AMPX Insider Filing: Sun Kang Sells Shares, 1.41M RSUs Outstanding
Rhea-AI Filing Summary
Amprius Technologies insider filing: The Form 4 reports that Sun Kang, CEO and director of Amprius Technologies (AMPX), sold 65,654 shares on 08/21/2025 under the issuer's non-discretionary sell-to-cover arrangements to fund tax withholding, at an average execution price of $6.8162 per share (individual trade prices ranged $6.78–$6.91). After the sale, Mr. Kang directly beneficially owns 1,472,306 shares, which include 1,411,769 restricted stock units that convert to common shares subject to vesting. Separately, on 06/10/2025 he transferred 274,275 directly held shares to the Kang & Cecillia Sun Family Revocable Trust, which now holds those shares.
Positive
- Transparency: Filing discloses average execution price and price range for the sell-to-cover transactions
- Substantial incentive alignment: 1,411,769 restricted stock units remain outstanding, maintaining future equity alignment with shareholders
Negative
- Reduction in direct holdings: Sale of 65,654 shares reduced the reporting person’s direct share count
- Potential dilution: Large outstanding RSU pool (1,411,769) will convert to shares subject to vesting, which may dilute existing shareholders upon vesting
Insights
TL;DR: Insider sold shares to cover taxes and moved holdings to a family trust; no evidence of discretionary insider trading.
The filing documents a routine sell-to-cover transaction tied to RSU vesting, a common practice to satisfy tax obligations. The transfer of 274,275 shares to a revocable family trust indicates estate planning rather than a change in control. The large number of unvested RSUs (1,411,769) keeps significant potential alignment with shareholders. No derivative transactions or pledges are reported.
TL;DR: Transaction size is modest relative to total reported beneficial ownership; transaction appears administratively driven.
The 65,654-share sale at an average $6.8162 reduces direct holdings but represents a small portion of total reported beneficial exposure when including 1,411,769 RSUs. The reported price range and disclosure that shares were sold in multiple transactions provide transparency on execution. Investors should note concentration of compensation in RSUs, which can cause future dilution upon vesting, but no immediate material financing or debt-related activity is disclosed.
Insider Trade Summary
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Common stock | 65,654 | $6.8162 | $448K |
| holding | Common stock | -- | -- | -- |
Footnotes (1)
- 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 $6.78 to $6.91, 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. Includes 1,411,769 restricted stock units, each of which represents a contingent right to receive one share of the issuer's common stock, subject to the applicable vesting schedule and conditions of each restricted stock unit. On June 10, 2025, the reporting person transferred 274,275 shares of the issuer's common stock, which were previously held directly by the reporting person, to the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, for which the reporting person and his spouse are co-trustees. These securities are held directly by the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, for which the reporting person and his spouse are co-trustees.
