Sun Kang — SEC Form 4 filings
SEC reporting owner CIK 1476220. 20 Form 4 filings on record with FilingPulse; latest filed 2026-08-25.
Transaction summary — filings shown
Covers all 20 filings on record, filed 2024-03-19 to 2026-08-25. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 20 legs across 16 filings — 4,750,517 shares, $58,496,479 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 34.
- Largest priced transaction: sale of 1,250,963 shares @ $15.73 ($19,681,151) in Amprius Technologies, Inc., filed 2026-04-02.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| Amprius Technologies, Inc. (AMPX) | Director | 20 | — | 20 legs · 4,750,517 sh · $58,496,479 | 34 |
Form 4 filings — Sun Kang
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-25 | 4 | Amprius Technologies, Inc. (AMPX) | Sale (S): 62,101 @ $10.34 | EDGAR |
| 2026-05-28 | 4 | Amprius Technologies, Inc. (AMPX) | Sale (S): 356 @ $17.19 | EDGAR |
| 2026-05-26 | 4 | Amprius Technologies, Inc. (AMPX) | Sale (S): 67,796 @ $14.79 | EDGAR |
| 2026-05-07 | 4 | Amprius Technologies, Inc. (AMPX) | Grant/award (A): 6,250 @ $0 | EDGAR |
| 2026-04-02 | 4 | Amprius Technologies, Inc. (AMPX) | Option exercise (M): 1,312,505 @ $1.78 · Option exercise (M): 187,495 @ $3.68 · Sale (S): 1,250,963 @ $15.73 · Sale (S): 249,037 @ $16.78 · Option exercise (M): 1,312,505 (derivative) @ $1.78 · Option exercise (M): 187,495 (derivative) @ $3.68 | EDGAR |
| 2026-03-24 | 4 | Amprius Technologies, Inc. (AMPX) | Sale (S): 152,823 @ $18.69 · Sale (S): 65,046 @ $19.06 | EDGAR |
| 2026-02-24 | 4 | Amprius Technologies, Inc. (AMPX) | Sale (S): 61,251 @ $10.16 | EDGAR |
| 2026-01-20 | 4 | Amprius Technologies, Inc. (AMPX) | Option exercise (M): 850,338 @ $2.50 · Option exercise (M): 100,210 @ $1.78 · Sale (S): 950,548 @ $11.07 · Option exercise (M): 43,185 @ $1.78 · Sale (S): 43,185 @ $11.03 · Option exercise (M): 850,338 (derivative) @ $0 · +2 more | EDGAR |
| 2026-01-14 | 4 | Amprius Technologies, Inc. (AMPX) | Option exercise (M): 180,802 @ $0.62 · Option exercise (M): 208,264 @ $2.44 · Option exercise (M): 117,201 @ $2.50 · Sale (S): 506,267 @ $10.10 · Option exercise (M): 180,802 (derivative) @ $0 · Option exercise (M): 208,264 (derivative) @ $0 · +1 more | EDGAR |
| 2025-11-25 | 4 | Amprius Technologies, Inc. (AMPX) | Sale (S): 68,655 @ $10.08 | EDGAR |
| 2025-11-19 | 4 | Amprius Technologies, Inc. (AMPX) | Option exercise (M): 202,934 @ $0.98 · Option exercise (M): 727,950 @ $0.05 · Option exercise (M): 27,463 @ $0.62 · Option exercise (M): 41,653 @ $0.62 · Sale (S): 1,000,000 @ $10.60 · Option exercise (M): 202,934 (derivative) @ $0 · +3 more | EDGAR |
| 2025-08-25 | 4 | Amprius Technologies, Inc. (AMPX) | Sale (S): 65,654 @ $6.82 | EDGAR |
| 2025-05-23 | 4 | Amprius Technologies, Inc. (AMPX) | Sale (S): 69,786 @ $2.43 | EDGAR |
| 2025-03-21 | 4 | Amprius Technologies, Inc. (AMPX) | Grant/award (A): 599,400 @ $0 | EDGAR |
| 2025-02-24 | 4 | Amprius Technologies, Inc. (AMPX) | Sale (S): 34,353 @ $3.13 | EDGAR |
| 2024-11-22 | 4 | Amprius Technologies, Inc. (AMPX) | Sale (S): 33,779 @ $1.96 | EDGAR |
| 2024-10-25 | 4 | Amprius Technologies, Inc. (AMPX) | Grant/award (A): 208,265 (derivative) · Grant/award (A): 208,264 (derivative) · Grant/award (A): 41,653 (derivative) · Grant/award (A): 202,934 (derivative) · Grant/award (A): 1,171,476 (derivative) · Grant/award (A): 1,974,502 (derivative) · +1 more | EDGAR |
| 2024-08-22 | 4 | Amprius Technologies, Inc. (AMPX) | Sale (S): 33,333 @ $1.04 | EDGAR |
| 2024-05-24 | 4 | Amprius Technologies, Inc. (AMPX) | Sale (S): 19,973 @ $1.33 · Sale (S): 15,611 @ $1.36 | EDGAR |
| 2024-03-19 | 4 | Amprius Technologies, Inc. (AMPX) | Grant/award (A): 1,419,670 @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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