Kang Sun
CIK 1476220 · Chief Executive Officer · last filed 2026-05-28
Kang Sun is a Chief Executive Officer who has filed 23 SEC Form 4 insider transactions across 2 companies since 2010. The most recent filing shows the insider sold $6.1K of AMPX.WS on May 28, 2026. Across all open-market trades the lifetime net is −$57.9M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $9.5M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$9.49M
2
23
-$57.85M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| AMPX.WS | Director | 1,336,904 | $7.10 | $9.49M | -$57.85M | 19 | 2026-05-28 |
| DAYSTAR TECHNOLOGIES INC (DSTI) Delisted | Director | 86,112 | — | — | $0 | 3 | 2012-03-29 |
Recent Filings
23 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-28 | AMPX.WS | Sell (S) | −356 | -$6.1K | EDGAR |
| 2026-05-26 | AMPX.WS | Sell (S) | −67,796 | -$1.00M | EDGAR |
| 2026-05-07 | AMPX.WS | Grant (A) | +6,250 | $0 | EDGAR |
| 2026-04-02 | AMPX.WS | Mixed | — | -$20.83M | EDGAR |
| 2026-03-24 | AMPX.WS | Sell (S) | −217,869 | -$4.10M | EDGAR |
| 2026-02-24 | AMPX.WS | Sell (S) | −61,251 | -$622.0K | EDGAR |
| 2026-01-20 | AMPX.WS | Mixed | — | -$8.61M | EDGAR |
| 2026-01-14 | AMPX.WS | Mixed | — | -$4.20M | EDGAR |
| 2025-11-25 | AMPX.WS | Sell (S) | −68,655 | -$692.1K | EDGAR |
| 2025-11-19 | AMPX.WS | Mixed | — | -$10.32M | EDGAR |