Description of Business and Basis of Presentation	9 Months Ended
Sep. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis of Presentation	1. Description of Business and Basis of Presentation Organization Aridis Pharmaceuticals, Inc. (the “Company” or “we” or “our” or “us”) was established as a California limited liability corporation in 2003. The Company converted to a Delaware C corporation on May 21, 2014. Our principal place of business is in Los Gatos, California. We are a late-stage biopharmaceutical company focused on developing new breakthrough therapies for infectious diseases and addressing the growing problem of antibiotic resistance. The Company has a deep, diversified portfolio of clinical and pre-clinical stage non-antibiotic anti-infective product candidates that are complemented by a fully human monoclonal antibody discovery platform technology. The Company’s suite of anti-infective monoclonal antibodies offers opportunities to profoundly alter the current trajectory of increasing antibiotic resistance and improve the health outcome of many of the most serious life-threatening infections particularly in hospital settings. Basis of Presentation and Consolidation The accompanying condensed consolidated financial statements include the amounts of the Company and our wholly owned subsidiaries and have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and in accordance with the instructions to Form 10-Q and applicable rules of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. The condensed consolidated financial statements have been prepared on the same basis as the annual consolidated financial statements. In the opinion of management, the accompanying condensed consolidated financial statements reflect all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair presentation. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto for the preceding fiscal year included in the Company’s Annual Report on Form 10-K filed with the United States Securities and Exchange Commission (“SEC”) on May 22, 2023. The condensed consolidated financial statements include the accounts of the Company and its two wholly-owned subsidiaries, Aridis Biopharmaceuticals, LLC and Aridis Pharmaceuticals, C.V. All intercompany balances and transactions have been eliminated in consolidation. The Company operates in one segment. Management uses one measurement of profitability and does not segregate its business for internal reporting. The results of operations for interim periods are not necessarily indicative of the results to be expected for the full year or any other future period. The accompanying condensed consolidated balance sheet at September 30, 2023 has been derived from the audited balance sheet at December 31, 2022 contained in the above referenced Form 10-K. Going Concern The Company has had recurring losses from operations since inception and had negative cash flows from operating activities during the nine months ended September 30, 2023, and the year ended December 31, 2022. Management expects to incur operating losses and negative cash flows from operations in the foreseeable future as the Company continues its product development programs. The forecasted outflow of cash for at least a one-year period from the expected condensed consolidated financial statement issuance date is in excess of the cash available on-hand. The Company’s research and development expenses and resulting cash burn during the nine months ended September 30, 2023, were largely due to costs associated with the Phase 1/2 study of AR-501 for the treatment of chronic lung infections associated with cystic fibrosis and the activities associated with the Phase 3 study of AR-320 for the prevention of S. aureus VAP. Until the clinical development activities for AR-301 and AR-320 resume, the current clinical development activities are focused primarily on AR-501. The Company plans to fund its cash flow needs through future debt and/or equity financings, which we may obtain through one or more public or private equity offerings, debt financings, government or other third-party funding, strategic alliances and licensing or collaboration arrangements. If the Company is unable to obtain funding, the Company could be forced to delay, reduce or eliminate its research and development programs or future commercialization efforts, which could adversely affect its future business prospects and its ability to continue as a going concern. The Company believes that its current available cash and cash equivalents, including cash received in August 2023 from equity raise proceeds, will not be sufficient to fund its planned expenditures and meet the Company’s obligations for at least the one-year period following its consolidated financial statement issuance date. In the absence of equity or debt financing, or other capital sources, including grant funding, potential collaborations or other strategic transactions, management anticipates that existing cash resources will not be sufficient to meet operating and liquidity needs on or before November 30, 2023. The accompanying condensed consolidated financial statements have been prepared on a going concern basis that contemplates the realization of assets and discharge of liabilities in their normal course of business. There is substantial doubt about the Company’s ability to continue as a going concern for one year after the date that these condensed consolidated financial statements are issued. These condensed consolidated financial statements do not include any adjustments that might be necessary from the outcome of this uncertainty.

