Sec Form 3 Filing - Muir Kevin @ DELCATH SYSTEMS, INC. - 2022-05-04

FORM 3 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 Muir Kevin 2. Issuer Name and Ticker or Trading Symbol DELCATH SYSTEMS, INC. [ DCTH] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) See Remarks (Last) (First) (Middle) C/O DELCATH SYSTEMS, INC.,, 1633 BROADWAY, SUITE 22C 3. Date of Earliest Transaction (MM/DD/YY) 05/04/2022 (Street) NEW YORK, NY10019 4. If Amendment, Date Original Filed (MM/DD/YY) 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

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) $ 15.32 ( 1 ) 12/07/2030 Common Stock 30,000 D Stock Option (Right to Buy) $ 10.16 ( 2 ) 08/05/2031 Common Stock 40,000 D Stock Option (Right to Buy) $ 7.14 ( 3 ) 02/08/2032 Common Stock 38,499 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Muir Kevin C/O DELCATH SYSTEMS, INC., 1633 BROADWAY, SUITE 22C NEW YORK, NY10019 See Remarks Signatures KEVIN MUIR 05/16/2022 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The option vests and becomes exercisable as follows: 10,000 shares on December 1, 2021, and the remaining 20,000 shares vest and become exercisable in 24 equal monthly installments starting on January 1, 2022 and monthly thereafter, for so long as the reporting person remains an employee of the issuer (and subject to the terms and conditions of the Delcath Systems, Inc. 2020 Omnibus Equity Incentive Plan). ( 2 )The option immediately vested with respect to four-thirty-sixths (4/36ths) of the option shares and the remaining option shares will vest and become exercisable at the rate of one-thirty-sixth (1/36th) per month on the first day of each month for the next thirty-two months, starting on September 1, 2021, for so long as the reporting person remains an employee of the issuer (and subject to the terms and conditions of the Delcath Systems, Inc. 2020 Omnibus Equity Incentive Plan). ( 3 )The option shares will vest and become exercisable in equal monthly installments over the 36-month period beginning on the grant date (1/36th will vest on the first day of each month during said 36-month period, with the first vesting date being March 1, 2022) for so long as the reporting person remains an employee of the issuer (and subject to the terms and conditions of the Delcath Systems, Inc. 2020 Omnibus Equity Incentive Plan).

Remarks: Vice President Commercial OperationsExhibit List:Exhibit 24 - Power of Attorney

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