The accompanying unaudited condensed consolidated financial statements have been
prepared on a going concern basis, which contemplates the realization of assets
and satisfaction of liabilities in the normal course of business. Since
inception, the Company has incurred, and continues to incur, significant losses
from operations. The Company has funded its operations primarily through
external investor financing arrangements and significant actions taken by the
Company, including the following:



On March 9, 2021, the Company entered into a Warrant Exercise Agreement (the
"Exercise Agreement") with the institutional investor (the "Holder") from our
2020 PIPE financing (see discussion below for a description of the 2020 PIPE).
Pursuant to the Exercise Agreement, in order to induce the Holder to exercise
all of the remaining 4,842,615 outstanding warrants (the "Existing Warrants")
for cash, pursuant to the terms of and subject to beneficial ownership
limitations contained in the Existing Warrants, the Company agreed to issue to
the Holder new warrants (the "New Warrants") to purchase 0.65 shares of common
stock for each share of common stock issued upon such exercise of the remaining
4,842,615 outstanding Existing Warrants pursuant to the Exercise Agreement or an
aggregate of 3,147,700 New Warrants. The terms of the New Warrants are
substantially similar to those of the Existing Warrants, except that the New
Warrants have an exercise price of $3.56. The New Warrants are immediately
exercisable and will expire five years from the date of the Exercise Agreement.
The Holder paid an aggregate of $255,751 to the Company for the purchase of the
New Warrants. The Company received aggregate gross proceeds before expenses of
approximately $9.65 million from the exercise of all of the remaining 4,842,615
outstanding Existing Warrants held by the Holder and the payment of the purchase
price for the New Warrants (together, the "2021 Warrant Exercise"). As
additional compensation, A.G.P./Alliance Global Partners will receive a cash fee
equal to $200,000 upon the cash exercise in full of the New Warrants.

                                       8

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On February 11, 2021, the Company closed a registered direct offering (the
"February 2021 Offering") with a single U.S.-based, healthcare-focused
institutional investor for the purchase of (i) 2,784,184 shares of common stock
and (ii) 5,549,149 pre-funded warrants, with each pre-funded warrant exercisable
for one share of common stock. The Company also issued to the investor, in a
concurrent private placement, unregistered common share purchase warrants to
purchase 4,166,666 shares of the Company's common stock. Each share of
common stock and accompanying common warrant were sold together at a combined
offering price of $3.00, and each pre-funded warrant and accompanying common
warrant were sold together at a combined offering price of $2.99. The pre-funded
warrants are immediately exercisable, at an exercise price of $0.01, and may be
exercised at any time until all of the pre-funded warrants are exercised in
full. The common warrants will have an exercise price of $3.55 per share, will
be exercisable commencing on the six-month anniversary of the date of issuance,
and will expire five and one-half (5.5) years from the date of issuance. The
February 2021 Offering raised aggregate net proceeds of $23.5 million, and gross
proceeds of $25.0 million. As of June 30, 2021, all 5,549,149 pre-funded
warrants issued in the February 2021 Offering have been exercised.



On November 25, 2020, the Company closed a private placement (the "2020 PIPE")
with one healthcare-focused U.S. institutional investor for the purchase of (i)
2,245,400 shares of common stock, (ii) 4,842,615 warrants to purchase shares of
common stock and (iii) 2,597,215 pre-funded warrants, with each pre-funded
warrant exercisable for one share of common stock. Each share of common stock
and accompanying common warrant were sold together at a combined offering price
of $2.065, and each pre-funded warrant and accompanying common warrant were sold
together at a combined offering price of $2.055. The common warrants have an
exercise price of $1.94 per share, and are exercisable commencing on the
six-month anniversary of the date of issuance, and will expire five and one-half
(5.5) years from the date of issuance. The 2020 PIPE raised aggregate net
proceeds of $9.3 million, and gross proceeds of $10.0 million. As of December
31, 2020, all 2,597,215 pre-funded warrants issued in the 2020 PIPE have been
exercised.

•

On February 11, 2020, the Company entered into an At the Market Common Offering
(the "ATM Agreement") with H.C. Wainwright & Co., LLC ("Wainwright"), which was
amended and restated on November 13, 2020 to add BTIG, LLC ("BTIG"), pursuant to
which the Company may offer and sell from time to time in an "at the market
offering", at its option, up to an aggregate of $22.1 million of shares of the
Company's common stock through the sales agents (the "2020 ATM Offering").
During the year ended December 31, 2020, the Company sold 7,521,610 shares of
its common stock under the 2020 ATM Offering resulting in aggregate net proceeds
to the Company of approximately $15.8 million, and gross proceeds of $16.7
million.

To meet its capital needs, the Company is considering multiple alternatives,
including, but not limited to, strategic financings or other transactions,
additional equity financings, debt financings and other funding transactions,
licensing and/or partnering arrangements. There can be no assurance that the
Company will be able to complete any such transaction on acceptable terms or
otherwise. The Company believes that current cash will be sufficient to fund
operations into the second quarter of 2022. This has led management to conclude
that substantial doubt about the Company's ability to continue as a going
concern exists. In the event the Company is unable to successfully raise
additional capital during or before the end of the second quarter of 2022, the
Company will not have sufficient cash flows and liquidity to finance its
business operations as currently contemplated. Accordingly, in such
circumstances, the Company would be compelled to immediately reduce general and
administrative expenses and delay research and development projects, pause or
abort clinical trials including the purchase of scientific equipment and
supplies, until it is able to obtain sufficient financing. If such sufficient
financing is not received on a timely basis, the Company would then need to
pursue a plan to license or sell its assets, seek to be acquired by another
entity, cease operations and/or seek bankruptcy protection.

Note 3 - Summary of Significant Accounting Policies

Basis of presentation and consolidation



The Company has prepared the accompanying unaudited condensed consolidated
financial statements pursuant to the rules and regulations of the Securities and
Exchange Commission (the "SEC") and the standards of accounting measurement set
forth in the Interim Reporting Topic of the Financial Accounting Standards Board
("FASB") Accounting Standards Codification ("ASC"). Certain information and note
disclosures normally included in annual financial statements prepared in
accordance with accounting principles generally accepted in the United States of
America ("GAAP") have been condensed or omitted, although the Company believes
that the disclosures made are adequate to make the information not misleading.
The Company recommends that the unaudited condensed consolidated financial
statements be read in conjunction with the audited consolidated financial
statements and the notes thereto included in the Company's latest Annual Report
on Form 10-K. In the opinion of management, all adjustments that are necessary
for a fair presentation of the Company's financial position for the periods
presented have been reflected. All adjustments are of a normal, recurring
nature, unless otherwise stated. The interim condensed consolidated results of
operations are not necessarily indicative of the results that may occur for the
full fiscal year. The December 31, 2020 consolidated balance sheet included
herein was derived from the audited consolidated financial statements, but does
not include all disclosures including notes required by GAAP for complete
financial statements.

The accompanying unaudited condensed consolidated financial statements include the accounts of OpGen and its wholly-owned subsidiaries as of June 30, 2021 including Curetis GmbH and subsidiaries acquired on April 1, 2020; all intercompany transactions and balances have been eliminated.


                                       9

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Foreign currency



The Company has subsidiaries located in Holzgerlingen, Germany; Vienna, Austria;
and Copenhagen, Denmark, each of which use currencies other than the U.S. dollar
as their functional currency. As a result, all assets and liabilities are
translated into U.S. dollars based on exchange rates at the end of the reporting
period. Income and expense items are translated at the average exchange rates
prevailing during the reporting period. Translation adjustments are reported in
accumulated other comprehensive income, a component of stockholders' equity.
Foreign currency translation adjustments are the sole component of accumulated
other comprehensive income at June 30, 2021 and December 31, 2020.

Foreign currency transaction gains and losses, excluding gains and losses on
intercompany balances where there is no current intent to settle such amounts in
the foreseeable future, are included in the determination of net loss. Unless
otherwise noted, all references to "$" or "dollar" refer to the United States
dollar.

