purposes rather than a voluntary sale based on a negative outlook for the company.

Negatives

• The transaction resulted in a reduction of direct insider ownership by 69,786 shares, even though it was for tax purposes.

Management Comments

• "This 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 $2.40 to $2.48, inclusive."

Stakeholder Impact

• Shareholders: The impact on shareholders is minimal as the sale is routine and non-discretionary, not signaling a lack of confidence from the CEO. It represents a very minor dilution of outstanding shares.
• Employees: No direct impact on employees is mentioned in this filing.

Key Dates

Keywords

Amprius Technologies, AMPX, Kang Sun, Form 4, insider transaction, stock sale, sell-to-cover, restricted stock units, RSU vesting, beneficial ownership, CEO, director, SEC filing