Who
Thomas M. Stepien
Chief Executive Officer
Company insider
Files Form 4 as: Chief Executive Officer, Amprius Technologies.
In numbers
- Trades disclosed
- 32
- Buys
- 0
- Sells
- 5
- Bought
- $0
- Sold
- $2.7M
- Companies
- 1
- Companies where not an officer
- 0
- First trade
- 1 May 2025
- Last trade
- 25 Aug 2026
- Last filed
- 25 Aug 2026
Companies traded
Activity over time
1 May – 1 Oct
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 25 Aug 2026filed 25 Aug 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code G | —5,000 at $0.00 | filing |
| 25 Aug 2026filed 25 Aug 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code G | —5,000 at $0.00 | filing |
| 25 Aug 2026filed 25 Aug 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code G | —5,000 at $0.00 | filing |
| 25 Aug 2026filed 25 Aug 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code G | —346 at $0.00 | filing |
| 25 Aug 2026filed 25 Aug 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code A | —346 at $0.00 | filing |
| 25 Aug 2026filed 25 Aug 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code G | —5,000 at $0.00 | filing |
| 25 Aug 2026filed 25 Aug 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code G | —5,000 at $0.00 | filing |
| 25 Aug 2026filed 25 Aug 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code G | —5,000 at $0.00 | filing |
| 25 Aug 2026filed 25 Aug 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code G | —346 at $0.00 | filing |
| 25 Aug 2026filed 25 Aug 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code A | —346 at $0.00 | filing |
| 24 Aug 2026filed 25 Aug 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Sold | $80K8,000 at $10.03 | filing |
| 24 Aug 2026filed 25 Aug 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Sold | $80K8,000 at $10.03 | filing |
| 21 Aug 2026filed 25 Aug 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Sold | $243K23,529 at $10.34 | filing |
| 21 Aug 2026filed 25 Aug 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Sold | $243K23,529 at $10.34 | filing |
| 4 Jun 2026filed 5 Jun 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code G | —30,384 at $0.00 | filing |
| 4 Jun 2026filed 5 Jun 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code G | —36,914 at $0.00 | filing |
| 4 Jun 2026filed 5 Jun 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code G | —36,914 at $0.00 | filing |
| 4 Jun 2026filed 5 Jun 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Sold | $42K2,000 at $20.97 | filing |
| 4 Jun 2026filed 5 Jun 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code G | —30,384 at $0.00 | filing |
| 4 Jun 2026filed 5 Jun 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code G | —36,914 at $0.00 | filing |
News
No headline names them, or the companies they trade most, lately.