Use of estimates

In preparing financial statements in conformity with GAAP, management is
required to make estimates and assumptions that affect the reported amounts of
assets and liabilities and the disclosure of contingent assets and liabilities
at the date of the financial statements and the reported amounts of revenues and
expenses during the reporting period. In the accompanying unaudited condensed
consolidated financial statements, estimates are used for, but not limited to,
liquidity assumptions, revenue recognition, inducement expense related to
warrant reprice, stock-based compensation, allowances for doubtful accounts and
inventory obsolescence, discount rates used to discount unpaid lease payments to
present values, valuation of derivative financial instruments measured at fair
value on a recurring basis, deferred tax assets and liabilities and related
valuation allowance, determining the fair value of assets acquired and
liabilities assumed in business combinations, the estimated useful lives of
long-lived assets, and the recoverability of long-lived assets. Actual results
could differ from those estimates.

Fair value of financial instruments



Financial instruments classified as current assets and liabilities (including
cash and cash equivalents, receivables, accounts payable, deferred revenue and
short-term notes) are carried at cost, which approximates fair value, because of
the short-term maturities of those instruments.

Cash and cash equivalents and restricted cash



The Company considers all highly liquid instruments with original maturities of
three months or less to be cash equivalents. The Company has cash and cash
equivalents deposited in financial institutions in which the balances exceed the
Federal Deposit Insurance Corporation ("FDIC") insured limit of $250,000. The
Company has not experienced any losses in such accounts and management believes
it is not exposed to any significant credit risk.

At June 30, 2021 and December 31, 2020, the Company had funds totaling $551,260
and $746,792, respectively, which are required as collateral for letters of
credit benefiting its landlords and for credit card processors. These funds are
reflected in other noncurrent assets on the accompanying unaudited condensed
consolidated balance sheets.

                                       10

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The following table provides a reconciliation of cash and cash equivalents and
restricted cash reported within the condensed consolidated balance sheets that
sum to the total of the same amounts shown in the condensed consolidated
statements of cash flows:

                                       December 31,
                    June 30, 2021          2020           June 30, 2020                       December 31, 2019
Cash and cash
equivalents       $    31,182,385     $  13,360,463     $    12,886,547     $  2,708,223
Restricted cash           551,260           746,792             291,420          185,380
Total cash and
cash
equivalents and
restricted cash
in the
condensed
consolidated
statements of
cash flows        $    31,733,645     $  14,107,255     $    13,177,967     $  2,893,603


Accounts receivable

The Company's accounts receivable result from revenues earned but not yet
collected from customers. Credit is extended based on an evaluation of a
customer's financial condition and, generally, collateral is not required.
Accounts receivable are due within 30 to 90 days and are stated at amounts due
from customers. The Company evaluates if an allowance is necessary by
considering a number of factors, including the length of time accounts
receivable are past due, the Company's previous loss history and the customer's
current ability to pay its obligation. If amounts become uncollectible, they are
charged to operations when that determination is made. The allowance for
doubtful accounts was $0 and $20,753 as of June 30, 2021 and December 31, 2020,
respectively.

At June 30, 2021, the Company had accounts receivable from three customers which
individually represented 50%, 16% and 13% of total accounts receivable,
respectively. At December 31, 2020, the Company had accounts receivable from one
customer which individually represented 20% of total accounts receivable. For
the three months ended June 30, 2021, revenue earned from two customers
represented 29% and 13% of total revenues, respectively. For the three months
ended June 30, 2020, revenue earned from one customer represented 38% of total
revenues. For the six months ended June 30, 2021, revenue earned from three
customers represented 21%, 13%, and 11% of total revenues, respectively. For the
six months ended June 30, 2020, revenue earned from two customers represented
22% and 14% of total revenues, respectively.

Inventory

Inventories are valued using the first-in, first-out method and stated at the lower of cost or net realizable value and consist of the following:



                             June 30, 2021     December 31, 2020
Raw materials and supplies  $       810,800   $           773,021
Work-in-process                      67,058                87,159
Finished goods                    3,451,458             2,312,148
Total                       $     4,329,316   $         3,172,328


Inventory includes Unyvero instrument systems, Unyvero cartridges, reagents and
components for Unyvero, Acuitas, QuickFISH and PNA FISH products, Curetis
SARS-CoV-2 test kits, and reagents and supplies used for the Company's
laboratory services. Inventory reserves for obsolescence and expirations were
$91,066 and $288,378 at June 30, 2021 and December 31, 2020, respectively.

The Company reviews inventory quantities on hand and analyzes the provision for
excess and obsolete inventory based primarily on product expiration dating and
its estimated sales forecast, which is based on sales history and anticipated
future demand. The Company's estimates of future product demand may not be
accurate, and it may understate or overstate the provision required for excess
and obsolete inventory. Accordingly, any significant unanticipated changes in
demand could have a significant impact on the value of the Company's inventory
and results of operations.

The Company classifies finished goods inventory it does not expect to sell or
use in clinical studies within 12 months of the unaudited condensed consolidated
balance sheets date as strategic inventory, a non-current asset.

                                       11

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Long-lived assets

Property and equipment



Property and equipment are reviewed for impairment whenever events or changes in
circumstances indicate that the carrying amount of an asset may not be
recoverable. Recoverability of assets to be held and used is measured by a
comparison of the carrying amount of an asset to future undiscounted net cash
flows expected to be generated by the asset. Recoverability measurement and
estimating of undiscounted cash flows is done at the lowest possible level for
which we can identify assets. If such assets are considered to be impaired,
impairment is recognized as the amount by which the carrying amount of assets
exceeds the fair value of the assets. During the three and six months ended June
30, 2021 and 2020, the Company determined that its property and equipment were
not impaired.

Leases

The Company determines if an arrangement is a lease at inception. For leases
where the Company is the lessee, right-of-use ("ROU") assets represent the
Company's right to use the underlying asset for the term of the lease and the
lease liabilities represent an obligation to make lease payments arising from
the lease. ROU assets and lease liabilities are recognized at the lease
commencement date based on the present value of the future lease payments over
the lease term. The Company uses its incremental borrowing rate based on the
information available at the commencement date of the underlying lease
arrangement to determine the present value of lease payments. The ROU asset also
includes any prepaid lease payments and any lease incentives received. The lease
term to calculate the ROU asset and related lease liability includes options to
extend or terminate the lease when it is reasonably certain that the Company
will exercise the option. The Company's lease agreements generally do not
contain any material variable lease payments, residual value guarantees or
restrictive covenants.

Lease expense for operating leases is recognized on a straight-line basis over
the lease term as an operating expense while expense for financing leases is
recognized as depreciation expense and interest expense using the effective
interest method of recognition. The Company has made certain accounting policy
elections whereby the Company (i) does not recognize ROU assets or lease
liabilities for short-term leases (those with original terms of 12 months or
less) and (ii) combines lease and non-lease elements of our operating leases.

ROU assets



ROU assets are reviewed for impairment whenever events or changes in
circumstances indicate that the carrying amount of an asset may not be
recoverable. Recoverability of assets to be held and used is measured by a
comparison of the carrying amount of an asset to future undiscounted net cash
flows expected to be generated by the asset. Recoverability measurement and
estimating of undiscounted cash flows is done at the lowest possible level for
which the Company can identify assets. If such assets are considered to be
impaired, impairment is recognized as the amount by which the carrying amount of
assets exceeds the fair value of the assets. During the three and six months
ended June 30, 2021, the Company determined that the ROU asset associated with
its San Diego, California office lease may not be recoverable. As a result, the
Company recorded an impairment charge of $115,218 and $ 170,714 during the three
and six months ended June 30, 2021, respectively.

Intangible assets and goodwill

Intangible assets and goodwill as of June 30, 2021 consist of finite-lived and indefinite-lived intangible assets and goodwill.


