Kang Sun insider trades: Amprius Technologies (AMPX) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Kang reports to the SEC
Open-market buys and sales
16 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Aug 21, 2026 | AMPX | ↓ Sell | 62,101 | $10.34 | $642K | Direct | Aug 25, 2026 (4d) |
| May 27, 2026 | AMPX | ↓ Sell | 356 | $17.19 | $6K | Direct | May 28, 2026 (1d) |
| May 21, 2026 | AMPX | ↓ Sell | 67,796 | $14.79 | $1.0M | Direct | May 26, 2026 (5d) |
| Apr 1, 2026 | AMPX | ↓ Sell | 1,500,000 | $15.91 | $23.9M | Direct | Apr 2, 2026 (1d) |
| Mar 23, 2026 | AMPX | ↓ Sell | 217,869 | $18.80 | $4.1M | Indirect | Mar 24, 2026 (1d) |
| Feb 23, 2026 | AMPX | ↓ Sell | 61,251 | $10.16 | $622K | Direct | Feb 24, 2026 (1d) |
| Jan 20, 2026 | AMPX | ↓ Sell | 993,733 | $11.06 | $11.0M | Direct | Jan 20, 2026 (0d) |
| Jan 12, 2026 | AMPX | ↓ Sell | 506,267 | $10.10 | $5.1M | Direct | Jan 14, 2026 (2d) |
| Nov 21, 2025 | AMPX | ↓ Sell | 68,655 | $10.08 | $692K | Direct | Nov 25, 2025 (4d) |
| Nov 17, 2025 | AMPX | ↓ Sell | 1,000,000 | $10.60 | $10.6M | Direct | Nov 19, 2025 (2d) |
| Aug 21, 2025 | AMPX | ↓ Sell | 65,654 | $6.82 | $448K | Direct | Aug 25, 2025 (4d) |
| May 21, 2025 | AMPX | ↓ Sell | 69,786 | $2.43 | $170K | Direct | May 23, 2025 (2d) |
| Feb 21, 2025 | AMPX | ↓ Sell | 34,353 | $3.13 | $108K | Direct | Feb 24, 2025 (3d) |
| Nov 21, 2024 | AMPX | ↓ Sell | 33,779 | $1.96 | $66K | Direct | Nov 22, 2024 (1d) |
| Aug 21, 2024 | AMPX | ↓ Sell | 33,333 | $1.04 | $35K | Direct | Aug 22, 2024 (1d) |
| May 22, 2024 | AMPX | ↓ Sell | 35,584 | $1.34 | $48K | Direct | May 24, 2024 (2d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other AMPX insiders
Open-market trades in the last 12 months
About Kang Sun's insider trades
Kang Sun is a director at Amprius Technologies (AMPX). Since May 22, 2024, Kang has reported no open-market purchases and 16 sales worth $58.5M on SEC Form 4. In the last 12 months: 10 sales ($57.6M).
Their filings also include grants and awards (8 filings), option exercises (4 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every AMPX insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.