Form 4 Tracker
Sun Kang

Director · 8 filings · Latest: Aug 21, 2026

Amprius Technologies, Inc.
TickerOwnerRelationshipDateTransactionCost#SharesValue ($)#Shares TotalSEC Filing
AMPX
Sun KangDirectorAug 21, 2026
Sale
$10.3462,101$642.2K1,218,397
AMPX
KANG SUN—Aug 21, 2026
Proposed Sale
$10.3462,101$642.2K—
AMPX
Sun KangDirectorMay 27, 2026
Sale
$17.19356$6.1K1,280,498
AMPX
KANG SUN—May 27, 2026
Proposed Sale
$17.19356$6.1K—
AMPX
Sun KangDirectorMay 21, 2026
Sale
$14.7967,796$1.0M1,280,854
AMPX
KANG SUN—May 21, 2026
Proposed Sale
$14.7967,796$1.0M—
AMPX
Sun KangDirectorApr 1, 2026
Sale
$15.911,500,000$23.9M1,342,400
AMPX
Sun KangDirectorApr 1, 2026
Option Exercise
$2.021,500,000$3.0M2,842,400
AMPX
KANG SUN—Apr 1, 2026
Proposed Sale
$16.861,500,000$25.3M—
AMPX
Sun KangDirectorMar 23, 2026
Sale
$18.80217,869$4.1M56,406
AMPX
KANG SUN—Mar 23, 2026
Proposed Sale
$18.20192,727$3.5M—
AMPX
Sun KangDirectorFeb 23, 2026
Sale
$10.1661,251$622.0K1,342,400
AMPX
KANG SUN—Feb 23, 2026
Proposed Sale
$10.1661,251$622.0K—
AMPX
Sun KangDirectorJan 20, 2026
Sale
$11.0343,185$476.3K1,403,651
AMPX
Sun KangDirectorJan 20, 2026
Option Exercise
$1.7843,185$76.9K1,446,836
AMPX
Sun KangDirectorJan 16, 2026
Sale
$11.07950,548$10.5M1,403,651
AMPX
Sun KangDirectorJan 16, 2026
Option Exercise
$2.42950,548$2.3M2,354,199
AMPX
KANG SUN—Jan 16, 2026
Proposed Sale
$10.151,018,875$10.3M—
AMPX
KANG SUN—Jan 12, 2026
Proposed Sale
$9.48506,267$4.8M—
AMPX
Kang Sun—Nov 21, 2025
Proposed Sale
$10.0868,655$692.1K—

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