Huang Chiao Chieh insider trades
Huang Chiao Chieh has filed 5 Form 4s with the SEC that we hold, all for Energy Focus, Inc/De (EFOI), as Chief Executive Officer, Director, 10% owner. Across all of them we count 4 purchases worth $1.5M and 0 sales worth $0 reported on Form 4. In the last 12 months: 1 purchase ($600.0K) and 0 sales ($0). The largest single trade was a purchase of 262,009 shares of Energy Focus, Inc/De worth $600.0K, dated 2025-11-26. The first filing on our record is dated 2023-04-04 and the latest 2025-12-31.
Energy Focus, Inc/De (EFOI)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2025-03-27 | P, purchase reported on Form 4 | 103,627 | $200.0K | 2025-06-23 |
| 2025-06-23 | P, purchase reported on Form 4 | 110,497 | $200.0K | 2025-06-23 |
| 2025-08-15 | P, purchase reported on Form 4 | 264,550 | $500.0K | 2025-08-19 |
| 2025-11-26 | P, purchase reported on Form 4 | 262,009 | $600.0K | 2025-12-31 |
Counted from the Form 4 filings this reporting owner (SEC CIK 1964786) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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