FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Lefkowitz Steven W   2. Issuer Name and Ticker or Trading Symbol CorMedix Inc. [CRMD] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O CORMEDIX INC., 1430 U.S. HIGHWAY 206, SUITE 200 3. Date of Earliest Transaction (Month/Day/Year) 12/12/2017 (Street) BEDMINSTER, NJ 07921 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) 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, $0.001 par value per share 12/12/2017(1)   P   135,416 A $ 0.48 195,379 D (2)   Common Stock, $0.001 par value per share               115,757 I (3) Wade Capital Corporation Money Purchase Plan Common Stock, $0.001 par value per share               10,000 I Reporting Person's Wife

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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 Underlying Securities (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 of Derivative Security: 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 Common Stock)

$ 0.45

(4)

06/25/2027

Common Stock

75,000

75,000

D

Warrant (Right to Purchase Common Stock)

$ 0.9

01/08/2015

01/08/2020

Common Stock

22,500

22,500

D

Warrant (Right to Purchase Common Stockk

$ 0.9

01/08/2015

01/08/2020

Commo Stock

15,000

15,000

I (3)

Wade Capital Corporation Money Purchase Plan

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Lefkowitz Steven W C/O CORMEDIX INC. 1430 U.S. HIGHWAY 206, SUITE 200 BEDMINSTER, NJ 07921

Signatures

/s/ Alexander M. Donaldson, by power of attorney		12/14/2017
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Purchase was contracted on November 17, 2017, but not closed until December 12, 2017.
(2)	Includes 24,963 shares held by the reporting person for the benefit of his minor son.
(3)	The reporting person beneficially owns these securities through Wade Capital Corporation Money Purchase Plan (an entity for which he has voting and investment control).
(4)	These options vest 1/3 on the date of grant, 1/3 on the first anniversary of the date of grant and 1/3 on the second anniversary of the date of grant.

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