Kang Sun sold $5.1M of AMPX
See Remarks at Amprius Technologies, Inc.. 506,267 shares at an average of $10.10, traded Jan 12, 2026, filed Jan 14, 2026.
Score components
- +15RoleDirector
- +25Trade size$5.1M at market
- +10Share of holdings soldSold 27% of holdings
- +8Cluster2 insiders selling within 14 days
- -15Exercise and sellShares came from an option exercise in the same filing
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m -3.8%, 3m +76.6%, 6m +9.5%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001476220-26-000003, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Jan 12, 2026 | MOption exercise Common stock10b5-1 | +180,802 | $0.62 | $112k | 1,584,453 | Jan 14, 2026 |
| Jan 12, 2026 | MOption exercise Common stock10b5-1 | +208,264 | $2.44 | $508k | 1,792,717 | Jan 14, 2026 |
| Jan 12, 2026 | MOption exercise Common stock10b5-1 | +117,201 | $2.50 | $293k | 1,909,918 | Jan 14, 2026 |
| Jan 12, 2026 | SOpen-market sale Common stock10b5-1 | -506,267 | $10.10 | $5.1M | 1,403,651 | Jan 14, 2026 |
| Jan 12, 2026 | MOption exercise Stock Option (right to buy)derivative10b5-1 | -180,802 | $0.00 | $0 | 0 | Jan 14, 2026 |
| Jan 12, 2026 | MOption exercise Stock Option (right to buy)derivative10b5-1 | -208,264 | $0.00 | $0 | 0 | Jan 14, 2026 |
| Jan 12, 2026 | MOption exercise Stock Option (right to buy)derivative10b5-1 | -117,201 | $0.00 | $0 | 850,338 | Jan 14, 2026 |
Related signals
Other insiders at Amprius Technologies, Inc. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 50Moderate | Amprius Technologies, Inc. | Kang Sun See Remarks | $642k 62,101 shares | -5% | |
| 44Moderate | Amprius Technologies, Inc. | Constantin Ionel Stefan Chief Technology Officer | $307k 29,681 shares | -4% | |
| 54Moderate | Amprius Technologies, Inc. | Thomas M Stepien Chief Executive Officer | $324k 31,529 shares | -5% | |
| 53Moderate | Amprius Technologies, Inc. | Donald R Dixon director | $1.5M 85,000 shares | -19% | |
| 52Moderate | Amprius Technologies, Inc. | Donald R Dixon director | $765k 40,000 shares | -8% | |
| 46Moderate | Amprius Technologies, Inc. | Thomas M Stepien Chief Executive Officer | $42k 2,000 shares | -0% | |
| 44Moderate | Amprius Technologies, Inc. | Donald R Dixon director | $320k 17,895 shares | -4% | |
| 30Weak | Amprius Technologies, Inc. | Kang Sun See Remarks | $6,121 356 shares | -0% | |
| 37Weak | Amprius Technologies, Inc. | Constantin Ionel Stefan Chief Technology Officer | $55k 3,208 shares | -0% | |
| 48Moderate | Amprius Technologies, Inc. | Thomas M Stepien Chief Executive Officer | $75k 4,375 shares | -1% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.