Form 4: Amprius Technologies Director Sells Shares for Tax

Director Kang Sun sold 356 shares of Amprius Technologies to cover tax obligations related to restricted stock unit vesting.

Summary

• Director Kang Sun disposed of 356 shares of common stock on May 27, 2026.
• The sale was executed at an average price of $17.1935 per share.
• The transaction was a non-discretionary sell-to-cover arrangement to satisfy tax withholding obligations.
• Following the transaction, the reporting person maintains direct ownership of 1,280,498 shares and indirect ownership of 56,406 shares.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event, as the transaction is a routine administrative action related to tax obligations rather than a discretionary market move.

Positives

• The sale was non-discretionary and specifically intended to cover tax liabilities, indicating it was not a signal of lack of confidence in the company.

Negatives

• Reduction in direct share ownership by the director.

Risks

• The reporting person holds 1,038,662 restricted stock units that are subject to future vesting conditions.

Future Outlook

No forward-looking guidance provided in this filing.

Industry Context

StockSavvy.ai notes that sell-to-cover transactions are standard corporate governance practices for executives and directors to manage tax liabilities upon the vesting of equity compensation, and generally do not reflect a change in strategic outlook.

Comparison to Industry Standards

• The use of non-discretionary sell-to-cover plans is a standard industry practice for publicly traded companies to ensure compliance with tax regulations during equity vesting cycles.

Related Party Transactions

• Securities are held by the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, for which the reporting person and his spouse are co-trustees.

Stakeholder Impact

• Minimal impact on shareholders as the sale was small and mandatory for tax purposes.

Next Steps

• Future vesting of the remaining 1,038,662 restricted stock units subject to company conditions.

Key Dates

Keywords

Amprius Technologies, AMPX, Insider Trading, Form 4, Director, Tax Withholding