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 * Cook Robert 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) Chief Financial Officer (Last) (First) (Middle) C/O CORMEDIX INC., 400 CONNELL DRIVE, SUITE 5000 3. Date of Earliest Transaction (Month/Day/Year) 03/29/2019 (Street) BERKELEY HEIGHTS, NJ 07922 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 03/29/2019   P   100 A $ 9.35 25,517 (1) D

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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)

$ 8.3

(2)

01/10/2029

Common Stock

20,000

20,000

D

Stock Option (Right to Buy Common Stock)

$ 8.45

(3)

01/30/2027

Common Stock

33,000

33,000

D

Stock Option (Right to Buy Common Stock)

$ 8.45

(4)

01/30/2027

Common Stock

37,000

37,000

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Cook Robert W. C/O CORMEDIX INC. 400 CONNELL DRIVE, SUITE 5000 BERKELEY HEIGHTS, NJ 07922			Chief Financial Officer

Signatures

/s/ Alexander M. Donaldson, by Power of Attorney		04/01/2019
**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)	The Issuer effected a 1-for-5 reverse stock split of its common stock on March 26, 2019. All share and per share exercise price amounts shown in this Form 4 have been adjusted to reflect the reverse stock split.
(2)	These options were granted on 1/10/2019. These options vest, subject to continued employment, as follows: 35% of the options vest over time, with 25% vested on the grant date and 25% vesting on the first, second and third anniversaries of the grant date; and 65% of the options vest upon the achievement of certain milestones.
(3)	The option vests based on certain performance milestones. The option will be forfeited if such milestones are not met by certain dates.
(4)	The option vests in four equal annual installments beginning on the first anniversary of the vesting commencement date, 2/1/18, subject to continued employment.
Remarks: The Issuer effected a 1-for-5 reverse stock split of its common stock on March 26, 2019.  All share and per share exercise price amounts shown in this Form 4 have been adjusted to reflect the reverse stock split.

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