Insider Trading for EFOI
View recent insider trading activity including purchases, sales, and awards. Insider trading can provide insights into how executives view their company's prospects.
Insider Trading Summary
Shares Acquired
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Shares Disposed
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Net Position
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Recent Activity (30 Days)
No insider transactions in the past 30 days.
Quarterly Activity (3 Months)
No insider transactions in the past 3 months.
Key Insider Activity: Nov 12, 2019 to Nov 26, 2025
Huang Chiao Chieh
ExecutiveCorporate Officer
+1.2M shares
8 transactions
Huang Gina
DirectorDirector, 10 Percent Owner:
+3.4M shares
14 transactions
NESTOR TOD A
ExecutiveChief Financial Officer
+283.0K shares
8 transactions
Tu James
ExecutiveChief Executive Officer
+514.2K shares
7 transactions
Warren James Raymond III
ExecutiveVice President
+43.8K shares
7 transactions
Transaction Details
| Date | Insider | Role | Transaction | Shares | Price | Value | Owned After | SEC Filing |
|---|---|---|---|---|---|---|---|---|
| Nov 26, 2025 | Huang Chiao Chieh | ECorporate Officer | Purchase | 262.0K | $2.29 | $600,000.61 | 1.4M | View |
| Aug 15, 2025 | Huang Chiao Chieh | ECorporate Officer | Purchase | 264.6K | $1.89 | $499,999.50 | 1.2M | View |
| Jun 23, 2025 | Huang Chiao Chieh | ECorporate Officer | Purchase | 110.5K | $1.81 | $199,999.57 | 894.7K | View |
Mar 27, 2025 | Locked | — | — | — | — | — | — | — |
Jun 29, 2023 | Locked | — | — | — | — | — | — | — |
Jun 29, 2023 | Locked | — | — | — | — | — | — | — |
Apr 28, 2023 | Locked | — | — | — | — | — | — | — |
Apr 28, 2023 | Locked | — | — | — | — | — | — | — |
Apr 28, 2023 | Locked | — | — | — | — | — | — | — |
Apr 28, 2023 | Locked | — | — | — | — | — | — | — |
Mar 30, 2023 | Locked | — | — | — | — | — | — | — |
Mar 28, 2023 | Locked | — | — | — | — | — | — | — |
Feb 24, 2023 | Locked | — | — | — | — | — | — | — |
Feb 16, 2023 | Locked | — | — | — | — | — | — | — |
Jan 17, 2023 | Locked | — | — | — | — | — | — | — |
Jan 17, 2023 | Locked | — | — | — | — | — | — | — |
Jan 17, 2023 | Locked | — | — | — | — | — | — | — |
Jan 10, 2023 | Locked | — | — | — | — | — | — | — |
Jan 5, 2023 | Locked | — | — | — | — | — | — | — |
Aug 17, 2022 | Locked | — | — | — | — | — | — | — |
Aug 1, 2022 | Locked | — | — | — | — | — | — | — |
Aug 1, 2022 | Locked | — | — | — | — | — | — | — |
Jun 22, 2022 | Locked | — | — | — | — | — | — | — |
Jun 22, 2022 | Locked | — | — | — | — | — | — | — |
Jun 22, 2022 | Locked | — | — | — | — | — | — | — |
Jun 22, 2022 | Locked | — | — | — | — | — | — | — |
Jun 22, 2022 | Locked | — | — | — | — | — | — | — |
Jun 22, 2022 | Locked | — | — | — | — | — | — | — |
Jun 22, 2022 | Locked | — | — | — | — | — | — | — |
Jun 22, 2022 | Locked | — | — | — | — | — | — | — |
Jun 22, 2022 | Locked | — | — | — | — | — | — | — |
Jun 22, 2022 | Locked | — | — | — | — | — | — | — |
Jun 22, 2022 | Locked | — | — | — | — | — | — | — |
Jun 22, 2022 | Locked | — | — | — | — | — | — | — |
Feb 22, 2022 | Locked | — | — | — | — | — | — | — |
Feb 22, 2022 | Locked | — | — | — | — | — | — | — |
Feb 19, 2022 | Locked | — | — | — | — | — | — | — |
Feb 19, 2022 | Locked | — | — | — | — | — | — | — |
Feb 11, 2022 | Locked | — | — | — | — | — | — | — |
