Nephros's three largest insider shareholders as of March 23, 2026 are Capital Lp Wexford (Director, 3.54Mn shares), Arthur H Amron (Director, 131.27K shares), Oliver J. Spandow (Director, 122.88K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Capital Lp Wexford | 0 | 3,544,492 | 03 Jun, 2021 | |
| Arthur H Amron | 134,882 | 0 | 18 Mar, 2026 | |
| Arthur H Amron | 131,272 | 0 | 13 Nov, 2025 | |
| Oliver J. Spandow | 122,881 | 0 | 13 Nov, 2025 | |
| Andrew Astor | President, Ceo Cfo | 92,773 | 0 | 07 Mar, 2022 |
| Robert R. Jr. Banks | President And Ceo | 70,000 | 0 | 16 May, 2024 |
| Capital Lp Wexford | 56,060 | 0 | 14 Mar, 2024 | |
| Alisa Lask | 48,629 | 0 | 15 Dec, 2023 | |
| Tom Gwydir | 43,226 | 0 | 09 Jan, 2023 | |
| Wesley S. Lobo | Chief Marketing Officer | 35,168 | 0 | 18 Feb, 2022 |
| Joseph Michael Harris | 17,693 | 0 | 15 Dec, 2023 | |
| Daron Evans | Ceo Specialty Renal Products | 0 | 8,669 | 01 Jun, 2021 |
| Lisa Marie Nettis | 1,622 | 0 | 13 Nov, 2025 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 16 Mar, 2026 | Arthur H Amron | Common Stock | A | 3,610 | $0.00 | 134,882 | D | A |
| 16 Mar, 2026 | Judy Krandel | Stock Option (right to buy) | A | 4,000 | $0.00 | 4,000 | D | A |
| 10 Nov, 2025 | Arthur H Amron | Common Stock | A | 5,391 | $0.00 | 131,272 | D | A |
| 10 Nov, 2025 | Lisa Marie Nettis | Common Stock | A | 1,622 | $0.00 | 1,622 | D | A |
| 10 Nov, 2025 | Arthur H Amron | Common Stock | A | 5,391 | $0.00 | 131,272 | D | A |
| 10 Nov, 2025 | Oliver J. Spandow | Common Stock | A | 8,036 | $0.00 | 122,881 | D | A |
| 11 Aug, 2025 | Lisa Marie Nettis | Stock Option (right to buy) | A | 13,229 | $0.00 | 13,229 | D | A |
| 27 Mar, 2025 | Judy Krandel | Stock Option (right to buy) | A | 54,359 | $0.00 | 54,359 | D | A |
| 27 Mar, 2025 | Judy Krandel | Stock Option (right to buy) | A | 54,359 | $0.00 | 54,359 | D | A |
| 01 Jan, 2025 | Arthur H Amron | Common Stock | A | 22,418 | $0.00 | 125,881 | D | A |
| 01 Jan, 2025 | Arthur H Amron | Common Stock | A | 22,418 | $0.00 | 125,881 | D | A |
| 01 Jan, 2025 | Oliver J. Spandow | Common Stock | A | 33,241 | $0.00 | 114,845 | D | A |
| 01 Jan, 2025 | Arthur H Amron | Stock Option (Right to Buy) | A | 7,050 | $0.00 | 7,050 | D | A |
| 01 Jan, 2025 | Arthur H Amron | Stock Option (Right to Buy) | A | 7,050 | $0.00 | 7,050 | D | A |
| 01 Jan, 2025 | Joseph Michael Harris | Stock Option (right to buy) | A | 7,050 | $0.00 | 7,050 | D | A |
| 01 Jan, 2025 | Alisa Lask | Stock Option (right to buy) | A | 7,050 | $0.00 | 7,050 | D | A |
| 01 Jan, 2025 | Oliver J. Spandow | Stock Option (Right to Buy) | A | 7,050 | $0.00 | 7,050 | D | A |
| 28 May, 2024 | Arthur H Amron | Common Stock | A | 2,000 | $2.22 | 100,463 | D | P |
| 28 May, 2024 | Arthur H Amron | Common Stock | A | 2,000 | $2.22 | 100,463 | D | P |
| 30 May, 2024 | Arthur H Amron | Common Stock | A | 3,000 | $2.24 | 103,463 | D | P |