Who
Steven Chu
Director
Company insider
Files Form 4 as: Director, Amprius Technologies; Director, Zymergen; Director, Nvidia.
In numbers
- Trades disclosed
- 35
- Buys
- 0
- Sells
- 2
- Bought
- $0
- Sold
- $11.7M
- Companies
- 3
- Companies where not an officer
- 3
- First trade
- 1 Aug 2006
- Last trade
- 12 Jun 2026
- Last filed
- 16 Jun 2026
Companies traded
Activity over time
1 Mar – 1 Oct
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 12 Jun 2026filed 16 Jun 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code A | —10,423 at $0.00 | filing |
| 12 Jun 2026filed 16 Jun 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code A | —10,423 at $0.00 | filing |
| 12 Mar 2026filed 12 Mar 2026 | AMPX Amprius Technologiesoption or derivative · Electronic Components & EMS | SEC FORM 4 Code M | $43K69,422 at $0.62 | filing |
| 12 Mar 2026filed 12 Mar 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code M | $225K86,143 at $2.61 | filing |
| 12 Mar 2026filed 12 Mar 2026 | AMPX Amprius Technologiesoption or derivative · Electronic Components & EMS | SEC FORM 4 Code M | $225K86,143 at $2.61 | filing |
| 12 Mar 2026filed 12 Mar 2026 | AMPX Amprius Technologiesoption or derivative · Electronic Components & EMS | SEC FORM 4 Code M | $43K69,422 at $0.62 | filing |
| 12 Mar 2026filed 12 Mar 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code M | $43K69,422 at $0.62 | filing |
| 12 Mar 2026filed 12 Mar 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Sold | $1.9M100,000 at $18.65 | filing |
| 12 Mar 2026filed 12 Mar 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Sold | $911K50,000 at $18.21 | filing |
| 12 Mar 2026filed 12 Mar 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Sold | $103K5,565 at $18.53 | filing |
| 12 Mar 2026filed 12 Mar 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code M | $225K86,143 at $2.61 | filing |
| 12 Mar 2026filed 12 Mar 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code M | $43K69,422 at $0.62 | filing |
| 12 Mar 2026filed 12 Mar 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Sold | $1.9M100,000 at $18.65 | filing |
| 12 Mar 2026filed 12 Mar 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Sold | $911K50,000 at $18.21 | filing |
| 12 Mar 2026filed 12 Mar 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Sold | $103K5,565 at $18.53 | filing |
| 12 Mar 2026filed 12 Mar 2026 | AMPX Amprius Technologiesoption or derivative · Electronic Components & EMS | SEC FORM 4 Code M | $225K86,143 at $2.61 | filing |
| 10 Mar 2026filed 12 Mar 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Code M | $65K104,132 at $0.62 | filing |
| 10 Mar 2026filed 12 Mar 2026 | AMPX Amprius TechnologiesElectronic Components & EMS | SEC FORM 4 Sold | $3.0M166,632 at $17.92 | filing |
| 10 Mar 2026filed 12 Mar 2026 | AMPX Amprius Technologiesoption or derivative · Electronic Components & EMS | SEC FORM 4 Code M | $65K104,132 at $0.62 | filing |
| 10 Mar 2026filed 12 Mar 2026 | AMPX Amprius Technologiesoption or derivative · Electronic Components & EMS | SEC FORM 4 Code M | $65K104,132 at $0.62 | filing |
News
No headline names them, or the companies they trade most, lately.