As of May 30, 2026, the three largest insider holders of ERII are Ole Peter Lorentzen (TenPercentOwner, 5.16Mn shares), Arve Hanstveit (Director, 382.51K shares), Robert Yu Lang Mao (President And Ceo, 248.94K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Robert Yu Lang Mao | President And Ceo | 248,935 | 0 | 24 May, 2024 |
| David W Moon | President And Ceo | 233,069 | 0 | 19 Feb, 2026 |
| Joan Kai Chow | - | 34,022 | 0 | 06 Jun, 2025 |
| Alexander J Buehler | - | 66,328 | 0 | 06 Jun, 2025 |
| Ole Peter Lorentzen | - | 0 | 5,155,239 | 17 Sep, 2021 |
| Arve Hanstveit | - | 382,509 | 0 | 08 Apr, 2026 |
| Sherif Foda | - | 9,619 | 0 | 16 Sep, 2022 |
| Lisa A Pollina | - | 4,007 | 0 | 13 Jun, 2023 |
| Rodney Clemente | Svp, Water | 116,008 | 0 | 06 Mar, 2026 |
| William Yeung | Chief Legal Officer | 104,167 | 0 | 19 Feb, 2026 |
| Pamela L. Tondreau | - | 55,890 | 0 | 06 Jun, 2025 |
| Farshad Ghasripoor | Chief Technology Officer | 52,860 | 70,230 | 05 Feb, 2025 |
| Joshua Ballard | Chief Financial Officer | 40,376 | 0 | 30 May, 2024 |
| Michael S. Mancini | Chief Financial Officer | 75,051 | 0 | 19 Feb, 2026 |
| Matthew Hostetler | Chief Human Resources Officer | 46,556 | 0 | 19 Feb, 2026 |
| Natarajan Ramanan | Chief Technology Officer | 52,565 | 0 | 06 Mar, 2026 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 06 Apr, 2026 | Arve Hanstveit | Common Stock | D | 2,419 | $10.29 | 382,509 | D | S |
| 02 Apr, 2026 | Arve Hanstveit | Common Stock | D | 165,292 | $10.14 | 384,928 | D | S |
| 10 Mar, 2026 | Arve Hanstveit | Common Stock | D | 25,000 | $10.96 | 550,220 | D | S |
| 05 Mar, 2026 | Arve Hanstveit | Common Stock | D | 38,418 | $10.71 | 586,802 | D | S |
| 06 Mar, 2026 | Arve Hanstveit | Common Stock | D | 11,582 | $10.62 | 575,220 | D | S |
| 04 Mar, 2026 | Rodney Clemente | Common Stock | D | 20,568 | $10.61 | 116,008 | D | S |
| 05 Mar, 2026 | Natarajan Ramanan | Common Stock | D | 272 | $10.57 | 52,565 | D | S |
| 05 Mar, 2026 | Natarajan Ramanan | Common Stock | D | 272 | $10.57 | 52,565 | D | S |
| 05 Mar, 2026 | Natarajan Ramanan | Common Stock | D | 272 | $10.57 | 52,565 | D | S |
| 03 Mar, 2026 | Natarajan Ramanan | Common Stock | D | 2,724 | $10.22 | 52,837 | D | F |
| 03 Mar, 2026 | Natarajan Ramanan | Common Stock | D | 2,724 | $10.22 | 52,837 | D | F |
| 03 Mar, 2026 | Natarajan Ramanan | Common Stock | D | 2,724 | $10.22 | 52,837 | D | F |
| 17 Feb, 2026 | Michael S. Mancini | Common Stock | A | 45,626 | $0.00 | 75,051 | D | A |
| 17 Feb, 2026 | Matthew Hostetler | Common Stock | A | 25,959 | $0.00 | 46,556 | D | A |
| 17 Feb, 2026 | Natarajan Ramanan | Common Stock | A | 29,106 | $0.00 | 55,561 | D | A |
| 17 Feb, 2026 | Michael S. Mancini | Common Stock | A | 45,626 | $0.00 | 75,051 | D | A |
| 17 Feb, 2026 | Natarajan Ramanan | Common Stock | A | 29,106 | $0.00 | 55,561 | D | A |
| 17 Feb, 2026 | Rodney Clemente | Common Stock | A | 45,626 | $0.00 | 136,576 | D | A |
| 17 Feb, 2026 | William Yeung | Common Stock | A | 25,959 | $0.00 | 104,167 | D | A |
| 17 Feb, 2026 | William Yeung | Common Stock | A | 25,959 | $0.00 | 104,167 | D | A |