Company: OPGN
Filing Date: 2025-08-14
Form Type: NT 10-Q
Source: 0001829126-25-006327
Chunk: 0

Company: OPGEN INC
Filing Date: 2025-08-14
Form: NT 10-Q
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 12b-25

NOTIFICATION OF LATE FILING</div>

Nothing in this form shall be construed to imply that the Commission has verified any information contained herein.

If the notification relates to a portion of the filing checked above, identify the Item(s) to which the notification relates:

PART I - REGISTRANT INFORMATION

<div align='center'>OpGen, Inc.

Full Name of Registrant

Former Name if Applicable

23219 Stringtown Road, Suite 300

Address of Principal Executive Office (Street and Number)

Clarksburg, MD 20871

City, State and Zip Code</div>

PART II - RULES 12B-25(B) AND (C)

If the subject report could not be filed without unreasonable effort or expense and the registrant seeks relief pursuant to Rule 12b-(b), the following should be completed. (Check box, if appropriate)

| ☒   | -a                                                                                                                                                                                                                                                                                                                                                                                                       | The reasons described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense; |
| (b) | The subject annual report, semi-annual report, transition report on Form 10-K, Form 20-F, 11-K or Form N-SAR, or portion thereof will be filed on or before the fifteenth calendar day following the prescribed due date; or the subject quarterly report or transition report on Form 10-Q, or portion thereof will be filed on or before the fifth calendar day following the prescribed due date; and |                                                                                                                                     |
| (c) | The accountant’s statement or other exhibit required by Rule 12b-25(c) has been attached if applicable.                                                                                                                                                                                                                                                                                                  |                                                                                                                                     |

PART III - NARRATIVE

State below in reasonable detail the reasons why Forms 10-K, 20-F, 11-K, 10-Q, 10-D, N-CEN, N-CSR, or the transition report or portion thereof, could not be filed within the prescribed time period.

OpGen, Inc. (the “Company”) is filing
this Notification of Late Filing on Form 12b-25 with respect to its Quarterly Report on Form 10-Q for the quarter ended June 30, 2025
(the “Form 10-Q”). The Company has determined that it is unable to file its Form 10-Q within the