As of March 23, 2026, the three largest insider holders of EFOI are Gina Huang (Director, 3.72Mn shares), Chiao Chieh Huang (Director, 2.66Mn shares), Chiao Chieh Huang (Chief Executive Officer, 1.42Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Gina Huang | 0 | 3,720,242 | 04 Apr, 2023 | |
| Chiao Chieh Huang | 0 | 2,659,017 | 04 Apr, 2023 | |
| Chiao Chieh Huang | Chief Executive Officer | 1,421,219 | 0 | 31 Dec, 2025 |
| James Tu | Chairman And Ceo | 0 | 611,683 | 05 Apr, 2021 |
| Gina Huang | 0 | 381,832 | 23 Jun, 2022 | |
| James Tu | Chairman And Ceo | 249,851 | 0 | 18 Aug, 2021 |
| Philip Politziner | 31,400 | 0 | 23 Jun, 2022 | |
| Stephen Socolof | Chairman And Interim Ceo | 25,500 | 0 | 23 Jun, 2022 |
| Jennifer Y Cheng | 22,000 | 0 | 23 Jun, 2022 | |
| Geraldine Mcmanus | 17,000 | 0 | 27 May, 2021 | |
| Jeffery Robert Parker | 10,000 | 0 | 23 Jun, 2022 | |
| Brian J Lagarto | 10,000 | 0 | 23 Jun, 2022 | |
| James Raymond Iii Warren | Svp, Gc Corp. Secretary | 1,600 | 0 | 29 Sep, 2022 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 26 Nov, 2025 | Chiao Chieh Huang | Common Stock | A | 262,009 | $2.29 | 1,421,219 | D | P |
| 15 Aug, 2025 | Chiao Chieh Huang | Common Stock | A | 264,550 | $1.89 | 1,159,210 | D | P |
| 29 Jun, 2023 | Chiao Chieh Huang | Common Stock | A | 343,465 | $1.76 | 680,536 | D | A |
| 28 Apr, 2023 | James Raymond Iii Warren | Stock Option (Right to buy) | A | 30,000 | $0.43 | 30,000 | D | A |
| 28 Apr, 2023 | Lesley A. Matt | Stock Option (Right to buy) | A | 40,000 | $0.43 | 40,000 | D | A |
| 30 Mar, 2023 | Gina Huang | Common Stock | A | 500,000 | $0.50 | 3,720,242 | I | A |
| 28 Mar, 2023 | Chiao Chieh Huang | Common Stock | A | 108,502 | $0.56 | 2,659,017 | I | A |
| 17 Jan, 2023 | Gina Huang | Common Stock | A | 1,451,597 | $0.56 | 2,417,030 | I | A |
| 24 Feb, 2023 | Gina Huang | Common Stock | A | 803,212 | $0.50 | 3,220,242 | I | A |
| 10 Jan, 2023 | Gina Huang | Common Stock | A | 325,803 | $0.46 | 965,433 | I | A |
| 05 Jan, 2023 | Gina Huang | Common Stock | A | 257,798 | $0.39 | 639,630 | I | A |
| 28 Sep, 2022 | James Raymond Iii Warren | Common Stock | A | 800 | $0.00 | 1,600 | D | M |
| 28 Sep, 2022 | James Raymond Iii Warren | Restricted Stock Units | D | 800 | $0.00 | 1,600 | D | M |
| 04 Sep, 2022 | Daas Kaj Den | Restricted Stock Units | A | 10,000 | $0.00 | 10,000 | D | A |
| 12 Sep, 2022 | Lesley A. Matt | Stock Option (Right to buy) | A | 150,000 | $0.00 | 150,000 | D | A |
| 01 Aug, 2022 | Clifford R. Griffin | Stock Option (Right to buy) | A | 6,000 | $0.74 | 6,000 | D | A |
| 22 Jun, 2022 | Stephen Socolof | Common Stock | A | 5,000 | $0.00 | 25,500 | D | M |
| 22 Jun, 2022 | Jeffery Robert Parker | Common Stock | A | 10,000 | $0.00 | 10,000 | D | M |
| 22 Jun, 2022 | Brian J Lagarto | Common Stock | A | 10,000 | $0.00 | 10,000 | D | M |
| 22 Jun, 2022 | Philip Politziner | Common Stock | A | 5,000 | $0.00 | 31,400 | D | M |