                                       12

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Finite-lived and indefinite-lived intangible assets

Intangible assets include trademarks, developed technology, In-Process Research & Development, software and customer relationships and consisted of the following as of June 30, 2021 and December 31, 2020:



                                                                  June 30, 2021                                                                       December 31, 2020
                                                                    Effect of                                                        Effect of
                                                                     Foreign                                                          Foreign
                                                  Accumulated       Exchange                        Accumulated                      Exchange
                 Subsidiary          Cost         Amortization        Rates        Net Balance      Amortization     Impairment        Rates                                     Net Balance
Trademarks
and
tradenames          AdvanDx     $    461,000     $          -     $         -     $          -     $   (217,413 )   $ (243,587 )   $         -     $          -
Developed
technology          AdvanDx          458,000                -               -                -         (308,526 )     (149,474 )             -                -
Customer
relationships       AdvanDx        1,094,000                -               -                -         (736,465 )     (357,535 )             -                -
Trademarks
and
tradenames          Curetis        1,768,000         (237,532 )       132,238        1,662,706         (147,161 )            -         194,119        1,814,958
Distributor
relationships       Curetis        2,362,000         (211,560 )       176,665        2,327,105         (131,070 )            -         259,336        2,490,266
A50 -
Developed
technology          Curetis          349,000          (66,991 )        26,104          308,113          (41,504 )            -          38,319          345,815
Ares -
Developed
technology          Curetis        5,333,000         (511,768 )       398,879        5,220,111         (317,060 )            -         585,536        5,601,476
A30 -
In-Process
Research &
Development         Curetis        5,706,000                -         438,289        6,144,289                -              -         622,448        6,328,448
                                $ 17,531,000     $ (1,027,851 )   $ 1,172,175     $ 15,662,324     $ (1,899,199 )   $ (750,596 )   $ 1,699,758     $ 16,580,963

Identifiable intangible assets will be amortized on a straight-line basis over their estimated useful lives. The estimated useful lives of the intangibles are:



                                                 Estimated Useful Life
Trademarks and tradenames                              10 years
Customer/distributor relationships                     15 years
A50 - Developed technology                              7 years
Ares - Developed technology                            14 years

A30 - Acquired in-process research & development Indefinite




Acquired IPR&D represents the fair value assigned to those research and
development projects that were acquired in a business combination for which the
related products have not received regulatory approval and have no alternative
future use. IPR&D is capitalized at its fair value as an indefinite-lived
intangible asset, and any development costs incurred after the acquisition are
expensed as incurred. Upon achieving regulatory approval or commercial viability
for the related product, the indefinite-lived intangible asset is accounted for
as a finite-lived asset and is amortized on a straight-line basis over its
estimated useful life. If the project is not completed or is terminated or
abandoned, the Company may have an impairment related to the IPR&D which is
charged to expense. Indefinite-lived intangible assets are tested for impairment
annually and whenever events or changes in circumstances indicate that the
carrying amount may be impaired. Impairment is calculated as the excess of the
asset's carrying value over its fair value.

The Company reviews the useful lives of intangible assets when events or changes
in circumstances occur which may potentially impact the estimated useful life of
the intangible assets.

                                       13

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Total amortization expense of intangible assets was $204,800 and $192,709 for
the three months ended June 30, 2021 and 2020, respectively. Total amortization
expense of intangible assets was $402,642 and $259,663 for the six months ended
June 30, 2021 and 2020, respectively. Expected future amortization of intangible
assets is as follows:

Year Ending December 31,
2021 (Six months)          $   411,139
2022                           822,278
2023                           822,278
2024                           822,278
2025                           822,278
2026                           822,278
Thereafter                   4,995,506
Total                      $ 9,518,035


Intangible assets are reviewed for impairment whenever events or changes in
circumstances indicate that the carrying amount of the asset may not be
recoverable. If any indicators were present, the Company would test for
recoverability by comparing the carrying amount of the asset to the net
undiscounted cash flows expected to be generated from the asset. If those net
undiscounted cash flows do not exceed the carrying amount (i.e., the asset is
not recoverable), the Company would perform the next step, which is to determine
the fair value of the asset and record an impairment loss, if any.

In accordance with ASC 360-10, Property, Plant and Equipment, the Company
records impairment losses on long-lived assets used in operations when events
and circumstances indicate that long-lived assets might be impaired and the
undiscounted cash flows estimated to be generated by those assets are less than
the carrying amounts of those assets. During the six months ended June 30, 2021,
the Company determined that its finite-lived intangible assets were not
impaired. During the six months ended June 30, 2020, events and circumstances
indicated the Company's FISH intangible assets might be impaired. These
circumstances included decreased product sales related to the COVID-19 pandemic
and the loss of significant customers. Management's updated estimate of
undiscounted cash flows indicated that such carrying amounts were no longer
expected to be recovered and that the FISH intangible assets were impaired. The
Company's analysis determined that the fair value of the assets was $0 and the
Company recorded an impairment loss of $750,596.

Goodwill

Goodwill represents the excess of the purchase price paid when the Company
acquired AdvanDx, Inc. in July 2015 and Curetis in April 2020, over the fair
values of the acquired tangible or intangible assets and assumed liabilities.
Goodwill is not tax deductible in any relevant jurisdictions. The Company's
goodwill balance as of June 30, 2021 and December 31, 2020 was $7,790,595 and
$8,024,729, respectively.

The changes in the carrying amount of goodwill as of June 30, 2021, and since December 31, 2020, were as follows:



Balance as of December 31, 2020   $ 8,024,729
Changes in currency translation      (234,134 )
Balance as of June 30, 2021       $ 7,790,595


The Company conducts an impairment test of goodwill on an annual basis, and will
also conduct tests if events occur or circumstances change that would, more
likely than not, reduce the Company's fair value below its net equity value.
During the six months ended June 30, 2021 and 2020, the Company determined that
its goodwill was not impaired.

Revenue recognition

The Company derives revenues from (i) the sale of QuickFISH and PNA FISH diagnostic test products, Unyvero Application cartridges, Unyvero Systems, SARS-CoV-2 tests, Acuitas AMR Gene Panel (Isolates) RUO test products, (ii) providing laboratory services, and (iii) providing collaboration services including funded software arrangements, and license arrangements.



The Company analyzes contracts to determine the appropriate revenue recognition
using the following steps: (i) identification of contracts with customers, (ii)
identification of distinct performance obligations in the contract, (iii)
determination of contract transaction price, (iv) allocation of contract
transaction price to the performance obligations and (v) determination of
revenue recognition based on timing of satisfaction of the performance
obligation.

                                       14

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The Company recognizes revenues upon the satisfaction of its performance obligation (upon transfer of control of promised goods or services to our customers) in an amount that reflects the consideration to which it expects to be entitled in exchange for those goods or services.



The Company defers incremental costs of obtaining a customer contract and
amortizes the deferred costs over the period that the goods and services are
transferred to the customer. The Company had no material incremental costs to
obtain customer contracts in any period presented.

Deferred revenue results from amounts billed in advance to customers or cash received from customers in advance of services being provided.

Research and development costs

Research and development costs are expensed as incurred. Research and development costs primarily consist of salaries and related expenses for personnel, other resources, laboratory supplies, and fees paid to consultants and outside service partners.

Government grant agreements and research incentives



From time to time, the Company may enter into arrangements with governmental
entities for the purposes of obtaining funding for research and development
activities. The Company recognizes funding from grants and research incentives
received from Austrian government agencies in the condensed consolidated
statements of operations and comprehensive loss in the period during which the
related qualifying expenses are incurred, provided that the conditions under
which the grants or incentives were provided have been met. For grants under
funding agreements and for proceeds under research incentive programs, the
Company recognizes grant and incentive income in an amount equal to the
estimated qualifying expenses incurred in each period multiplied by the
applicable reimbursement percentage. The Company classifies government grants
received under these arrangements as a reduction to the related research and
development expense incurred. The Company analyzes each arrangement on a
case-by-case basis. For the three months ended June 30, 2021, the Company
recognized $154,850 as a reduction of research and development expense related
to government grant arrangements. For the six months ended June 30, 2021, the
Company recognized $374,072 as a reduction of research and development expense
related to government grant arrangements. There were no grant proceeds
recognized for the three and six months ended June 30, 2020. The Company had
earned but not yet received $727,659 and $413,530 related to these agreements
and incentives included in prepaid expenses and other current assets, as of June
30, 2021 and December 31, 2020, respectively.

Stock-based compensation



Stock-based compensation expense is recognized at fair value. The fair value of
stock-based compensation to employees and directors is estimated, on the date of
grant, using the Black-Scholes model. The resulting fair value is recognized
ratably over the requisite service period, which is generally the vesting period
of the option. For all time-vesting awards granted, expense is amortized using
the straight-line attribution method. The Company accounts for forfeitures as
they occur.

