Quick Takeaways
- NEPH - NEPHROS INC has 12 insiders with reported activity on this page.
- No net insider buy/sell flow is currently reported for the last year.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 12 Insiders of NEPHROS INC
- Symbol
- NEPH on Nasdaq
- Location
- South Orange, NJ
What Changed
- No meaningful buy/sell imbalance is currently visible in the one-year window.
- Activity will update as new Forms 3/4/5 are filed.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsInsider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 10 May 2025.
Buys
$0
Shares: 0
Insiders: 0
Sells
$0
Shares: 0
Insiders: 0
Net
$0
Shares: 0
Insiders: 0
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
NEPHROS INC executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| WEXFORD CAPITAL LP | 10%+ Owner | $8,810,910 | Mixed | 13 Mar 2024 | ||
| Robert R. Banks Jr. | President and CEO | $1,880,603 | Mixed | 23 Mar 2026 | ||
| Oliver Spandow Power | Director | $614,573 | Mixed | 10 Nov 2025 | ||
| Arthur H. Amron | Director | $570,566 | Mixed | 16 Mar 2026 | ||
| Judy Krandel Power | Chief Financial Officer | $551,766 | Mixed | 23 Mar 2026 | ||
| Daron Evans | CEO Specialty Renal Products | $351,795 | Mixed | 24 May 2021 | ||
| Andrew Astor Power | President, CEO & CFO, Director | $204,342 | Mixed | 05 Mar 2022 | ||
| Alisa Lask | Director | $109,167 | Mixed | 01 Jan 2025 | ||
| Tom Gwydir Power | Director | $95,210 | Mixed | 05 Jan 2023 | ||
| Wesley S. Lobo | Chief Marketing Officer | $77,461 | Mixed | 16 Feb 2022 | ||
| Lisa Nettis Power | Director | $70,245 | Mixed | 10 Nov 2025 | ||
| Joseph Michael Harris | Director | $39,719 | Mixed | 01 Jan 2025 |
Top shareholders of NEPHROS INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| WEXFORD CAPITAL LP |
13F
3/4/5
|
Company · 10%+ Owner |
34%
|
3,617,033
|
$17,651,117 | — | 31 Dec 2025 | |
| Topline Capital Management, LLC |
13F
13D/G
|
Company |
5.6%
from 13D/G
|
614,302
|
$2,997,794 | — | 31 Dec 2025 | |
| Robert R. Banks Jr. |
3/4/5
|
President and CEO |
—
mixed-class rows
|
427,165
mixed-class rows
|
$1,880,603 | — | 23 Mar 2026 | |
| VANGUARD GROUP INC |
13F
|
Company |
2.2%
|
233,644
|
$1,140,183 | — | 31 Dec 2025 | |
| Oliver Spandow Power |
3/4/5
|
Director |
—
mixed-class rows
|
129,931
mixed-class rows
|
$614,573 | — | 10 Nov 2025 | |
| BARD ASSOCIATES INC |
13F
|
Company |
1.1%
|
121,619
|
$593,501 | — | 31 Dec 2025 | |
| Arthur H. Amron |
3/4/5
|
Director |
—
mixed-class rows
|
141,932
mixed-class rows
|
$570,566 | — | 16 Mar 2026 | |
| Judy Krandel Power |
3/4/5
|
Chief Financial Officer |
—
mixed-class rows
|
122,524
mixed-class rows
|
$551,766 | — | 23 Mar 2026 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.98%
|
103,772
|
$506,407 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.7%
|
74,628
|
$364,278 | — | 31 Dec 2025 | |
| Daron Evans |
3/4/5
|
CEO Specialty Renal Products |
—
mixed-class rows
|
179,718
mixed-class rows
|
$351,795 | — | 24 May 2021 | |
| Cambridge Investment Research Advisors, Inc. |
13F
|
Company |
0.65%
|
69,149
|
$337,000 | — | 31 Dec 2025 | |
| HighTower Advisors, LLC |
13F
|
Company |
0.56%
|
59,710
|
$291,385 | — | 31 Dec 2025 | |
| Mesirow Financial Investment Management, Inc. |
13F
|
Company |
0.47%
|
50,000
|
$244,000 | — | 31 Dec 2025 | |
| Andrew Astor Power |
3/4/5
|
President, CEO & CFO, Director |
—
mixed-class rows
|
131,385
mixed-class rows
|
$204,342 | — | 05 Mar 2022 | |
| ESSEX INVESTMENT MANAGEMENT CO LLC |
13F
|
Company |
0.37%
|
38,984
|
