| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Report Date |
|---|---|---|---|---|---|
| WEXFORD CAPITAL LP | 10%+ Owner | $8,810,910 | 13 Mar 2024 | ||
| Oliver Spandow Power | Director | $614,573 | 10 Nov 2025 | ||
| Arthur H. Amron | Director | $570,566 | 16 Mar 2026 | ||
| Daron Evans | CEO Specialty Renal Products | $351,795 | 24 May 2021 | ||
| Andrew Astor Power | President, CEO & CFO, Director | $204,342 | 05 Mar 2022 | ||
| Robert R. Banks Jr. | President and CEO, Director | $156,870 | 14 May 2024 | ||
| Alisa Lask | Director | $109,167 | 01 Jan 2025 | ||
| Tom Gwydir Power | Director | $95,210 | 05 Jan 2023 | ||
| Wesley S. Lobo | Chief Marketing Officer | $77,461 | 16 Feb 2022 | ||
| Lisa Nettis Power | Director | $70,245 | 10 Nov 2025 | ||
| Joseph Michael Harris | Director | $39,719 | 01 Jan 2025 | ||
| Judy Krandel Power | Chief Financial Officer | $16,080 | 16 Mar 2026 |
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Arthur H. Amron | NEPH | Common Stock | Award | 2.75% | 3,610 | 134,882 | 16 Mar 2026 | Direct | ||
| Judy Krandel Power | NEPH | Stock Option (right to buy) | Award | 4,000 | 4,000 | 16 Mar 2026 | Direct | |||
| Lisa Nettis Power | NEPH | Common Stock | Award | 1,622 | 1,622 | 10 Nov 2025 | Direct | |||
| Oliver Spandow Power | NEPH | Common Stock | Award | 7% | 8,036 | 122,881 | 10 Nov 2025 | Direct | ||
| Arthur H. Amron | NEPH | Common Stock | Award | 4.28% | 5,391 | 131,272 | 10 Nov 2025 | Direct | ||
| Lisa Nettis Power | NEPH | Stock Option (right to buy) | Award | 13,229 | 13,229 | 11 Aug 2025 | Direct | |||
| Judy Krandel Power | NEPH | Stock Option (right to buy) | Award | 54,359 | 54,359 | 27 Mar 2025 | Direct |