Option valuation models, including the Black-Scholes model, require the input of highly subjective assumptions, and changes in the assumptions used can materially affect the grant-date fair value of an award. These assumptions include the risk-free rate of interest, expected dividend yield, expected volatility and the expected life of the award.


                                       15

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Income taxes



Income taxes are accounted for under the asset and liability method. Deferred
tax assets and liabilities are recognized for the expected future tax
consequences attributable to temporary differences between financial statement
carrying amounts of existing assets and liabilities and their respective tax
basis. Deferred tax assets and liabilities are measured using enacted tax rates
expected to apply to taxable income in the years in which those temporary
differences are expected to be recovered or settled. The effect on deferred tax
assets and liabilities of a change in tax rates is recognized in income in the
period that includes the enactment date. A valuation allowance is established
when necessary to reduce deferred income tax assets to the amount expected to be
realized.

Tax benefits are initially recognized in the condensed consolidated financial
statements when it is more likely than not that the position will be sustained
upon examination by the tax authorities. Such tax positions are initially, and
subsequently, measured as the largest amount of tax benefit that is greater than
50% likely of being realized upon ultimate settlement with the tax authority,
assuming full knowledge of the position and all relevant facts.

The Company had federal net operating loss ("NOL") carryforwards of $196,511,928
and $188,282,298 at December 31, 2020 and 2019, respectively. Despite the NOL
carryforwards, which begin to expire in 2022, the Company may have state tax
requirements. Also, use of the NOL carryforwards may be subject to an annual
limitation as provided by Section 382 of the Internal Revenue Code of 1986, as
amended (the "Code"). To date, the Company has not performed a formal study to
determine if any of its remaining NOL and credit attributes might be further
limited due to the ownership change rules of Section 382 or Section 383 of the
Code. The Company will continue to monitor this matter going forward. There can
be no assurance that the NOL carryforwards will ever be fully utilized.

The Company also has foreign NOL carryforwards of $160,540,528 at December 31,
2020 from its foreign subsidiaries. $138,576,755 of those foreign NOL
carryforwards are from the Company's operations in Germany. Despite the NOL
carryforwards, the Company may have a current and future tax liability due to
the nuances of German tax law around the use of NOL's within a consolidated
group. There is no assurance that these foreign NOL carryforwards will ever be
fully utilized.

Loss per share

Basic loss per share is computed by dividing net loss available to common stockholders by the weighted average number of shares of common stock outstanding during the period.



For periods of net income, and when the effects are not anti-dilutive, diluted
earnings per share is computed by dividing net income available to common
stockholders by the weighted average number of shares outstanding plus the
impact of all potential dilutive common shares, consisting primarily of common
stock options and stock purchase warrants using the treasury stock method, and
convertible preferred stock and convertible debt using the if-converted method.

For periods of net loss, diluted loss per share is calculated similarly to basic
loss per share because the impact of all dilutive potential common shares is
anti-dilutive. The number of anti-dilutive shares, consisting of (i) common
stock options, (ii) stock purchase warrants, and (iii) restricted stock units
representing the right to acquire shares of common stock which have been
excluded from the computation of diluted loss per share, was 11.0 million shares
and 1.1 million shares as of June 30, 2021 and 2020, respectively.

Adopted accounting pronouncements



In December 2019, the FASB issued ASU No. 2019-12, Simplifying the Accounting
for Income Taxes, which removes certain exceptions related to the approach for
intra-period tax allocation, the methodology for calculating income taxes in an
interim period, the recognition of deferred tax liabilities for outside basis
differences and clarifies the accounting for transactions that result in a
step-up in the tax basis of goodwill. The Company adopted ASU 2019-12 on January
1, 2021. The impact of adopting ASU 2019-12 did not have a material impact on
the Company's condensed consolidated financial statements.

In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848):
Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The
new guidance under ASU 2020-04 provides optional expedients and exceptions for
applying GAAP to contracts, hedging relationships and other transactions
affected by reference rate reform if certain criteria are met. The amendments
apply only to contracts and hedging relationships that reference LIBOR or
another reference rate expected to be discontinued due to reference rate reform.
These amendments are effective immediately and may be applied prospectively to
contract modifications made and hedging relationships entered into or evaluated
on or before December 31, 2022. The impact of adopting ASU 2020-04 did not have
a material impact on the Company's condensed consolidated financial statements.

                                       16

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Recently issued accounting standards



The Company has evaluated all other issued and unadopted ASUs and believes the
adoption of these standards will not have a material impact on its results of
operations, financial position or cash flows.

Note 4 - Business Combination



On April 1, 2020, the Company completed its business combination transaction
with Curetis N.V., a public company with limited liability under the laws of the
Netherlands, as contemplated by the Implementation Agreement, dated as of
September 4, 2019, by and among the Company, the Seller, and Crystal GmbH, a
private limited liability company organized under the laws of the Federal
Republic of Germany and wholly-owned subsidiary of the Company. Pursuant to the
Implementation Agreement, the Purchaser acquired all of the shares of Curetis
GmbH, a private limited liability company organized under the laws of the
Federal Republic of Germany, and certain other assets and liabilities of the
Seller, as further described below, and paid, as the sole consideration,
2,028,208 shares of the Company's common stock to the Seller, and reserved for
future issuance (a) 134,356 shares of Common Stock, in connection with its
assumption of the Seller's 2016 Stock Option Plan, as amended (the "Seller Stock
Option Plan"), and the outstanding awards thereunder, and (b) 500,000 shares of
common stock to be issued upon the conversion, if any, of certain convertible
notes issued by the Seller.

At the closing, the Company assumed all of the liabilities of the Seller solely
and exclusively related to the acquired business, which is providing innovative
solutions, through development of proprietary platforms, diagnostic content,
applied bioinformatics, lab services, research services and commercial
collaborations and agreements, for molecular microbiology, diagnostics designed
to address the global challenge of detecting severe infectious diseases and
identifying antibiotic resistances in hospitalized patients. Pursuant to the
Implementation Agreement, the Company also assumed and adopted the Seller Stock
Option Plan as an Amended and Restated Stock Option Plan of the Company. In
connection with the foregoing, the Company assumed all awards thereunder that
were outstanding as of the Closing Date and converted such awards into options
to purchase shares of the Company's Common Stock pursuant to the terms of the
applicable award. In addition, the Company assumed, at the closing, all of the
outstanding convertible notes issued by Seller in favor of YA II PN, LTD,
pursuant to the previously disclosed Assignment of the Agreement for the
Issuance of and Subscription to Notes Convertible into Shares, dated February
24, 2020, and entered into pursuant to the Implementation Agreement.

Curetis' assets and liabilities were measured and recognized at their fair
values as of the transaction date and combined with the assets, liabilities, and
results of operations of OpGen after the consummation of the business
combination. The allocation of the purchase price to acquired assets and assumed
liabilities based on their underlying fair values requires the extensive use of
significant estimates and management's judgment. The allocation of the purchase
price is final at this time.

                                       17

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The components of the purchase price and net assets acquired are as follows:

Purchase Price



Number of shares issued to Curetis
N.V                                   2,028,208
Multiplied by the market value per
share of OpGen's common stock
(i)                                $       2.39
Total fair value of common stock
issued to Curetis N.V shareholders    4,847,417
Fair value of replacement stock
awards related to precombination
service (ii)                            136,912
Fair value of convertible notes
assumed (iii)                         1,323,750
Fair value of EIB debt assumed
(iv)                                 15,784,892
Funds advanced to Curetis GmbH
under Interim Facility                4,808,712
Cash and cash equivalents and
restricted cash acquired             (1,266,849 )
                                   $ 25,634,834

(i) The price per share of OpGen's common stock was based on the closing price

as reported on the Nasdaq Capital Market on April 1, 2020.

(ii) The fair value of the stock options assumed was determined using the

Black-Scholes option pricing model.

(iii) To derive the fair value of the convertible notes, the Company estimated the

fair value of the convertible notes with and without the derivative

liability using a scenario analysis and Monte Carlo simulation.

(iv) The fair value of the EIB debt is determined using a discounted cash flow

analysis with current applicable rates for similar instruments.




