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Form 4 NEPHROS INC For: Aug 18 Filed by: Wexford GP LLC

August 20, 2026 4:15 PM EDT
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).
1. Name and Address of Reporting Person *
WEXFORD CAPITAL LP
(Last) (First) (Middle)
777 SOUTH FLAGLER DRIVE
SUITE 602 EAST
(Street)
WEST PALM BEACH FL 33401-6122
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
NEPHROS INC [ NEPH ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
08/18/2026
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
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 $ 3.60 56,872 D (2)  
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
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) $ 3.60 08/18/2026   M     3,765   (3) 08/24/2026 Common Stock 3,765 $ 0 36,198 (4) D  
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
** Signature of Reporting Person Date
Wexford GP LLC, By: Mark E. Ahern, Vice President and Assistant Secretary 08/20/2026
** Signature of Reporting Person Date
Charles E. Davidson 08/20/2026
** Signature of Reporting Person Date
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.

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