Kang Sun Net Worth
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Kang Sun has an estimated net worth of at least $19.2 million*, as of Oct. 29, 2025. They own 1.4 million shares of AMPX stock. They have sold 1.3 million shares of AMPX stock since 2021, for an estimated $873,578.
Kang Sun $AMPX SEC Form 4 Insider Trading
Kang Sun has filed a total of 9 insider trades in $AMPX since 2021. Their most recent trade was a sale of 68,655 shares, made on Nov 21, 2025. Their largest trade was a sale of 1.0 million shares, made on Nov 17, 2025. We estimate that they now own 1.4 million shares of $AMPX, worth an estimated $18.3 million.
Insider Trading at $AMPX
There have been a total of 88 insider trades reported at $AMPX since 2021, with 0 shares purchased and 5.6 million shares sold. The most active insider traders in $AMPX stock have been Jonathan Bornstein, Constantin Ionel Stefan, and Kang Sun. The most recent trade was a sale of 25,024 shares reported by Constantin Ionel Stefan (Chief Technology Officer), made on Nov 21, 2025.
History of Insider Stock Trades by Kang Sun
| Company Ticker | Purchase / Sale | Shares | Date | Disclosed (EST) |
|---|---|---|---|---|
AMPX
|
Sale | 68,655 | Nov 21, 2025 | Nov. 25, 2025, 7:54 p.m. |
|
AMPX
|
Sale | 1.0 million | Nov 17, 2025 | Nov. 19, 2025, 6:49 p.m. |
|
AMPX
|
Sale | 65,654 | Aug 21, 2025 | Aug. 25, 2025, 7:59 p.m. |
|
AMPX
|
Sale | 69,786 | May 21, 2025 | May 23, 2025, 5:48 p.m. |
|
AMPX
|
Sale | 34,353 | Feb 21, 2025 | Feb. 24, 2025, 8:42 p.m. |
|
AMPX
|
Sale | 33,779 | Nov 21, 2024 | Nov. 22, 2024, 5:29 p.m. |
|
AMPX
|
Sale | 33,333 | Aug 21, 2024 | Aug. 22, 2024, 5:02 p.m. |
|
AMPX
|
Sale | 19,973 | May 21, 2024 | May 24, 2024, 9:06 p.m. |
|
AMPX
|
Sale | 15,611 | May 22, 2024 | May 24, 2024, 9:06 p.m. |
$AMPX Executives and Stock Owners with Insider Trades
-
Jonathan Bornstein, President of Amprius Lab
-
Constantin Ionel Stefan, Chief Technology Officer
-
Kang Sun, Chief Executive Officer
-
Sandra Wallach, Chief Financial Officer
-
Kang Sun, See Remarks
*This is only based off of information found in SEC filings, and may not reflect actual net worth. There may also be inaccuracies due to privately holdings filing errors, parsing errors, accidental double-counting of shares, incorrect classification of indirectly owned shares, sales prior to dataset start date, or any other number of issues.