Latest Period
Q4 2025
Security Snapshot
NEPHROS INC - Common Stock - $0.001 par value (NEPH) Institutional Ownership
CUSIP: 640671400
13F Institutional Holders and Ownership History from Q3 2019 to Q1 2026
Institutions Reporting
35
Shares (Excl. Options)
5,302,280
Price
$4.88
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- Type / Class
- Equity / Common Stock - $0.001 par value
- Symbol
- NEPH on Nasdaq
- Shares outstanding
- 10,630,964
- Price per share
- $2.87
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 5,302,280
- Total reported value
- $25,875,168
- % of total 13F portfolios
- 0%
- Share change
- +287,248
- Value change
- +$1,403,304
- Number of holders
- 35
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- NEPH - NEPHROS INC - Common Stock - $0.001 par value is tracked under CUSIP 640671400.
- 35 institutions reported positions in Q4 2025.
- 1 significant owner is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 35 to 1 between Q4 2025 and Q1 2026.
- Reported value moved from $25,875,168 to $357,600.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 35 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP 640671400?
CUSIP 640671400 identifies NEPH - NEPHROS INC - Common Stock - $0.001 par value in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 640671400:
Significant Owners of NEPHROS INC - Common Stock - $0.001 par value (NEPH) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Topline Capital Management, LLC | 5.6% | $2,815,930 | 595,334 | Topline Capital Management, LLC | 04 Aug 2025 |
As of 31 Dec 2025, 35 institutional investors reported holding 5,302,280 shares of NEPHROS INC - Common Stock - $0.001 par value (NEPH). This represents 50% of the company’s total 10,630,964 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of NEPHROS INC - Common Stock - $0.001 par value (NEPH) together control 50% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| WEXFORD CAPITAL LP | 34% | 3,617,033 | 0% | 4.5% | $17,651,117 |
| Topline Capital Management, LLC | 5.8% | 614,302 | +3% | 0.27% | $2,997,794 |
| VANGUARD GROUP INC | 2.2% | 233,644 | -17% | 0% | $1,140,183 |
| BARD ASSOCIATES INC | 1.1% | 121,619 | -4.3% | 0.15% | $593,501 |
| RENAISSANCE TECHNOLOGIES LLC | 0.98% | 103,772 | +26% | 0% | $506,407 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.7% | 74,628 | -1.7% | 0% | $364,278 |
| Cambridge Investment Research Advisors, Inc. | 0.65% | 69,149 | 0% | $337,000 | |
| HighTower Advisors, LLC | 0.56% | 59,710 | +7.2% | 0% | $291,385 |
| Mesirow Financial Investment Management, Inc. | 0.47% | 50,000 | +262% | 0.01% | $244,000 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 0.37% | 38,984 | +57% | 0.03% | $190,242 |
| BLAIR WILLIAM & CO/IL | 0.34% | 36,249 | 0% | 0% | $176,895 |
| NAVELLIER & ASSOCIATES INC | 0.26% | 27,175 | 0.01% | $132,614 | |
| De Lisle Partners LLP | 0.24% | 25,000 | 0.02% | $122,000 | |
| Quadrature Capital Ltd | 0.22% | 23,004 | 0% | $112,260 | |
| MARSHALL WACE, LLP | 0.21% | 21,983 | 0% | $107,277 | |
| XTX Topco Ltd | 0.2% | 21,617 | +49% | 0% | $105,491 |
| CITADEL ADVISORS LLC | 0.19% | 20,710 | +25% | 0% | $101,065 |
| GOLDMAN SACHS GROUP INC | 0.18% | 18,980 | +1.8% | 0% | $92,622 |
| MORGAN STANLEY | 0.17% | 17,959 | +838% | 0% | $87,640 |
| STATE STREET CORP | 0.15% | 15,698 | 0% | 0% | $76,606 |
| PRELUDE CAPITAL MANAGEMENT, LLC | 0.14% | 15,180 | 0.01% | $74,078 | |
| DIMENSIONAL FUND ADVISORS LP | 0.13% | 13,601 | 0% | 0% | $66,373 |
| Heron Bay Capital Management | 0.13% | 13,471 | 0.01% | $65,738 | |
| Cannell & Spears LLC | 0.1% | 11,000 | 0% | $53,680 | |
| Centiva Capital, LP | 0.1% | 10,835 | 0% | $52,875 |
Institutional Holders of NEPHROS INC - Common Stock - $0.001 par value (NEPH) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 120,000 | $357,600 | -$157,753 | $2.98 | 1 |
| 2025 Q4 | 5,302,280 | $25,875,168 | +$1,403,304 | $4.88 | 35 |
| 2025 Q3 | 5,015,032 | $23,721,183 | +$770,357 | $4.73 | 23 |
| 2025 Q2 | 4,852,312 | $19,846,026 | +$767,466 | $4.09 | 20 |
| 2025 Q1 | 4,664,676 | $8,023,335 | -$71,094 | $1.72 | 17 |
| 2024 Q4 | 4,711,852 | $6,907,601 | +$947 | $1.47 | 17 |
| 2024 Q3 | 4,284,771 | $7,333,250 | -$66,476 | $1.71 | 17 |
| 2024 Q2 | 4,320,368 | $9,159,330 | +$116,985 | $2.11 | 18 |
| 2024 Q1 | 4,264,479 | $9,398,998 | -$169,208 | $2.19 | 18 |
| 2023 Q4 | 4,331,833 | $14,986,626 | +$148,381 | $3.46 | 18 |
| 2023 Q3 | 4,288,960 | $6,347,955 | +$12,732 | $1.48 | 14 |
| 2023 Q2 | 4,279,808 | $6,634,282 | +$34,065 | $1.55 | 15 |
| 2023 Q1 | 4,273,188 | $4,574,310 | +$8,159 | $1.07 | 17 |
| 2022 Q4 | 4,266,471 | $4,940,524 | -$78,172 | $1.16 | 18 |
| 2022 Q3 | 4,339,484 | $3,949,000 | +$17,380 | $0.91 | 17 |
| 2022 Q2 | 632,473 | $968,000 | -$108,653 | $1.53 | 15 |
| 2022 Q1 | 643,171 | $2,827,000 | -$4,636,503 | $4.39 | 13 |
| 2021 Q4 | 1,550,944 | $9,151,000 | -$931,227 | $5.90 | 11 |
| 2021 Q3 | 1,700,497 | $14,914,000 | +$362,427 | $8.77 | 13 |
| 2021 Q2 | 5,916,801 | $60,109,000 | +$672,777 | $10.15 | 15 |
| 2021 Q1 | 5,231,367 | $34,791,000 | -$660,885 | $6.65 | 17 |
| 2020 Q4 | 5,282,295 | $45,322,000 | +$2,352,286 | $8.58 | 14 |
| 2020 Q3 | 4,474,719 | $32,353,000 | -$269,921 | $7.23 | 15 |
| 2020 Q2 | 4,502,818 | $37,780,000 | +$1,367,226 | $8.39 | 17 |
| 2020 Q1 | 4,170,822 | $26,271,000 | +$23,387,609 | $6.30 | 18 |
| 2019 Q4 | 458,415 | $4,562,000 | +$176,424 | $9.95 | 12 |
| 2019 Q3 | 258,124 | $2,089,000 | +$2,089,000 | $8.07 | 7 |