Description of Business and Basis of Presentation

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of Business and Basis of Presentation

1. Description of Business and Basis of Presentation

Organization

Aridis Pharmaceuticals, Inc. (the “Company” or “we” or “our” or “us”) was established as a California limited liability corporation in 2003. The Company converted to a Delaware C corporation on May 21, 2014. Our principal place of business is in Los Gatos, California. We are a late-stage biopharmaceutical company focused on developing new breakthrough therapies for infectious diseases and addressing the growing problem of antibiotic resistance. The Company has a deep, diversified portfolio of clinical and pre-clinical stage non-antibiotic anti-infective product candidates that are complemented by a fully human monoclonal antibody discovery platform technology. The Company’s suite of anti-infective monoclonal antibodies offers opportunities to profoundly alter the current trajectory of increasing antibiotic resistance and improve the health outcome of many of the most serious life-threatening infections particularly in hospital settings.

Basis of Presentation and Consolidation

The accompanying condensed consolidated financial statements include the amounts of the Company and our wholly owned subsidiaries and have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and in accordance with the instructions to Form 10-Q and applicable rules of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. The condensed consolidated financial statements have been prepared on the same basis as the annual consolidated financial statements. In the opinion of management, the accompanying condensed consolidated financial statements reflect all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair presentation. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto for the preceding fiscal year included in the Company’s Annual Report on Form 10-K filed with the United States Securities and Exchange Commission (“SEC”) on May 22, 2023.

The condensed consolidated financial statements include the accounts of the Company and its two wholly-owned subsidiaries, Aridis Biopharmaceuticals, LLC and Aridis Pharmaceuticals, C.V. All intercompany balances and transactions have been eliminated in consolidation. The Company operates in one segment. Management uses one measurement of profitability and does not segregate its business for internal reporting. The results of operations for interim periods are not necessarily indicative of the results to be expected for the full year or any other future period. The accompanying condensed consolidated balance sheet at September 30, 2023 has been derived from the audited balance sheet at December 31, 2022 contained in the above referenced Form 10-K.

Going Concern

The Company has had recurring losses from operations since inception and had negative cash flows from operating activities during the nine months ended September 30, 2023, and the year ended December 31, 2022. Management expects to incur operating losses and negative cash flows from operations in the foreseeable future as the Company continues its product development programs. The forecasted outflow of cash for at least a one-year period from the expected condensed consolidated financial statement issuance date is in excess of the cash available on-hand.

The Company’s research and development expenses and resulting cash burn during the nine months ended September 30, 2023, were largely due to costs associated with the Phase 1/2 study of AR-501 for the treatment of chronic lung infections associated with cystic fibrosis and the activities associated with the Phase 3 study of AR-320 for the prevention of S. aureus VAP. Until the clinical development activities for AR-301 and AR-320 resume, the current clinical development activities are focused primarily on AR-501.

The Company plans to fund its cash flow needs through future debt and/or equity financings, which we may obtain through one or more public or private equity offerings, debt financings, government or other third-party funding, strategic alliances and licensing or collaboration arrangements. If the Company is unable to obtain funding, the Company could be forced to delay, reduce or eliminate its research and development programs or future commercialization efforts, which could adversely affect its future business prospects and its ability to continue as a going concern. The Company believes that its current available cash and cash equivalents, including cash received in August 2023 from equity raise proceeds, will not be sufficient to fund its planned expenditures and meet the Company’s obligations for at least the one-year period following its consolidated financial statement issuance date. In the absence of equity or debt financing, or other capital sources, including grant funding, potential collaborations or other strategic transactions, management anticipates that existing cash resources will not be sufficient to meet operating and liquidity needs on or before November 30, 2023.

The accompanying condensed consolidated financial statements have been prepared on a going concern basis that contemplates the realization of assets and discharge of liabilities in their normal course of business. There is substantial doubt about the Company’s ability to continue as a going concern for one year after the date that these condensed consolidated financial statements are issued. These condensed consolidated financial statements do not include any adjustments that might be necessary from the outcome of this uncertainty.