Sec Form 3 Filing - Fernandes Prabhavathi @ OPGEN INC - 2020-04-01

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

OMB APPROVAL OMB Number: 3235-0287 Expires: November 30, 2011 Estimated average burden hours per response... 0.5

1. Name and Address of Reporting Person Fernandes Prabhavathi 2. Issuer Name and Ticker or Trading Symbol OPGEN INC [ OPGN,OPGNW] 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 OPGEN, INC. 708 QUINCE ORCHARD ROAD, SUITE 205 3. Date of Earliest Transaction (MM/DD/YY) 04/01/2020 (Street) GAITHERSBURG, MD20878 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 Nonqualified Stock Option (Right to Buy) $ 56.38 ( 1 )( 2 ) 06/16/2026 Common Stock 1,439 D Nonqualified Stock Option (Right to Buy) $ 52.78 ( 1 )( 3 ) 06/16/2026 Common Stock 959 D Nonqualified Stock Option (Right to Buy) $ 8.57 ( 1 )( 4 ) 06/16/2026 Common Stock 959 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Fernandes Prabhavathi C/O OPGEN, INC. 708 QUINCE ORCHARD ROAD SUITE 205 GAITHERSBURG, MD20878 X Signatures /s/ Prabhavathi Fernandes 04/10/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )These options were originally granted pursuant to the Curetis Stock Option Plan 2016, as amended on July 19, 2018, which Plan was assumed by OpGen, Inc. (the "Company") as the Amended and Restated Stock Option Plan on April 1, 2020, upon the closing of the transactions contemplated by that certain Implementation Agreement, dated September 4, 2019, by and among the Company, Curetis N.V. and Crystal GmhH, and the stock options converted into options to acquire common stock of OpGen. ( 2 )This option was originally granted on July 1, 2016 and vested over a period of three (3) years with the first third (1/3) vesting on the first anniversary of the date of grant and the remaining two thirds (2/3) vesting in monthly increments over the following twenty-four (24) months. ( 3 )This option was originally granted on July 1, 2018 and vests over a period of three (3) years with the first third (1/3) vesting on the first anniversary of the date of grant and the remaining two thirds (2/3) vesting in monthly increments over the following twenty-four (24) months. ( 4 )This option was originally granted on July 1, 2019 and vests over a period of three (3) years with the first third (1/3) vesting on the first anniversary of the date of grant and the remaining two thirds (2/3) vesting in monthly increments over the following twenty-four (24) months.

Remarks: Exhibit List: Exhibit 24 - Power of Attorney

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).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.