Kang Sun
CIK: 0001476220
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
Amprius Technologies, Inc.
Discretionary Trading P&L
Holdings
Transaction History (38 total)
- Aug 21, 2026AMPX
Amprius Technologies, Inc.
Sale(S)Direct62.1K shares at avg. $10.34$642K - May 27, 2026AMPX
Amprius Technologies, Inc.
Sale(S)Direct356 shares at avg. $17.19$6K - May 21, 2026AMPX
Amprius Technologies, Inc.
Sale(S)Direct67.8K shares at avg. $14.79$1.0M - May 5, 2026AMPX
Amprius Technologies, Inc.
Award(A)Direct6.3K shares- - Apr 1, 2026AMPX
Amprius Technologies, Inc.
Exercise(M)Direct187.5K shares at avg. $3.68$690K - Apr 1, 2026AMPX
Amprius Technologies, Inc.
Exercise(M)Direct1.3M shares at avg. $1.78$2.3M - Apr 1, 2026AMPX
Amprius Technologies, Inc.
Sale(S)Direct249K shares at avg. $16.78$4.2M - Apr 1, 2026AMPX
Amprius Technologies, Inc.
Sale(S)Direct1.3M shares at avg. $15.73$19.7M - Mar 23, 2026AMPX
Amprius Technologies, Inc.
Sale(S)Indirect152.8K shares at avg. $18.69$2.9M - Mar 23, 2026AMPX
Amprius Technologies, Inc.
Sale(S)Indirect65K shares at avg. $19.06$1.2M - Feb 23, 2026AMPX
Amprius Technologies, Inc.
Sale(S)Direct61.3K shares at avg. $10.16$622K - Jan 20, 2026AMPX
Amprius Technologies, Inc.
Sale(S)Direct43.2K shares at avg. $11.03$476K - Jan 20, 2026AMPX
Amprius Technologies, Inc.
Exercise(M)Direct43.2K shares at avg. $1.78$77K - Jan 16, 2026AMPX
Amprius Technologies, Inc.
Exercise(M)Direct850.3K shares at avg. $2.50$2.1M - Jan 16, 2026AMPX
Amprius Technologies, Inc.
Exercise(M)Direct100.2K shares at avg. $1.78$178K - Jan 16, 2026AMPX
Amprius Technologies, Inc.
Sale(S)Direct950.5K shares at avg. $11.07$10.5M - Jan 12, 2026AMPX
Amprius Technologies, Inc.
Exercise(M)Direct208.3K shares at avg. $2.44$508K - Jan 12, 2026AMPX
Amprius Technologies, Inc.
Exercise(M)Direct117.2K shares at avg. $2.50$293K - Jan 12, 2026AMPX
Amprius Technologies, Inc.
Sale(S)Direct506.3K shares at avg. $10.10$5.1M - Jan 12, 2026AMPX
Amprius Technologies, Inc.
Exercise(M)Direct180.8K shares at avg. $0.62$112K - Nov 21, 2025AMPX
Amprius Technologies, Inc.
Sale(S)Direct68.7K shares at avg. $10.08$692K - Nov 17, 2025AMPX
Amprius Technologies, Inc.
Exercise(M)Direct202.9K shares at avg. $0.98$199K - Nov 17, 2025AMPX
Amprius Technologies, Inc.
Exercise(M)Direct728K shares at avg. $0.05$36K - Nov 17, 2025AMPX
Amprius Technologies, Inc.
Exercise(M)Direct27.5K shares at avg. $0.62$17K - Nov 17, 2025AMPX
Amprius Technologies, Inc.
