Comparable stake leader
Topline Capital Management, LLC
SEC ownership of NEPHROS INC
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001196298.
Disclosed value leader
WEXFORD CAPITAL LP
Comparable rows
27/38
Latest evidence
11 May 2026
- Public ticker
- NEPH on Nasdaq
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Topline Capital Management, LLC
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
27 of 38
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Topline Capital Management, LLC
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
11 May 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001196298
- Issuer location
- South Orange, NJ
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of NEPHROS INC (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Topline Capital Managemen...
Disclosed value leader
WEXFORD CAPITAL LP
Comparable rows
27/38
Latest evidence
11 May 2026
13D/G
13F
3/4/5
Lead comparable stake: 5.6%
11 rows are not safely comparable across share classes.
13D/G row: Topline Capital Management, LLC
Showing 1-8 of 38 holder rows.
Quick read
Topline Capital Management, LLC leads the comparable SEC ownership view at 5.6%.
27 of 38 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Topline Capital Management, LLC's linked filing trail.
Comparable ownership
Top 5
Topline Capital Management, LLC
5.6%
WEXFORD CAPITAL LP
34%
VANGUARD CAPITAL MANAGEMENT LLC
1.9%
Cornerstone Capital, Inc.
1.2%
BARD ASSOCIATES INC
1.1%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 38 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Topline Capital Management, LLC |
13D/G
13F
Company
|
5.6%
|
$2,815,930
595,334 shares
|
$0 | 04 Aug 2025 |
| WEXFORD CAPITAL LP |
13F
3/4/5
Company · 10%+ Owner
|
34%
|
$10,729,646
3,600,552 shares
|
— | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
1.9%
|
$591,956
198,643 shares
|
— | 31 Mar 2026 |
| Cornerstone Capital, Inc. |
13F
Company
|
1.2%
|
$383,526
128,700 shares
|
— | 31 Mar 2026 |
| BARD ASSOCIATES INC |
13F
Company
|
1.1%
|
$361,182
121,202 shares
|
— | 31 Mar 2026 |
| Mesirow Financial Investment Management, Inc. |
13F
Company
|
1.1%
|
$357,600
120,000 shares
|
— | 31 Mar 2026 |
| MORGAN STANLEY |
13F
Company
|
1%
|
$330,527
110,915 shares
|
— | 31 Mar 2026 |
| RENAISSANCE TECHNOLOGIES LLC |
13F
Company
|
0.94%
|
$296,212
99,400 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 05 Jul 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 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 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-12 of 12 reporting-owner rows connected to NEPHROS INC. Open a relationship link for the CIK-to-CIK filing trail.
Rows
12
Largest Forms 3/4/5 holder
WEXFORD CAPITAL LP
Net 12M change
$0
Latest report
11 May 2026
| 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 | ||
| Judy Krandel Power | Chief Financial Officer | $551,766 | Mixed | 23 Mar 2026 | ||
| Arthur H. Amron | Director | $432,831 | Mixed | 11 May 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 |
Recent insider transactions for NEPHROS INC
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Arthur H. Amron | NEPH | Common Stock | Award | 2.65% | 3,574 | 138,456 | 11 May 2026 | Direct | ||
| 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 |
* marks a reported price that did not pass the local price check.