Sec Form 4/A Filing - Duffy Matthew @ CorMedix Inc. - 2015-06-02

FORM 4/A 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 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 Duffy Matthew 2. Issuer Name and Ticker or Trading Symbol CorMedix Inc. [ CRMD] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O CORMEDIX INC., 1430 US HIGHWAY 206, SUITE 200 3. Date of Earliest Transaction (MM/DD/YY) 06/02/2015 (Street) BEDMINSTER, NJUS 07921 4. If Amendment, Date Original Filed (MM/DD/YY) 06/04/2015 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 06/02/2015 M 15,000 A $ 0.28 58,223 D Common Stock, $0.001 par value per share 06/02/2015 M 25,000 A $ 0.29 83,223 D Common Stock, $0.001 par value per share 06/04/2015 S 30,000 D $ 6.4804 53,223 D

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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) $ 2.02 ( 1 ) 01/09/2024 Common Stock, $0.001 par value per share 150,000 150,000 D Stock Option (right to buy) $ 2.02 ( 2 ) 01/09/2024 Common Stock, $0.001 par value per share 30,000 30,000 D Stock Option (right to buy) $ 0.9 ( 3 ) 03/20/2023 Common Stock, $0.001 par value per share 100,000 100,000 D Stock Option (right to buy) $ 0.68 ( 4 ) 12/05/2022 Common Stock, $0.001 par value per share 125,000 125,000 D Warrant (right to purchase Common Stock) $ 0.4 11/13/2012 11/13/2017 Common Stock, $0.001 par value per share 25,000 25,000 ( 5 ) D Stock Option (right to buy) $ 0.29 06/02/2015 M 25,000 ( 2 ) 01/06/2022 Common Stock, $0.001 par value per share 30,000 $ 0 5,000 ( 2 ) D Stock Option (right to buy) $ 0.28 06/02/2015 M 15,000 ( 6 ) 11/21/2021 Common Stock, $0.001 par value per share 30,000 $ 0 15,000 ( 6 ) D Warrant (right to purchase Common Stock) $ 3.475 ( 7 ) 04/30/2015( 8 ) Common Stock, $0.001 par value per share 4,884 0 D Stock Option (right to buy) $ 5.62 ( 2 ) 03/01/2025 Common Stock, $0.001 par value per share 50,000 50,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Duffy Matthew C/O CORMEDIX INC. 1430 US HIGHWAY 206, SUITE 200 BEDMINSTER, NJUS 07921 X Signatures Alexander M. Donaldson, with a Power of Attorney for Matthew P. Duffy 06/04/2015 Signature of Reporting Person Date

Explanation of Responses:

( 1 )These options vested 100% on January 10, 2014. ( 2 )These options vest in full on the first anniversary of the date of grant. ( 3 )These options vest quarterly over two years. ( 4 )These options vest as follows: (a) fifty percent (50%) on the date of issuance of the CE Mark certification for Neutrolin in Europe, which occurred on July 5, 2013, and (b) fifty percent (50%) on December 31, 2013. ( 5 )On November 13, 2012, the reporting person acquired in a private placement $10,000 of (a) 9% Senior Convertible Notes, convertible into shares of the Company's common stock at a conversion price of $0.35 per share, and (b) a five-year redeemable warrant to purchase common stock at an exercise price of $0.40 per share. ( 6 )The options vest ratably, one-third of which will vest on each of the grant date, the first anniversary and the second anniversary thereof. ( 7 )The warrants were issued as part of the Company's initia l public offering in March 2010 and were exercisable beginning six months after the effective date of the Company's registration statement related thereto. ( 8 )The expiration date was originally 3/24/2015 and was extended to 4/30/2015.

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).

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