$190,242 | — | 31 Dec 2025 | |
| BLAIR WILLIAM & CO/IL |
13F
|
Company |
0.34%
|
36,249
|
$176,895 | — | 31 Dec 2025 | |
| NAVELLIER & ASSOCIATES INC |
13F
|
Company |
0.26%
|
27,175
|
$132,614 | — | 31 Dec 2025 | |
| De Lisle Partners LLP |
13F
|
Company |
0.24%
|
25,000
|
$122,000 | — | 31 Dec 2025 | |
| Quadrature Capital Ltd |
13F
|
Company |
0.22%
|
23,004
|
$112,260 | — | 31 Dec 2025 | |
| Alisa Lask |
3/4/5
|
Director |
—
mixed-class rows
|
55,679
mixed-class rows
|
$109,167 | — | 01 Jan 2025 | |
| MARSHALL WACE, LLP |
13F
|
Company |
0.21%
|
21,983
|
$107,277 | — | 31 Dec 2025 | |
| XTX Topco Ltd |
13F
|
Company |
0.2%
|
21,617
|
$105,491 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.19%
|
20,710
|
$101,065 | — | 31 Dec 2025 | |
| Tom Gwydir Power |
3/4/5
|
Director |
—
mixed-class rows
|
50,306
mixed-class rows
|
$95,210 | — | 05 Jan 2023 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.18%
|
18,980
|
$92,622 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
0.17%
|
17,959
|
$87,640 | — | 31 Dec 2025 | |
| Wesley S. Lobo |
3/4/5
|
Chief Marketing Officer |
—
mixed-class rows
|
206,714
mixed-class rows
|
$77,461 | — | 16 Feb 2022 | |
| STATE STREET CORP |
13F
|
Company |
0.15%
|
15,698
|
$76,606 | — | 31 Dec 2025 | |
| PRELUDE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.14%
|
15,180
|
$74,078 | — | 31 Dec 2025 | |
| Lisa Nettis Power |
3/4/5
|
Director |
—
mixed-class rows
|
14,851
mixed-class rows
|
$70,245 | — | 10 Nov 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
0.13%
|
13,601
|
$66,373 | — | 31 Dec 2025 | |
| Heron Bay Capital Management |
13F
|
Company |
0.13%
|
13,471
|
$65,738 | — | 31 Dec 2025 | |
| Cannell & Spears LLC |
13F
|
Company |
0.1%
|
11,000
|
$53,680 | — | 31 Dec 2025 | |
| Centiva Capital, LP |
13F
|
Company |
0.1%
|
10,835
|
$52,875 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.1%
|
10,828
|
$52,841 | — | 31 Dec 2025 | |
| Joseph Michael Harris |
3/4/5
|
Director |
—
mixed-class rows
|
24,743
mixed-class rows
|
$39,719 | — | 01 Jan 2025 | |
| ELKHORN PARTNERS LIMITED PARTNERSHIP |
13F
|
Company |
0.07%
|
7,000
|
$34,160 | — | 31 Dec 2025 | |
| Kestra Advisory Services, LLC |
13F
|
Company |
0.06%
|
6,015
|
$29,353 | — | 31 Dec 2025 | |
| OSAIC HOLDINGS, INC. |
13F
|
Company |
0.02%
|
1,625
|
$7,930 | — | 31 Dec 2025 | |
| ROYAL BANK OF CANADA |
13F
|
Company |
0.01%
|
738
|
$4,000 | — | 31 Dec 2025 | |
| SageView Advisory Group, LLC |
13F
|
Company |
0.01%
|
590
|
$2,880 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0%
|
73
|
$356 | — | 31 Dec 2025 | |
| HARBOUR INVESTMENTS, INC. |
13F
|
Company |
0%
|
50
|
$244 | — | 31 Dec 2025 | |
| JONES FINANCIAL COMPANIES LLLP |
13F
|
Company |
0%
|
31
|
$151 | — | 31 Dec 2025 | |
| NewEdge Advisors, LLC |
13F
|
Company |
0%
|
27
|
$132 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for NEPHROS INC
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Robert R. Banks Jr. | NEPH | Common Stock | Options Exercise | 171.4% | 120,000 | 190,000 | 23 Mar 2026 | Direct | ||
| Robert R. Banks Jr. | NEPH | Stock Option (right to buy) | Options Exercise | -33.6% | -120,000 | 237,165 | 23 Mar 2026 | Direct | ||
| Judy Krandel Power | NEPH | Common Stock | Options Exercise | 68,861 | 68,861 | 23 Mar 2026 | Direct | |||
| Judy Krandel Power | NEPH | Stock Option (right to buy) | Options Exercise | -56.2% | -68,861 | 53,663 | 23 Mar 2026 | Direct | ||
| 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 |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.