Stepien Thomas M
SEC insider (Form 3/4/5 filer). CIK 0002067233. Chief Executive Officer at Amprius Technologies, Inc. (AMPX). 17 reported Form 4/5 transactions since Sep 2024; latest on Aug 25, 2026. Located in FREMONT, CA.
Companies Stepien Thomas M has filed insider reports for
- Amprius Technologies, Inc. (AMPX): Director, Officer, Chief Executive Officer
Stepien Thomas M
CIK: 0002067233
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 (17 total)
- Aug 25, 2026AMPX
Amprius Technologies, Inc.
GiftDirect5K shares- - Aug 25, 2026AMPX
Amprius Technologies, Inc.
AwardIndirect346 shares- - Aug 25, 2026AMPX
Amprius Technologies, Inc.
GiftDirect346 shares- - Aug 25, 2026AMPX
Amprius Technologies, Inc.
GiftDirect5K shares- - Aug 25, 2026AMPX
Amprius Technologies, Inc.
GiftDirect5K shares- - Aug 24, 2026AMPX
Amprius Technologies, Inc.
SaleDirect8K shares at avg. $10.03$80K - Aug 21, 2026AMPX
Amprius Technologies, Inc.
SaleDirect23.5K shares at avg. $10.34$243K - Jun 4, 2026AMPX
Amprius Technologies, Inc.
SaleDirect2K shares at avg. $20.97$42K - Jun 4, 2026AMPX
Amprius Technologies, Inc.
GiftDirect30.4K shares- - Jun 4, 2026AMPX
Amprius Technologies, Inc.
GiftDirect36.9K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Aug 25, 2026 | AMPX Amprius Technologies, Inc. | Gift | 5,000 | - | $0 | Direct |
| Aug 25, 2026 | AMPX Amprius Technologies, Inc. | Award | 346 | - | $0 | Indirect |
| Aug 25, 2026 | AMPX Amprius Technologies, Inc. | Gift | 346 | - | $0 | Direct |
| Aug 25, 2026 | AMPX Amprius Technologies, Inc. | Gift | 5,000 | - | $0 | Direct |
| Aug 25, 2026 | AMPX Amprius Technologies, Inc. | Gift | 5,000 | - | $0 | Direct |
| Aug 24, 2026 | AMPX Amprius Technologies, Inc. | Sale | 8,000 | $10.03 | $80,240 | Direct |
| Aug 21, 2026 | AMPX Amprius Technologies, Inc. | Sale | 23,529 | $10.34 | $243,313 | Direct |
| Jun 4, 2026 | AMPX Amprius Technologies, Inc. | Sale | 2,000 | $20.97 | $41,940 | Direct |
| Jun 4, 2026 | AMPX Amprius Technologies, Inc. | Gift | 30,384 | - | $0 | Direct |
| Jun 4, 2026 | AMPX Amprius Technologies, Inc. | Gift | 36,914 | - | $0 | Direct |
1-10 of 17 transactions