Feb 11, 2022 | Locked | — | — | — | — | — | — | — |
Feb 11, 2022 | Locked | — | — | — | — | — | — | — |
Feb 11, 2022 | Locked | — | — | — | — | — | — | — |
Feb 11, 2022 | Locked | — | — | — | — | — | — | — |
Feb 11, 2022 | Locked | — | — | — | — | — | — | — |
Feb 11, 2022 | Locked | — | — | — | — | — | — | — |
Sep 28, 2021 | Locked | — | — | — | — | — | — | — |
Sep 28, 2021 | Locked | — | — | — | — | — | — | — |
Aug 25, 2021 | Locked | — | — | — | — | — | — | — |
Aug 18, 2021 | Locked | — | — | — | — | — | — | — |
Aug 16, 2021 | Locked | — | — | — | — | — | — | — |
May 26, 2021 | Locked | — | — | — | — | — | — | — |
May 26, 2021 | Locked | — | — | — | — | — | — | — |
May 26, 2021 | Locked | — | — | — | — | — | — | — |
May 26, 2021 | Locked | — | — | — | — | — | — | — |
May 26, 2021 | Locked | — | — | — | — | — | — | — |
May 26, 2021 | Locked | — | — | — | — | — | — | — |
May 26, 2021 | Locked | — | — | — | — | — | — | — |
May 26, 2021 | Locked | — | — | — | — | — | — | — |
May 26, 2021 | Locked | — | — | — | — | — | — | — |
May 26, 2021 | Locked | — | — | — | — | — | — | — |
Apr 1, 2021 | Locked | — | — | — | — | — | — | — |
Apr 1, 2021 | Locked | — | — | — | — | — | — | — |
Mar 24, 2021 | Locked | — | — | — | — | — | — | — |
Feb 19, 2021 | Locked | — | — | — | — | — | — | — |
Feb 19, 2021 | Locked | — | — | — | — | — | — | — |
Feb 19, 2021 | Locked | — | — | — | — | — | — | — |
Feb 19, 2021 | Locked | — | — | — | — | — | — | — |
Feb 19, 2021 | Locked | — | — | — | — | — | — | — |
Feb 19, 2021 | Locked | — | — | — | — | — | — | — |
Feb 19, 2021 | Locked | — | — | — | — | — | — | — |
Dec 28, 2020 | Locked | — | — | — | — | — | — | — |
Dec 28, 2020 | Locked | — | — | — | — | — | — | — |
Nov 11, 2020 | Locked | — | — | — | — | — | — | — |
Nov 11, 2020 | Locked | — | — | — | — | — | — | — |
Sep 17, 2020 | Locked | — | — | — | — | — | — | — |
Sep 17, 2020 | Locked | — | — | — | — | — | — | — |
Sep 17, 2020 | Locked | — | — | — | — | — | — | — |
Sep 17, 2020 | Locked | — | — | — | — | — | — | — |
Sep 17, 2020 | Locked | — | — | — | — | — | — | — |
Sep 17, 2020 | Locked | — | — | — | — | — | — | — |
Sep 17, 2020 | Locked | — | — | — | — | — | — | — |
Sep 17, 2020 | Locked | — | — | — | — | — | — | — |
Sep 17, 2020 | Locked | — | — | — | — | — | — | — |
Sep 17, 2020 | Locked | — | — | — | — | — | — | — |
Apr 15, 2020 | Locked | — | — | — | — | — | — | — |
Apr 14, 2020 | Locked | — | — | — | — | — | — | — |
Apr 13, 2020 | Locked | — | — | — | — | — | — | — |
Apr 13, 2020 | Locked | — | — | — | — | — | — | — |
Mar 18, 2020 | Locked | — | — | — | — | — | — | — |
Mar 18, 2020 | Locked | — | — | — | — | — | — | — |
Mar 18, 2020 | Locked | — | — | — | — | — | — | — |
Mar 18, 2020 | Locked | — | — | — | — | — | — | — |
Mar 18, 2020 | Locked | — | — | — | — | — | — | — |
Mar 18, 2020 | Locked | — | — | — | — | — | — | — |
Mar 18, 2020 | Locked | — | — | — | — | — | — | — |
Jan 16, 2020 | Locked | — | — | — | — | — | — | — |
Jan 16, 2020 | Locked | — | — | — | — | — | — | — |
Dec 17, 2019 | Locked | — | — | — | — | — | — | — |
Dec 17, 2019 | Locked | — | — | — | — | — | — | — |
Nov 12, 2019 | Locked | — | — | — | — | — | — | — |
Click "View" in the SEC Filing column to access the detailed SEC form submission for each transaction.
Executive Activity:
Executives have been net buyers of EFOI stock, which is typically a strong positive signal.