Net Assets Acquired

Assets acquired
Receivables                                    $    482,876
Inventory                                         2,022,577
Property and equipment                            3,802,431
Right of use assets                               1,090,812
Other current assets                                925,364
Finite-lived intangible assets
Trade names/trademarks                            1,768,000
Customer/distributor relationships                2,362,000
A50 - Developed technology                          349,000
Ares - Developed technology                       5,333,000
Indefinite-lived intangible assets
A30 - In-process research & development           5,706,000
Goodwill                                          6,688,652
Liabilities assumed
Accounts payable                                 (1,168,839 )
Accrued expenses and other current liabilities   (1,953,927 )
Derivative liabilities                             (615,831 )
Lease liabilities                                (1,108,193 )
Other long-term liabilities                         (49,088 )
Net assets acquired                            $ 25,634,834


                                       18

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The fair value of identifiable intangible assets has been determined using the
income approach, which involves significant unobservable inputs (Level 3
inputs). These inputs include projected sales, margin, required rate of return
and tax rate, as well as an estimated royalty rate in the case of the trade
names/trademarks intangibles. The trade names/trademarks intangibles are valued
using a relief-from-royalty method. The customer/distributor relationships are
valued using the with and without method. The developed technology intangibles
are valued using a multi-period earnings method.

The Company determined the fair value of an IPR&D asset resulting from the
acquisition of Curetis using the multi-period earnings method under the income
approach. This method reflects the present value of the projected cash flows
that are expected to be generated by the IPR&D, less charges representing the
required return on other assets to sustain those cash flows.

The weighted-average amortization periods for finite-lived intangible assets acquired are 15 years for customer/distributor relationships, 10 years for developed technology and 10 years for trade names/trademarks.



The total consideration paid in the acquisition exceeded the estimated fair
value of the tangible and identifiable intangible assets acquired and
liabilities assumed, resulting in approximately $6.7 million of goodwill.
Goodwill, primarily related to expected synergies gained from combining
operations, sales growth from future product offerings and customers, together
with certain intangible assets that do not qualify for separate recognition,
including assembled workforce, is not tax deductible in all relevant taxing
jurisdictions.

The following unaudited pro forma financial information summarizes the results
of operations for the periods indicated as if the Transaction had been completed
as of January 1, 2020. Pro forma information primarily reflects adjustments
relating to the amortization of intangibles acquired and elimination of interest
expense due under the interim facility. The pro forma amounts do not purport to
be indicative of the results that would have actually been obtained if the
acquisition had occurred as of January 1, 2020 or that may be obtained in the
future.

                               Six months ended
Unaudited pro forma results     June 30, 2020
Revenues                      $        2,835,532
Net loss                             (14,734,370 )
Net loss per share                         (1.29 )

Note 5 - Revenue from contracts with customers

Disaggregated revenue



The Company provides diagnostic test products, laboratory services to hospitals,
clinical laboratories and other healthcare provider customers, and enters into
collaboration agreements with government agencies and healthcare providers. The
revenues by type of service consist of the following:

                                 Three Months Ended June 30,            Six Months Ended June 30,
                                     2021             2020              2021                  2020
Product sales                   $      307,804     $   601,304     $       835,383         $   968,237
Laboratory services                    266,784          25,992             450,849              25,992
Collaboration revenue                  237,027         561,089             355,099             811,089
Total revenue                   $      811,615     $ 1,188,385     $     1,641,331         $ 1,805,318

Revenues by geography are as follows:



                    Three Months Ended June 30,            Six Months Ended June 30,
                    2021                    2020            2021                 2020
Domestic       $      305,617            $   302,676   $       649,624        $   893,125
International         505,998                885,709           991,707            912,193
Total revenue  $      811,615            $ 1,188,385   $     1,641,331        $ 1,805,318


                                       19

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Deferred revenue

Changes in deferred revenue for the period were as follows:



Balance at December 31, 2020                                    $  9,808

New deferrals, net of amounts recognized in the current period - Amounts returned to customers

                                     (9,808 )
Effect of foreign exchange rates                                       -
Balance at June 30, 2021                                        $      -


Contract assets

The Company did not have any contract assets as of June 30, 2021, which are
generated when contractual billing schedules differ from revenue recognition
timing. The Company had approximately $18,000 of contract assets as of December
31, 2020. Contract assets represent a conditional right to consideration for
satisfied performance obligations that becomes a billed receivable when the
conditions are satisfied.

Unsatisfied performance obligations

The Company had no unsatisfied performance obligations related to its contracts with customers at June 30, 2021 and December 31, 2020.

Note 6 - Fair value measurements

The Company classifies its financial instruments using a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include:

Level 1 - defined as observable inputs such as quoted prices in active markets;

Level 2 - defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and

Level 3 - defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions such as expected revenue growth and discount factors applied to cash flow projections.

For the six months ended June 30, 2021, the Company has not transferred any assets between fair value measurement levels.

Financial assets and liabilities measured at fair value on a recurring basis



The Company evaluates financial assets and liabilities subject to fair value
measurements on a recurring basis to determine the appropriate level at which to
classify them each reporting period. This determination requires the Company to
make subjective judgments as to the significance of inputs used in determining
fair value and where such inputs lie within the hierarchy.

In June 2019, Curetis drew down a third tranche of EUR 5.0 million from the EIB
("European Investment Bank"). In return for EIB waiving the condition precedent
of a minimum cumulative equity capital raised of EUR 15 million to disburse this
EUR 5.0 million tranche, the parties agreed on a 2.1% participation percentage
interest ("PPI"). Upon maturity of the tranche, EIB would be entitled to an
additional payment that is equity-linked and equivalent to 2.1% of the then
total valuation of Curetis N.V. On July 9, 2020, the Company negotiated an
amendment to the EIB debt financing facility. As part of the amendment, the
parties adjusted the PPI percentage applicable to the previous EIB tranche of
EUR 5.0 million, which was funded in June 2019 from its original 2.1% PPI in
Curetis N.V.'s equity value upon maturity to a new 0.3% PPI in OpGen's
equity value upon maturity between mid-2024 and mid-2025. This right constitutes
an embedded derivative, which is separated and measured at fair value with
changes being accounted for through profit or loss. The Company determines the
fair value of the derivative using a Monte Carlo simulation model. Using this
model, level 3 unobservable inputs include estimated discount rates and
estimated risk-free interest rates.

                                       20

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The fair value of level 3 liabilities measured at fair value on a recurring basis for the three months ended June 30, 2021 was as follows:



                                                      Effect of
                    Balance at                         Foreign       Balance at
                   December 31,       Change in       Exchange        June 30,
Description            2020          Fair Value         Rates           2021
Participation
percentage
interest
liability         $      112,852     $   114,411     $    (4,876 )   $   222,387
Total             $      112,852     $   114,411     $    (4,876 )   $   222,387

Financial assets and liabilities carried at fair value on a non-recurring basis

The Company does not have any financial assets and liabilities measured at fair value on a non-recurring basis.

Non-financial assets and liabilities carried at fair value on a recurring basis

The Company does not have any non-financial assets and liabilities measured at fair value on a recurring basis.

Non-financial assets and liabilities carried at fair value on a non-recurring basis



The Company measures its long-lived assets, including property and equipment and
intangible assets (including goodwill), at fair value on a non-recurring basis
when a triggering event requires such evaluation. During the three months ended
June 30, 2021, the Company recorded impairment expense of $115,218 related to
its ROU assets. During the six months ended June 30, 2021, the Company recorded
impairment expense of $170,714 related to its ROU assets. During the three and
six months ended June 30, 2020, the Company recorded impairment expense of $0
and $750,596 related to its intangible assets, respectively (see Note 3).

Note 7 - Debt

The following table summarizes the Company's long-term debt and short-term borrowings as of June 30, 2021 and December 31, 2020:



                            June 30, 2021      December 31, 2020
EIB                        $    25,754,951    $       25,936,928
PPP                                      -               259,353
MGHIF                                    -               331,904
Insurance financings                     -               107,742
Total debt obligations          25,754,951            26,635,927
Unamortized debt discount       (5,084,010 )          (6,557,992 )
Carrying value of debt          20,670,941            20,077,935
Less current portion                     -              (699,000 )
Long-term debt             $    20,670,941    $       19,378,935


MGHIF financing

In July 2015, the Company entered into a Purchase Agreement with MGHIF, pursuant
to which MGHIF purchased 2,273 shares of common stock of the Company at $2,200
per share for gross proceeds of $5.0 million. Pursuant to the Purchase
Agreement, the Company also issued to MGHIF an 8% Senior Secured Promissory Note
(the "MGHIF Note") in the principal amount of $1.0 million with a two-year
maturity date from the date of issuance. The Company's obligations under the
MGHIF Note were secured by a lien on all of OpGen's assets excluding the assets
of Curetis GmbH, Curetis USA, and Ares Genetics.

