| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Director | Chief Executive Officer | See Remarks
1 company
Kang Sun is Director at AMPX. From March 2024 to August 2026, the filings on record show 0 open-market purchases and 16 sales. Kang Sun's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $10.8M at current prices.
Our model assigns Kang Sun a below-average insider score of 33/100, based on 17 past trades. Over a 12-month horizon, none of those trades were profitable, with an average 12-month return of -86.7%.
The AMPX filings lean toward selling, a net 4,750,517 shares.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Aug 21, 2025 | AMPX Amprius Technologies, Inc. | Chief Executive Officer | Sell | 65,654 | $6.82 | $447,510.79 | -4.3% | +59.2% | +52.3% | |
| May 21, 2025 | AMPX Amprius Technologies, Inc. | Chief Executive Officer | Sell | 69,786 | $2.43 | $169,719.55 | -3.7% | +178.5% | +532.2% | |
| Feb 21, 2025 | AMPX Amprius Technologies, Inc. | Chief Executive Officer | Sell | 34,353 | $3.13 | $107,634.82 | -2.6% | -16.0% | +217.3% | |
| Nov 21, 2024 | AMPX Amprius Technologies, Inc. | Chief Executive Officer | Sell | 33,779 | $1.96 | $66,362.22 | -2.5% | +69.7% | +410.6% | |
| Aug 21, 2024 | AMPX Amprius Technologies, Inc. | Chief Executive Officer | Sell | 33,333 | $1.04 | $34,666.32 | -2.4% | +91.7% | +528.7% | |
| May 22, 2024 | AMPX Amprius Technologies, Inc. | See Remarks | Sell | 35,584 | $1.34 | $47,684.67 | -2.5% | -26.7% | +72.6% |