NEPHROS INC (NEPH)
Data as of , from SEC Form 4 filings.
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About NEPHROS INC (NEPH)
Nephros Inc is a commercial-stage company that develops and sells high-performance water solutions to the medical and commercial markets. In medical markets, it sells water filtration products and waterborne pathogen detection products. In commercial markets, the company manufactures and sells water filters that improve the taste and odor of water and reduce biofilm, bacteria, and scale build-up in downstream equipment. The company's subsidiary is engaged in the development of its second-generation hemodiafiltration system and other products focused on improving therapies for patients with renal disease. The company generates almost all of revenue from product sales and a small amount from royalty revenue and other revenues.
- SOUTH ORANGE, NJ
- 36
- 2004
- Nasdaq
NEPH Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Grant or award | 1 | 2,418 | |
| Option exercise | 2 | 4,577 | |
| Other acquisition / disposition | 5 | 3,421,116 |
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
NEPH insider transactions (Form 4)
1913 Form 4 filings on record, the earliest from Aug 11, 2025, newest first.
| Traded | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| WEXFORD CAPITAL LP - 10% Owner | Other | Common Stock | 3,355,111 | $0.00 | - | |
| WEXFORD CAPITAL LP - 10% Owner | Other | Common Stock | 22,710 | $3.95 | $90K | |
| Arthur H. Amron - Director | Other | Common Stock | 17,749 | $0.00 | - | |
| Arthur H. Amron - Director | Other | Common Stock | 2,836 | $0.00 | - | |
| Arthur H. Amron - Director | Other | Common Stock | 22,710 | $3.95 | $90K | |
| WEXFORD CAPITAL LP - 10% Owner | Option exercise | Common Stock | 812 footnote F1 | $3.60 | $3K | |
| WEXFORD CAPITAL LP - 10% Owner | Option exercise | Stock Option (Right to Buy) | 3,765 | $0.00 | - | |
| ||||||
| Arthur H. Amron - Director | Grant or award | Common Stock | 2,418 footnote F1 | $0.00 | - | |
| ||||||
| Arthur H. Amron - Director | Grant or award | Common Stock | 3,574 footnote F1 | $0.00 | - | |
| ||||||
 Robert R. Banks Jr. - Officer | Option exercise | Common Stock | 120,000 | $1.44 | $173K | |
| Robert R. Banks Jr. - Officer | Option exercise | Stock Option (right to buy) | 120,000 | $0.00 | - | |
 Judy Krandel - Officer | Option exercise | Common Stock | 68,861 | $1.71 | $118K | |
| Judy Krandel - Officer | Option exercise | Stock Option (right to buy) | 68,861 | $0.00 | - | |
| Arthur H. Amron - Director | Grant or award | Common Stock | 3,610 footnote F1 | $0.00 | - | |
| ||||||
| Judy Krandel - Officer | Grant or award | Stock Option (right to buy) | 4,000 | $0.00 | - | |
| Lisa Marie Nettis - Director | Grant or award | Common Stock | 1,622 | $0.00 | - | |
| Oliver J. Spandow - Director | Grant or award | Common Stock | 8,036 | $0.00 | - | |
| Arthur H. Amron - Director | Grant or award | Common Stock | 5,391 | $0.00 | - | |
| Lisa Marie Nettis - Director | Grant or award | Stock Option (right to buy) | 13,229 | $0.00 | - | |
NEPH insider trading FAQ
What is the latest insider trade for NEPH?
NEPHROS INC (NEPH) had 4 insider filings in the last 90 days, with the most recent on 16 September 2026. The full record for NEPH runs to 13 Form 4 filings, the earliest from 11 August 2025. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying NEPH stock?
No insider purchases of NEPH were filed in the last 90 days.
How many insiders are selling NEPH stock?
No insider sales of NEPH were filed in the last 90 days.
Where can I see NEPH SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects NEPH Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Health Care companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - WEXFORD CAPITAL LP view on EDGAR
- - Arthur H. Amron view on EDGAR
- - WEXFORD CAPITAL LP view on EDGAR
- - Arthur H. Amron view on EDGAR
- - Arthur H. Amron view on EDGAR
- - Robert R. Banks Jr. view on EDGAR
- - Judy Krandel view on EDGAR
- - Arthur H. Amron view on EDGAR
- - Judy Krandel view on EDGAR
Related companies with recent insider activity
Learn more
- What the Form 4 transaction codes mean
- Grants, option exercises, gifts and tax withholding are not trades on the market. The codes say which is which.
- Insider activity in Health Care
- Where NEPH's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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- NEPH on your watchlist
- Every NEPH Form 4 filing on record
- Up to 3 months of NEPH price history
- The daily trading plan of ranked insider buys, on a delay, with the plan archive