On June 28, 2017, the MGHIF Note was amended and restated, and the maturity date
of the MGHIF Note was extended by one year to July 14, 2018. As consideration
for the agreement to extend the maturity date, the Company issued an amended and
restated secured promissory note to MGHIF that (1) increased the interest rate
to ten percent (10%) per annum and (2) provided for the issuance of common stock
warrants to purchase 656 shares of its common stock to MGHIF.

On June 11, 2018, the Company executed an Allonge to the MGHIF Note. The Allonge
provided that accrued and unpaid interest of $285,512 due as of July 14, 2018,
the original maturity date, be paid through the issuance of shares of OpGen's
common stock in a private placement transaction. In addition, the Allonge
revised and extended the maturity date for payment of the MGHIF Note to six
semi-annual payments of $166,667 plus accrued and unpaid interest beginning on
January 2, 2019. During the six months ended June 30, 2021, the Company made the
final payment under the MGHIF Note and the lien on the Company's assets was
released.

                                       21

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Yorkville Convertible Notes



The Company agreed to assume, as a condition to closing the business combination
with Curetis, all of the outstanding convertible notes (the "Convertible Notes")
issued by Curetis N.V. in favor of YA II PN, LTD ("Yorkville"), pursuant to that
certain Agreement for the Issuance of and Subscription to Notes Convertible into
Shares and Share Subscription Warrants, dated October 2, 2018, by and between
Curetis N.V. and Yorkville.

On February 24, 2020, the Company entered into an Assignment of the Agreement
for the Issuance of and Subscription to Notes Convertible into Shares (the
"Assignment Agreement") with Curetis N.V. and Yorkville. Pursuant to the
Assignment Agreement, upon assumption of the Convertible Notes by the Company,
the Convertible Notes ceased to be convertible into shares of Curetis N.V. and
are instead convertible into shares of the Company's common stock, par value
$0.01. The Assignment Agreement provided that an amount of 500,000 shares of the
Company's common stock that comprise a portion of the consideration payable by
the Company under the Implementation Agreement be reserved for issuance under
the Convertible Notes. On June 17, 2020, the Company registered for resale an
additional 450,000 shares of Company common stock issuable upon conversion of
the Convertible Notes.

At closing of the Transaction, an aggregate amount of €1.3 million of
unconverted Convertible Notes was assumed by the Company. The Convertible Notes
were measured and recognized at fair value at the acquisition date. The fair
value of the Convertible Notes as of the closing of the Transaction was
approximately $1.3 million. The resulting debt discount was amortized over the
life of the Convertible Notes as an increase in interest expense. During year
ended December 31, 2020, the Company issued 763,905 shares of common stock in
satisfaction of approximately $1,451,000 of Convertible Notes. As of December
31, 2020, all notes have been converted.

EIB Loan Facility



In 2016, Curetis entered into a contract for an up to €25 million senior,
unsecured loan financing facility from the European Investment Bank ("EIB"). The
financing is in the first growth capital loan under the European Growth Finance
Facility ("EGFF"), launched in November 2016. It is backed by a guarantee from
the European Fund for Strategic Investment ("EFSI"). EFSI is an essential pillar
of the Investment Plan for Europe ("IPE"), under which the EIB and the European
Commission are working as strategic partners to support investments and bring
back jobs and growth to Europe.

The funding can be drawn in up to five tranches within 36 months, under the EIB amendment, and each tranche is to be repaid upon maturity five years after draw-down.



In April 2017, Curetis drew down a first tranche of €10 million from this
facility. This tranche has a floating interest rate of EURIBOR plus 4% payable
after each 12-month-period from the draw-down-date and another additional 6%
interest per annum that is deferred and payable at maturity together with the
principal. In June 2018, another tranche of €3 million was drawn down. The terms
and conditions are analogous to the first one.

In June 2019, Curetis drew down a third tranche of €5 million from the EIB. In
line with all prior tranches, the majority of interest is also deferred into the
bullet repayment structure upon maturity. In return for EIB waiving the
condition precedent of a minimum cumulative equity capital raised of €15 million
to disburse this €5 million tranche, the parties agreed on a 2.1% PPI. Upon
maturity of the tranche, not before approximately mid-2024 (and no later than
mid-2025) EIB would be entitled to an additional payment that is equity-linked
and equivalent to 2.1% of the then total valuation of Curetis N.V. As part of
the amendment between the Company and EIB on July 9, 2020, the parties adjusted
the PPI percentage applicable to the previous EIB tranche of €5 million, which
was funded in June 2019 from its original 2.1% PPI in Curetis N.V.'s equity
value upon maturity to a new 0.3% PPI in OpGen's equity value upon maturity.
This right constitutes an embedded derivative, which is separated and measured
at fair value with changes being accounted for through income or loss.

On July 10, 2020, EIB agreed to defer total interest payments of €720k due in
April and June 2020 under the first three tranches of the debt financing
facility until December 31, 2020. The Company made these interest payments in
December 2020.

The debt was measured and recognized at fair value as of the acquisition date.
The fair value of the EIB debt was approximately $15.8 million as of the
acquisition date. The resulting debt discount is being amortized over the life
of the EIB debt as an increase to interest expense.

As of June 30, 2021, the outstanding borrowings under all tranches were €21,671,955 (USD $25,754,951), including deferred interest payable at maturity of €3,671,955 (USD $4,363,751).


                                       22

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PPP



On April 22, 2020, the Company entered into a Term Note (the "Company Note")
with Silicon Valley Bank (the "Bank") pursuant to the Paycheck Protection
Program (the "PPP") of the Coronavirus Aid, Relief, and Economic Security Act
("CARES Act") administered by the U.S. Small Business Administration. The
Company's wholly-owned subsidiary, Curetis USA Inc. ("Curetis USA" and
collectively with the Company, the "Borrowers"), also entered into a Term Note
with the Bank (the "Subsidiary Note," and collectively with the Company Note,
the "Notes"). The Notes are dated April 22, 2020. The principal amount of the
Company Note was $879,630, and the principal amount of the Subsidiary Note is
$259,353.

In accordance with the requirements of the CARES Act, the Borrowers used the
proceeds from the Notes in accordance with the requirements of the PPP to cover
certain qualified expenses, including payroll costs, rent and utility costs.
Interest accrues on the Notes at the rate of 1.00% per annum. The Borrowers may
apply for forgiveness of amounts due under the Notes, in an amount equal to the
sum of qualified expenses under the PPP, which include payroll costs, rent
obligations, and covered utility payments incurred during the twenty-four weeks
following disbursement under the Notes. The entire proceeds were used under the
Notes for such qualifying expenses. OpGen filed for forgiveness of the
Subsidiary note during November 2020. The Company Note was forgiven in November
2020. In May 2021, the Subsidiary Note was forgiven.

Total interest expense (including amortization of debt discounts and financing
fees) on all debt instruments was $1,198,169 and $1,044,891 for the three months
ended June 30, 2021 and 2020, respectively. Total interest expense (including
accretion of fair value to book value and amortization of debt discounts and
financing fees) on all debt instruments was $2,363,151 and $1,083,158 for the
six months ended June 30, 2021 and 2020, respectively.

Note 8 - Stockholders' equity

As of June 30, 2021, the Company had 50,000,000 shares of authorized common shares and 38,270,250 shares issued and outstanding, and 10,000,000 shares of authorized preferred shares, of which none were issued or outstanding.



