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
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Schacht Oliver
2. Issuer Name and Ticker or Trading Symbol

OPGEN INC [ OPGN ]
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__X__ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
Chief Executive Officer
(Last)          (First)          (Middle)

C/O OPGEN, INC. 708 QUINCE ORCHARD ROAD, SUITE 205
3. Date of Earliest Transaction (MM/DD/YYYY)

3/3/2021
(Street)

GAITHERSBURG, MD 20878
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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 Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security3. Trans. Date3A. Deemed Execution Date, if any4. Trans. Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
6. Date Exercisable and Expiration Date7. Title and Amount of Securities Underlying Derivative Security
(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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option Awards $1.91 (1)3/3/2021  A   77500     (2)3/3/2031 Common Stock 77500 $0.00 77500 D  
Restricted Stock Units  (3)3/3/2021  A   77500     (4) (4)Common Stock 77500 $0.00 77500 D  

Explanation of Responses:
(1) The exercise price is based on the closing price for shares of OpGen common stock on the date of grant.
(2) Stock option granted under the terms and provisions of the OpGen 2015 Equity Incentive Plan. The stock option vests in two equal annual installments beginning on March 3, 2022.
(3) Each restricted stock unit ("RSU") represents a contingent right to receive one share of OpGen common stock.
(4) RSUs granted on March 3, 2021 pursuant to the OpGen 2015 Equity Incentive Plan.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Schacht Oliver
C/O OPGEN, INC. 708 QUINCE ORCHARD ROAD
SUITE 205
GAITHERSBURG, MD 20878
X
Chief Executive Officer

Signatures
/s/ Oliver Schacht3/5/2021
**Signature of Reporting PersonDate

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