| FORM 4 |
UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940 |
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| Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). | |||||||||||||||||
| Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10. | |||||||||||||||||
1. Name and Address of Reporting Person*
(Street)
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2. Issuer Name and Ticker or Trading Symbol
NEPHROS INC [ NEPH ] |
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
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3. Date of Earliest Transaction
(Month/Day/Year) 08/18/2026 | ||||||||||||||||||||||||||
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4. If Amendment, Date of Original Filed
(Month/Day/Year) |
6. Individual or Joint/Group Filing (Check Applicable Line)
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| Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned | ||||||||||
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| 1. Title of Security (Instr. 3) | 2. Transaction Date (Month/Day/Year) | 2A. Deemed Execution Date, if any (Month/Day/Year) | 3. Transaction Code (Instr. 8) | 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) | 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) | 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) | 7. Nature of Indirect Beneficial Ownership (Instr. 4) | |||
| Code | V | Amount | (A) or (D) | Price | ||||||
| Common Stock | 08/18/2026 | M | 812(1) | A | $3.6 | 56,872 | D(2) | |||
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) | |||||||||||||||
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| 1. Title of Derivative Security (Instr. 3) | 2. Conversion or Exercise Price of Derivative Security | 3. Transaction Date (Month/Day/Year) | 3A. Deemed Execution Date, if any (Month/Day/Year) | 4. Transaction Code (Instr. 8) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) | 6. Date Exercisable and Expiration Date (Month/Day/Year) | 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) | 8. Price of Derivative Security (Instr. 5) | 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) | 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) | 11. Nature of Indirect Beneficial Ownership (Instr. 4) | ||||
| Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | ||||||||
| Stock Option (Right to Buy) | $3.6 | 08/18/2026 | M | 3,765 | (3) | 08/24/2026 | Common Stock | 3,765 | $0 | 36,198(4) | D | ||||
1. Name and Address of Reporting Person*
(Street)
Relationship of Reporting Person(s) to Issuer
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1. Name and Address of Reporting Person*
(Street)
Relationship of Reporting Person(s) to Issuer
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1. Name and Address of Reporting Person*
(Street)
Relationship of Reporting Person(s) to Issuer
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1. Name and Address of Reporting Person*
(Street)
Relationship of Reporting Person(s) to Issuer
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| Explanation of Responses: |
| 1. Represents the net number of shares of common stock issued upon the cashless exercise of stock options to purchase 3,765 shares, after a portion of the option shares was withheld to satisfy the exercise price. |
| 2. Includes shares of common stock granted to Wexford Capital LP ("Wexford Capital") as reported in Form 4s previously filed by Arthur Amron, a current director of the Issuer and a former employee of Wexford Capital. |
| 3. One-third of the options vested immediately upon the grant date of August 24, 2016. The remainder of the options vested in equal annual installments on each of the first and second anniversaries of the grant date. |
| 4. Includes stock options granted to Wexford Capital as reported in Form 4s previously filed by Arthur Amron, a current director of the Issuer and a former employee of Wexford Capital. |
| Remarks: |
| Wexford GP LLC ("Wexford GP") may, as the General Partner of Wexford Capital, be deemed to own beneficially the securities held by Wexford Capital. Each of Charles E. Davidson ("Davidson") and Joseph M. Jacobs ("Jacobs", and together with Wexford Capital, Wexford GP and Davidson, the "Reporting Persons") may, by reason of his status as a controlling person of Wexford GP, be deemed to own beneficially the securities held by Wexford Capital. Each of Wexford Capital, Wexford GP, Davidson and Jacobs share the power to vote and to dispose of the securities beneficially owned by Wexford Capital. Each of Wexford GP, Davidson and Jacobs disclaim beneficial ownership of the securities owned by Wexford Capital, as applicable, and this report shall not be deemed as an admission that they are the beneficial owners of such securities, except to the extent of any pecuniary interests therein. |
| Wexford Capital LP, By: Wexford GP LLC, its general partner, By: Mark E. Ahern, Vice President and Assistant Secretary | 08/20/2026 | |
| Wexford GP LLC, By: Mark E. Ahern, Vice President and Assistant Secretary | 08/20/2026 | |
| Charles E. Davidson | 08/20/2026 | |
| Joseph M. Jacobs | 08/20/2026 | |
| ** Signature of Reporting Person | Date | |
| Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. | ||
| * If the form is filed by more than one reporting person, see Instruction 4 (b)(v). | ||
| ** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). | ||
| Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure. | ||
| Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number. | ||