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 and negative operating cash flows and has a significant amount of debt coming due through June 2024. The Company has funded its operations primarily through external investor financing arrangements and significant actions taken by the Company, including the following:

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On June 26, 2023, the Company announced that its subsidiary Curetis and the European Investment Bank (“EIB”) agreed in principle to certain terms relating to the repayment of the second tranche of Curetis’ loan from the EIB pursuant to that certain Finance Contract, dated December 12, 2016, as amended, by and between Curetis and the EIB (the “Finance Contract”). The second tranche had a principal balance of €3 million plus accumulated and deferred interest. The second tranche was drawn down in June 2018 and matured on June 22, 2023. On July 4, 2023, the EIB and Curetis entered into a Standstill Agreement (the “Standstill Agreement”) pursuant to which the EIB agreed that, with respect to each default or event of default relating to such second tranche, the EIB would not take any action or exercise any right under the Finance Contract until the earlier of a restructuring of the second tranche and November 30, 2023. As a condition to entering into the Standstill Agreement, Curetis paid the EIB a partial payment of interest on the second tranche of €1 million on June 22, 2023. In addition, Curetis agreed to certain undertakings during the standstill period, including the delivery of a rolling cash flow forecast and to cause a third-party restructuring expert to prepare and deliver a restructuring opinion to the EIB. EIB may terminate the Standstill Agreement upon notice to Curetis if, among other customary termination rights, Curetis or the guarantors fail to comply with any undertakings in the Standstill Agreement, the third party expert determines that there are no prospects for a successful restructuring of the second tranche and that it therefore will be unable to issue a restructuring opinion, or the cash flow forecast shows a negative liquidity shortfall during the specified period.

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On May 4, 2023, the Company closed a best-efforts public offering pursuant to a securities purchase agreement with a certain institutional investor, pursuant to which the Company issued and sold to the Investor (i) 605,000 shares of the Company’s common stock, par value $0.01 per share, (ii) pre-funded warrants to purchase up to an aggregate of 3,890,825 shares of common stock, and (iii) common warrants to purchase up to an aggregate of 4,495,825 shares of common stock. Each share of common stock and accompanying common warrant was sold at a price of $0.7785 per share and accompanying common warrant, and each pre-funded warrant and accompanying common warrant was sold at an offering price of $0.7685 per share underlying such pre-funded warrant and accompanying common warrant, for aggregate gross proceeds of approximately $3.5 million and net proceeds of approximately $3.0 million. The common warrants have an exercise price of $0.7785 per share and will be exercisable beginning on the date of stockholder approval of the exercisability of the warrants under Nasdaq rules or may be exercised pursuant to the Warrant Inducement Agreement entered into on October 12, 2023, as amended on October 26, 2023 (the “Inducement Agreement”), upon the payment of additional consideration of $0.25 per share of common stock issued upon exercise of any existing warrants. The common warrants not exercised as part of the Inducement Agreement will expire on the five-year anniversary of the date of such stockholder approval (see Note 11). Each pre-funded warrant has an exercise price per share of common stock equal to $0.01 per share and may be exercised at any time until the pre-funded warrants are exercised in full. In connection with the offering, the Company also entered into a warrant amendment agreement with the investor pursuant to which the Company amended certain existing warrants to purchase up to 6,396,903 shares of common stock that were previously issued in 2018, 2021, 2022 and 2023 to the investor, with exercise prices ranging from $2.65 to $7.54 per share, in consideration for their purchase of the securities in the offering, as follows: (i) lower the exercise price of the existing warrants to $0.7785 per share, (ii) provide that the existing warrants, as amended, will not be exercisable until the receipt of stockholder approval for the exercisability of the common warrants in the offering, and (iii) extend the original expiration date of the existing warrants by five years following the receipt of such stockholder approval. The increase in fair value resulting from the warrant modifications is accounted for as an equity issuance cost, resulting in a debit and credit to additional paid in capital of approximately $0.3 million. As of September 30, 2023, stockholder approval for the exercisability of the common warrants in the offering has not yet been obtained; however, pursuant to the Inducement Agreement, the existing common warrants are exercisable until December 31, 2023 upon payment of the exercise price plus additional consideration of $0.25 per share of common stock issued upon exercise of any existing warrants. In addition, the Company’s requirement to hold a stockholders’ meeting to obtain approval for the exercisability of the existing common warrants is not applicable during the offer period under the Inducement Agreement.

