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 * ARMSTRONG JR. JOHN L.   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 __X__ Officer (give title below) _____ Other (specify below) Exec VP of Tech Operations (Last) (First) (Middle) C/O CORMEDIX INC., 1430 U.S. HIGHWAY 206, SUITE 200 3. Date of Earliest Transaction (Month/Day/Year) 03/01/2017 (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

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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)

$ 2.18

03/01/2017

03/01/2017

A

100,000 (1)

(1)

03/01/2027

Common Stock

100,000

$ 0

100,000

D

Restricted Stock Units

(2)

(2)

02/28/2027

Common Stock

36,057

36,057

D

Stock Option (Right to Buy Common Stock)

$ 1.52

(3)

11/14/2024

Common Stock

10,000

10,000

D

Stock Option (Right to Buy Common Stock)

$ 3.25

(4)

07/28/2025

default

15,000

15,000

D

Stock Option (Right to Buy Common Stock)

$ 2.51

(5)

03/08/2026

Common Stock

200,000

200,000

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
ARMSTRONG JR. JOHN L. C/O CORMEDIX INC. 1430 U.S. HIGHWAY 206, SUITE 200 BEDMINSTER, NJ 07921			Exec VP of Tech Operations

Signatures

/s/ Alexander M. Donaldson, by power of attorney		03/02/2017
**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)	The option vests based on certain performance milestones, subject to continued employment. The option will be forfeited if such milestones are not met by certain dates.
(2)	Each restricted stock unit represents the right to receive one share of CorMedix Inc. common stock. The restricted stock units vest 50% on December 31, 2017 and 50% on December 31, 2018, subject to continued employment.
(3)	These options vested upon the achievement of certain milestones, subject to continued employment.
(4)	One third of these options vested upon the achievement of a certain milestone and one third vested on each of December 31, 2015 and July 28, 2015.
(5)	15,000 of these options vest monthly over four years, beginning on March 9, 2016, 20,000 vest upon the achievement of a certain milestone, subject to continued employment, and the rest vested upon the achievement of certain milestones.

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