Following receipt of approval from stockholders at a special meeting of
stockholders held on January 17, 2018, the Company filed an amendment to its
Amended and Restated Certificate of Incorporation to effect a reverse stock
split of the issued and outstanding shares of common stock, at a ratio of one
share for twenty-five shares, and to reduce the authorized shares of common
stock from 200,000,000 to 50,000,000 shares. Additionally, following receipt of
approval from stockholders at a special meeting of stockholders held on August
22, 2019, the Company filed an additional amendment to its Amended and Restated
Certificate of Incorporation to effect a reverse stock split of the issued and
outstanding shares of common stock, at a ratio of one share for twenty shares.
All share amounts and per share prices in this Quarterly Report have been
adjusted to reflect the reverse stock splits.

On October 28, 2019, the Company closed the October 2019 Public Offering of
2,590,170 units at $2.00 per unit and 2,109,830 pre-funded units at $1.99 per
pre-funded unit. The offering raised gross proceeds of approximately $9.4
million and net proceeds of approximately $8.3 million. During the six months
ended June 30, 2021, 5,000 common warrants were exercised raising net proceeds
of $10,000. During the year ended December 31, 2020, 4,341,000 common warrants
were exercised raising net proceeds of approximately $8.7 million.

                                       23

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On February 11, 2020, the Company entered into an ATM Agreement with Wainwright,
which we amended and restated on November 13, 2020 to add BTIG, LLC pursuant to
which the Company may offer and sell from time to time in an "at the market
offering," at its option, up to an aggregate of $22.1 million of shares of the
Company's common stock through the sales agents. The Company did not sell
any shares under the 2020 ATM Offering during the three or six months ended June
30, 2021. During the year ended December 31, 2020, the Company sold 7,521,610
shares of its common stock under the 2020 ATM Offering resulting in aggregate
net proceeds to the Company of approximately $15.8 million, and gross proceeds
of $16.7 million. As of June 30, 2021, remaining availability under the ATM
Agreement is $5.4 million.

On April 1, 2020, the Company acquired all of the shares of Curetis GmbH, and
certain other assets and liabilities of Curetis N.V., as further described in
Notes 1 and 4, and paid, as the sole consideration, 2,028,208 shares of the
Company's common stock to the Seller.

On November 25, 2020, the Company closed a private placement with one
healthcare-focused U.S. institutional investor of (i) 2,245,400 shares of common
stock together with 2,245,400 common warrants to purchase up to 2,245,400 shares
of common stock and (ii) 2,597,215 pre-funded warrants, with each pre-funded
warrant exercisable for one share of common stock, together with 2,597,215
common warrants to purchase up to 2,597,215 shares of common stock (the "2020
PIPE"). Each share of common stock and accompanying common warrant were sold
together at a combined offering price of $2.065, and each pre-funded warrant and
accompanying common warrant were sold together at a combined offering price of
$2.055. The common warrants have an exercise price of $1.94 per share, and are
exercisable commencing on the six month anniversary of the date of issuance, and
will expire five and one half (5.5) years from the date of issuance. The 2020
PIPE raised aggregate net proceeds of $9.3 million, and gross proceeds of $10.0
million. As of December 31, 2020, all 2,597,215 pre-funded warrants issued in
the 2020 PIPE have been exercised.

On February 11, 2021, the Company closed the February 2021 Offering with a
single U.S.-based, healthcare-focused institutional investor for the purchase of
(i) 2,784,184 shares of common stock and (ii) 5,549,149 pre-funded warrants,
with each pre-funded warrant exercisable for one share of common stock. The
Company also issued to the investor, in a concurrent private placement,
unregistered common warrants to purchase 4,166,666 shares of the Company's
common stock. Each share of common stock and accompanying common warrant were
sold together at a combined offering price of $3.00, and each pre-funded warrant
and accompanying common warrant were sold together at a combined offering price
of $2.99. The pre-funded warrants are immediately exercisable, at an exercise
price of $0.01, and may be exercised at any time until all of the pre-funded
warrants are exercised in full. The common warrants will have an exercise price
of $3.55 per share, will be exercisable commencing on the six-month anniversary
of the date of issuance, and will expire five and one-half (5.5) years from the
date of issuance. The February 2021 Offering raised aggregate net proceeds of
$23.5 million, and gross proceeds of $25.0 million. As of June 30, 2021, all
pre-funded warrants issued in the February 2021 Offering have been exercised.

On March 9, 2021, the Company entered into an Exercise Agreement with the Holder
from our 2020 PIPE financing. Pursuant to the Exercise Agreement, in order to
induce the Holder to exercise all of the remaining 4,842,615 Existing Warrants
for cash, pursuant to the terms of and subject to beneficial ownership
limitations contained in the Existing Warrants, the Company agreed to issue to
the Holder, New Warrants to purchase 0.65 shares of common stock for each share
of common stock issued upon such exercise of the remaining 4,842,615 outstanding
Existing Warrants pursuant to the Exercise Agreement or an aggregate of
3,147,700 New Warrants. The terms of the New Warrants are substantially similar
to those of the Existing Warrants, except that the New Warrants have an exercise
price of $3.56. The New Warrants are immediately exercisable and will expire
five years from the date of the Exercise Agreement. The Holder paid an aggregate
of $255,751 to the Company for the purchase of the New Warrants. The Company
received aggregate gross proceeds before expenses of approximately $9.65 million
from the exercise of all of the remaining 4,842,615 outstanding Existing
Warrants held by the Holder and the payment of the purchase price for the New
Warrants. The Company recognized approximately $7.8 million of non-cash warrant
inducement expense during the six months ended June 30, 2021 related to this
transaction representing the fair value of the New Warrants issued to induce the
exercise. The fair values were calculated using the Black-Scholes option pricing
model.

Stock options

In 2008, the Company adopted the 2008 Stock Option and Restricted Stock Plan
(the "2008 Plan"), pursuant to which the Company's Board of Directors could
grant either incentive or non-qualified stock options or shares of restricted
stock to directors, key employees, consultants and advisors.

In April 2015, the Company adopted, and the Company's stockholders approved, the
2015 Equity Incentive Plan (the "2015 Plan"); the 2015 Plan became effective
upon the execution and delivery of the underwriting agreement for the Company's
initial public offering in May 2015. Following the effectiveness of the 2015
Plan, no further grants will be made under the 2008 Plan. The 2015 Plan provides
for the granting of incentive stock options within the meaning of Section 422 of
the Code to employees and the granting of non-qualified stock options to
employees, non-employee directors and consultants. The 2015 Plan also provides
for the grants of restricted stock, restricted stock units, stock appreciation
rights, dividend equivalents and stock payments to employees, non-employee
directors and consultants.

Under the 2015 Plan, the aggregate number of shares of the common stock
authorized for issuance may not exceed (1) 2,710 plus (2) the sum of the number
of shares subject to outstanding awards under the 2008 Plan as of the 2015
Plan's effective date, that are subsequently forfeited or terminated for any
reason before being exercised or settled, plus (3) the number of shares subject
to vesting restrictions under the 2008 Plan as of the 2015 Plan's effective date
that are subsequently forfeited. In addition, the number of shares that have
been authorized for issuance under the 2015 Plan will be automatically increased
on the first day of each fiscal year beginning on January 1, 2016 and ending on
(and including) January 1, 2025, in an amount equal to the lesser of (1) 4% of
the outstanding shares of common stock on the last day of the immediately
preceding fiscal year, or (2) another lesser amount determined by the Company's
Board of Directors. Following Board of Director approval, 1,003,421 shares were
automatically added to the 2015 Plan. Shares subject to awards granted under the
2015 Plan that are forfeited or terminated before being exercised or settled, or
are not delivered to the participant because such award is settled in cash, will
again become available for issuance under the 2015 Plan. However, shares that
have actually been issued shall not again become available unless forfeited. As
of June 30, 2021, 411,644 shares remain available for issuance under the 2015
Plan.

                                       24

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On September 30, 2020, the Company held its 2020 Annual Meeting of Stockholders
(the "Annual Meeting"). At the Annual Meeting, stockholders of the Company voted
to approve, among other things, a plan under which stock options to purchase an
aggregate of 1,300,000 shares of the Company's common stock would be made by the
Board of Directors of the Company outside of the stockholder-approved equity
incentive plan to its executive officers and non-employee directors (the "2020
Stock Options Plan"). The 2020 Stock Options Plan and the grant made thereunder
were approved by the Board of Directors on August 6, 2020, subject to receipt of
stockholder approval at the Annual Meeting. The aggregate number of shares of
the Company's common stock authorized for issuance is 1,300,000 shares of common
stock and all 1,300,000 stock options were issued on September 30, 2020. Shares
subject to awards granted under the 2020 Stock Options Plan that are forfeited
or terminated before being exercised will not be available for re-issuance under
the 2020 Stock Options Plan.

