Huang Chiao Chieh — Insider Stock Purchases
Chief Executive Officer. Every open-market stock purchase by Huang Chiao Chieh that we've tracked from SEC Form 4 filings, scored on our six-factor model. Not financial advice.
Tracked buys
1
Total value
$600,001
Most recent
Nov 26, 2025
| Ticker | Insider | Role | Value | Filed | Signal | Score |
|---|---|---|---|---|---|---|
| EFOI ENERGY FOCUS, INC/DE | Huang Chiao Chieh | Chief Executive Officer | $600,001 | Dec 31, 2025 | AVOID | 41 |
About this profile
This page collects open-market share purchases disclosed by Huang Chiao Chieh in SEC Form 4 filings. When an insider buys with personal money on the open market, it is the cleanest conviction signal available — far more informative than a sale.
Each purchase is scored with our six-factor methodology. To see how these signals performed against the S&P 500, view the track record, or browse all tracked insiders on the insiders directory.
Not financial advice. For educational purposes only. Form 4 data can be amended or filed late; analysis is generated using AI and may contain errors.