Exercise(M)Direct41.7K shares at avg. $0.62$26K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Aug 21, 2026 | AMPX Amprius Technologies, Inc. | Sale(S) | 62,101 | $10.34 | $642,186 | Direct |
| May 27, 2026 | AMPX Amprius Technologies, Inc. | Sale(S) | 356 | $17.19 | $6,121 | Direct |
| May 21, 2026 | AMPX Amprius Technologies, Inc. | Sale(S) | 67,796 | $14.79 | $1,002,594 | Direct |
| May 5, 2026 | AMPX Amprius Technologies, Inc. | Award(A) | 6,250 | - | $0 | Direct |
| Apr 1, 2026 | AMPX Amprius Technologies, Inc. | Exercise(M) | 187,495 | $3.68 | $689,982 | Direct |
| Apr 1, 2026 | AMPX Amprius Technologies, Inc. | Exercise(M) | 1,312,505 | $1.78 | $2,336,259 | Direct |
| Apr 1, 2026 | AMPX Amprius Technologies, Inc. | Sale(S) | 249,037 | $16.78 | $4,179,563 | Direct |
| Apr 1, 2026 | AMPX Amprius Technologies, Inc. | Sale(S) | 1,250,963 | $15.73 | $19,681,151 | Direct |
| Mar 23, 2026 | AMPX Amprius Technologies, Inc. | Sale(S) | 152,823 | $18.69 | $2,855,696 | Indirect |
| Mar 23, 2026 | AMPX Amprius Technologies, Inc. | Sale(S) | 65,046 | $19.06 | $1,239,705 | Indirect |
| Feb 23, 2026 | AMPX Amprius Technologies, Inc. | Sale(S) | 61,251 | $10.16 | $622,035 | Direct |
| Jan 20, 2026 | AMPX Amprius Technologies, Inc. | Sale(S) | 43,185 | $11.03 | $476,274 | Direct |
| Jan 20, 2026 | AMPX Amprius Technologies, Inc. | Exercise(M) | 43,185 | $1.78 | $76,869 | Direct |
| Jan 16, 2026 | AMPX Amprius Technologies, Inc. | Exercise(M) | 850,338 | $2.50 | $2,125,845 | Direct |
| Jan 16, 2026 | AMPX Amprius Technologies, Inc. | Exercise(M) | 100,210 | $1.78 | $178,374 | Direct |
| Jan 16, 2026 | AMPX Amprius Technologies, Inc. | Sale(S) | 950,548 | $11.07 | $10,518,669 | Direct |
| Jan 12, 2026 | AMPX Amprius Technologies, Inc. | Exercise(M) | 208,264 | $2.44 | $508,164 | Direct |
| Jan 12, 2026 | AMPX Amprius Technologies, Inc. | Exercise(M) | 117,201 | $2.50 | $293,003 | Direct |
| Jan 12, 2026 | AMPX Amprius Technologies, Inc. | Sale(S) | 506,267 | $10.10 | $5,111,474 | Direct |
| Jan 12, 2026 | AMPX Amprius Technologies, Inc. | Exercise(M) | 180,802 | $0.62 | $112,097 | Direct |
| Nov 21, 2025 | AMPX Amprius Technologies, Inc. | Sale(S) | 68,655 | $10.08 | $692,132 | Direct |
| Nov 17, 2025 | AMPX Amprius Technologies, Inc. | Exercise(M) | 202,934 | $0.98 | $198,875 | Direct |
| Nov 17, 2025 | AMPX Amprius Technologies, Inc. | Exercise(M) | 727,950 | $0.05 | $36,398 | Direct |
| Nov 17, 2025 | AMPX Amprius Technologies, Inc. | Exercise(M) | 27,463 | $0.62 | $17,027 | Direct |
| Nov 17, 2025 | AMPX Amprius Technologies, Inc. | Exercise(M) | 41,653 | $0.62 | $25,825 | Direct |
1-25 of 38 transactions
About Sun Kang
Sun Kang (SEC CIK 0001476220) files insider reports with the SEC as Director of Amprius Technologies, Inc. (AMPX).
Signal8 holds 17 ownership filings by Sun Kang, all Form 4s, filed between Oct 25, 2024 and Aug 25, 2026. Those filings report 38 transactions, from Oct 23, 2024 to Aug 21, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Sun Kang's filings is in FREMONT, CA.
Recent filings by Sun Kang
- Aug 21, 2026: Open-market sale of AMPX shares (Form 4, code S).
- May 27, 2026: Open-market sale of AMPX shares (Form 4, code S).
- May 21, 2026: Open-market sale of AMPX shares (Form 4, code S).
- May 5, 2026: Grant or award of AMPX shares (Form 4, code A).
- Apr 1, 2026: Option exercises of AMPX shares (2 lines, Form 4, code M).
Other insiders filing for Amprius Technologies, Inc. (AMPX)
- Stefan Constantin Ionel, Chief Technology Officer
- Stepien Thomas M, Chief Executive Officer
- BAYLESS KATHLEEN A, Director
- SATTERTHWAITE LIVINGSTON, Director
- DIXON DONALD R, Director
- Chu Steven, Director