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On January 11, 2023, the Company closed a best-efforts public offering pursuant to a securities purchase agreement with a certain institutional investor for the purchase of (i) 321,207 shares of the Company’s common stock, par value $0.01 per share, (ii) pre-funded warrants to purchase up to an aggregate of 2,265,000 shares of common stock (the “Pre-funded Warrants”), (iii) Series A-1 common warrants to purchase an aggregate of 2,586,207 shares of common stock (the “Series A-1 Warrants”), and (iv) Series A-2 common warrants to purchase an aggregate of 2,586,207 shares of common stock (the “Series A-2 Warrants,” and together with the Series A-1 Warrants, the “Common Warrants”). Each share of common stock and accompanying Common Warrants were sold at a price of $2.90 per share and accompanying Common Warrants, and each Pre-funded Warrant and accompanying Common Warrants were sold at an offering price of $2.89 per share underlying such Pre-funded Warrants and accompanying Common Warrants, for aggregate gross proceeds of approximately $7.5 million before deducting the placement agent’s fees and the offering expenses, and net proceeds of approximately $6.9 million. The Common Warrants have an exercise price of $2.65 per share. The Series A-1 Warrants were immediately exercisable upon issuance, and will expire five years following the issuance date. The Series A-2 Warrants were immediately exercisable upon issuance, and will expire eighteen months following the issuance date. Subject to certain ownership limitations described in the Pre-funded Warrants, the Pre-funded Warrants were immediately exercisable and could be exercised at a nominal consideration of $0.01 per share of common stock any time until all the Pre-funded Warrants are exercised in full. All Pre-funded Warrants were exercised by February 15, 2023. In connection with the Company’s best-efforts public offering consummated in May 2023, the Company amended the exercise price of the Common Warrants to $0.7785 per share.

On June 5, 2023, the Listing Qualifications Staff of The Nasdaq Stock Market LLC notified the Company that the closing bid price of the Company’s common stock had, for 30 consecutive business days preceding the date of such notice, been below the $1.00 per share minimum required for continued listing on The Nasdaq Capital Market pursuant to Nasdaq Marketplace Rule 5550(a)(2). In accordance with Nasdaq Marketplace Rule 5810(c)(3)(A), the Company was provided 180 calendar days, or until December 4, 2023, to regain compliance. If at any time before December 4, 2023, the closing bid price of the common stock is at least $1 for a minimum of ten (10) consecutive trading days, the Company can regain compliance. If the Company is not in compliance with the minimum bid price requirement by December 4, 2023, the Company may be entitled to an additional 180-day grace period if the Company meets the continued listing requirements for market value of publicly held shares and all other initial listing standards for The Nasdaq Capital Market at such time.

OpGen is a guarantor of Curetis’ debt to the EIB and OpGen would likely remain responsible for Curetis’ debt unless it is fully satisfied in connection with the resolution of Curetis’ and Ares Genetics’ insolvency proceedings. If Curetis’ debt is not fully satisfied in connection with the insolvency proceedings, and if the EIB asserts its claims against OpGen, OpGen’s cash reach would be dependent on the remaining amount due, and it is possible that OpGen would need to seek bankruptcy protection in the United States. Even if Curetis’ debt is satisfied in connection with the insolvency proceedings and the EIB does not assert claims against OpGen, OpGen’s cash available to fund its business operations is significantly limited. This has led management to conclude that there is substantial doubt about the Company’s ability to continue as a going concern. To meet its capital needs and improve its liquidity position, the Company has been and continues to actively consider multiple alternatives, including, but not limited to, restructuring or refinancing its debt, seeking additional debt or equity capital, reducing or delaying business activities, selling assets, other strategic financings or transactions and other measures, including obtaining relief under applicable bankruptcy laws. There can be no assurance that the Company will be able to identify or execute on any of these alternatives on acceptable terms or that any of these alternatives will be successful.

The accompanying unaudited condensed consolidated financial statements do not include any adjustments related to the recoverability and classification of assets or the amounts and classification of liabilities that may result from the possible inability of the Company to continue as a going concern.