Replacement awards

In connection with the acquisition of Curetis, the Company issued equity awards
to Curetis employees consisting of stock options ("replacement awards") in
exchange for their Curetis equity awards. The replacement awards consisted of
134,371 stock options with a weighted average grant date fair value of $1.68.
The terms of these replacement awards are substantially similar to the original
Curetis equity awards. The fair value of the replacement awards for services
rendered through April 1, 2020, the acquisition date, was recognized as a
component of the purchase consideration, with the remaining fair value of the
replacement awards related to the post-combination services recorded as
stock-based compensation over the remaining vesting period.

For the three and six months ended June 30, 2021 and 2020, the Company recognized share-based compensation expense as follows:



                                         Three Months Ended June 30,         Six Months Ended June 30,
                                             2021              2020             2021             2020
Cost of services                       $          2,944     $      727     $        4,346     $    1,455
Research and development                         67,783         12,077            102,756         26,063
General and administrative                      172,790         17,222            314,781         78,710
Sales and marketing                              18,031          3,561             29,335          7,099
                                       $        261,548     $   33,587     $      451,218     $  113,327


No income tax benefit for share-based compensation arrangements was recognized
in the condensed consolidated statements of operations and comprehensive loss
due to the Company's net loss position.

The Company granted 20,000 options during the three months ended June 30, 2021.
During the three months ended June 30, 2021, 98,356 options were forfeited, and
473 options expired. The Company granted 355,000 options during the six months
ended June 30, 2021. During the six months ended June 30, 2021, 98,376 options
were forfeited, and 473 options expired.

The Company had total stock options to acquire 1,920,673 shares of common stock outstanding at June 30, 2021 under all of its equity compensation plans.

Restricted stock units



The Company granted 80,000 restricted stock units during the three months ended
June 30, 2021, and 3,768 restricted stock units vested and 21,467 were
forfeited. The Company granted 360,000 restricted stock units during the six
months ended June 30, 2021, and 3,768 restricted stock units vested and 21,467
were forfeited. The Company had 342,884 total restricted stock units outstanding
at June 30, 2021.

                                       25

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Stock purchase warrants

At June 30, 2021 and December 31, 2020, the following warrants to purchase shares of common stock were outstanding:



                                                                Outstanding at
                                                                           December
                                                           June 30,        31, 2020
  Issuance       Exercise Price         Expiration         2021 (1)           (1)
November 2011   $       3,955.00        November 2021              15              15
December 2011   $       3,955.00        December 2021               2               2
February 2015   $       3,300.00        February 2025             451             451
  May 2016      $         656.20             May 2021               -           9,483
  June 2016     $         656.20             May 2021               -           4,102
  June 2017     $         390.00            June 2022             938             938
  July 2017     $         345.00            July 2022             318             318
  July 2017     $         250.00            July 2022           2,501           2,501
  July 2017     $         212.50            July 2022          50,006          50,006
February 2018   $          81.25        February 2023           9,232           9,232
February 2018   $          65.00        February 2023          92,338          92,338
October 2019    $           2.00         October 2024         354,000         359,000
October 2019    $           2.60         October 2024         235,000         235,000
November 2020   $           1.94             May 2026               -       4,842,615
November 2020   $           2.68             May 2026         242,130         242,130
February 2021   $           3.55          August 2026       4,166,666               -
February 2021   $           3.90          August 2026         416,666               -
 March 2021     $           3.56           March 2026       3,147,700               -
                                                            8,717,963       5,848,131

The warrants listed above were issued in connection with various debt, equity or development contract agreements.

(1) Warrants to purchase fractional shares of common stock resulting from the

reverse stock split on August 22, 2019 were rounded up to the next whole

share of common stock on a holder by holder basis.

Note 9 - Commitments and Contingencies

Registration and other stockholder rights

In connection with the various investment transactions, the Company entered into registration rights agreements with stockholders, pursuant to which the investors were granted certain demand registration rights and/or piggyback and/or resale registration rights in connection with subsequent registered offerings of the Company's common stock.

Supply agreements



In June 2017, the Company entered into an agreement with Life Technologies
Corporation, a subsidiary of Thermo Fisher Scientific ("LTC"), to supply the
Company with Thermo Fisher Scientific's QuantStudio 5 Real-Time PCR Systems
("QuantStudio 5") to be used to run OpGen's Acuitas AMR Gene Panel tests. Under
the terms of the agreement, the Company must notify LTC of the number of
QuantStudio 5s that it commits to purchase in the following quarter. As of June
30, 2021, the Company had acquired twenty-four QuantStudio 5s including none
during the three and six months ended June 30, 2021. As of June 30, 2021, the
Company has not committed to acquiring additional QuantStudio 5s in the next
three months.

Curetis places frame-work orders for Unyvero Systems and for raw materials for
its cartridge manufacturing to ensure availability during commercial
ramp-up-phase and also to gain volume-scale-effects with regards to purchase
prices. Some of the electronic parts used for the production of Unyvero Systems
have lead times of several months, hence it is necessary to order such systems
with long-term framework-orders to ensure the demands from the market are
covered. The aggregate purchase commitments over the next twelve months are
approximately $2.1 million.

                                       26

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COVID-19 Impact



In December 2019 and early 2020, the coronavirus known as COVID-19 was reported
to have surfaced in China. The spread of this virus globally in early 2020 has
caused business disruption domestically in the United States and in Europe, the
areas in which the Company primarily operates. While the disruption is currently
expected to be temporary, such disruption is ongoing and there remains
considerable uncertainty around the duration of this disruption. Therefore,
while the Company expects that this matter will continue to impact the Company's
financial condition, results of operations, or cash flows, the extent of the
financial impact and duration cannot be reasonably estimated at this time.

Note 10 - Leases

The following table presents the Company's ROU assets and lease liabilities as of June 30, 2021 and December 31, 2020:



Lease Classification      June 30, 2021     December 31, 2020
ROU Assets:
Operating                $     2,038,073   $         2,082,300
Financing                        227,209               449,628
Total ROU assets         $     2,265,282   $         2,531,928
Liabilities
Current:
Operating                $       854,233   $           964,434
Finance                          116,829               266,470
Noncurrent:
Operating                      2,910,810             1,492,544
Finance                           18,693                46,794
Total lease liabilities  $     3,900,565   $         2,770,242


Maturities of lease liabilities as of June 30, 2021 by fiscal year are as
follows:

Maturity of Lease Liabilities          Operating       Finance        Total
2021                                 $    513,049    $  92,858    $    605,907
2022                                      740,316       44,850         785,166
2023                                      624,916        3,364         628,280
2024                                      634,511          280         634,791
2025                                      545,576            -         545,576
Thereafter                              2,504,650            -       2,504,650
Total lease payments                    5,563,018      141,352       5,704,370
Less: Interest                         (1,797,975 )     (5,830 )   

(1,803,805 ) Present value of lease liabilities $ 3,765,043 $ 135,522 $ 3,900,565

Condensed consolidated statements of operations classification of lease costs as of the three and six months ended June 30, 2021 and 2020 are as follows:



                                           Three months ended June 30,                           Six months ended June 30,
Lease Cost            Classification           2021             2020             2021                                2020
Operating           Operating expenses   $       298,331     $ 335,920     $      646,369     $ 550,256
Finance:
Amortization        Operating expenses           111,464       129,909            222,420       262,257
Interest expense      Other expenses               4,491        15,050             11,350        33,519
Total lease costs                        $       414,286     $ 480,879     $      880,139     $ 846,032


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Other lease information as of June 30, 2021 is as follows:



Other Information                                  Total
Weighted average remaining lease term (in years)
Operating leases                                    7.2
Finance leases                                      0.8
Weighted average discount rate:
Operating leases                                    8.7 %
Finance leases                                      9.4 %


Supplemental cash flow information as of the six months ended June 30, 2021 and 2020 is as follows:

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