Organization	9 Months Ended
Sep. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	1. Organization Description of Business Unity Biotechnology, Inc. (the “Company”) is a biotechnology company engaged in the research and development of therapeutics to slow, halt, or reverse diseases of aging. The Company devotes substantially all of its time and efforts to performing research and development and raising capital. The Company’s headquarters are located in South San Francisco, California. The Company was incorporated in the State of Delaware in 2009. Liquidity The accompanying condensed financial statements have been prepared assuming that the Company will continue as a going concern, which contemplates the realization of assets and the settlement of liabilities and commitments in the normal course of business. The Company has incurred operating losses and has an accumulated deficit as a result of ongoing efforts to develop drug product candidates, including conducting preclinical and clinical trials and providing general and administrative support for these operations. The Company had an accumulated deficit of $501.9 million and $484.4 million as of September 30, 2024 and December 31, 2023, respectively. The Company had net losses of $6.5 million and $14.8 million for the three months ended September 30, 2024 and 2023, respectively, net losses of $17.6 million and $35.5 million for the nine months ended September 30, 2024 and 2023, respectively, and net cash used in operating activities of $15.0 million and $29.5 million for the nine months ended September 30, 2024 and 2023, respectively. To date, none of the Company’s drug product candidates have been approved for sale; therefore, the Company has not generated any product revenue. The Company anticipates operating losses and negative operating cash flows to continue for the foreseeable future. The Company has financed its operations primarily through private placements of preferred stock and promissory notes, public equity issuances and more recently, from its ATM Offering Programs, the sale of common stock and warrants under a Follow-On Offering and the Inducement Offer and will continue to be dependent upon equity and/or debt financing until the Company is able to generate positive cash flows from its operations. The Company had cash, cash equivalents, and marketable securities of $29.0 million as of September 30, 2024. The Company expects that its cash, cash equivalents, and marketable securities as of September 30, 2024 will not be sufficient to fund its current business plan including related operating expenditure requirements through at least 12 months from the date of issuance of these condensed financial statements are filed with the Securities and Exchange Commission (“SEC”). These conditions raise substantial doubt about the Company’s ability to continue as going concern. The Company plans to seek to address this condition by raising additional capital to finance its operations. The future viability of the Company is dependent on its ability to raise additional capital to finance its operations. Although the Company has been successful in raising capital in the past, there is no assurance that it will be successful in obtaining such additional financing. If sufficient funds on acceptable terms are not available when needed, the Company could be further required to significantly reduce its operating expenses and delay, reduce the scope of, or eliminate one or more of its development programs. Failure to manage discretionary spending or raise additional financing, as needed, may adversely impact the Company’s ability to achieve its intended business objectives, or the Company may be forced to liquidate assets where possible, or to cease operations or file for bankruptcy protection. Therefore, it is not considered probable that the Company’s plans to raise additional capital nor reduce discretionary spending will alleviate the substantial doubt regarding its ability to continue as a going concern.

Organization

9 Months Ended

Sep. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

1. Organization

Description of Business

Unity Biotechnology, Inc. (the “Company”) is a biotechnology company engaged in the research and development of therapeutics to slow, halt, or reverse diseases of aging. The Company devotes substantially all of its time and efforts to performing research and development and raising capital. The Company’s headquarters are located in South San Francisco, California. The Company was incorporated in the State of Delaware in 2009.

Liquidity

The accompanying condensed financial statements have been prepared assuming that the Company will continue as a going concern, which contemplates the realization of assets and the settlement of liabilities and commitments in the normal course of business. The Company has incurred operating losses and has an accumulated deficit as a result of ongoing efforts to develop drug product candidates, including conducting preclinical and clinical trials and providing general and administrative support for these operations. The Company had an accumulated deficit of $501.9 million and $484.4 million as of September 30, 2024 and December 31, 2023, respectively. The Company had net losses of $6.5 million and $14.8 million for the three months ended September 30, 2024 and 2023, respectively, net losses of $17.6 million and $35.5 million for the nine months ended September 30, 2024 and 2023, respectively, and net cash used in operating activities of $15.0 million and $29.5 million for the nine months ended September 30, 2024 and 2023, respectively. To date, none of the Company’s drug product candidates have been approved for sale; therefore, the Company has not generated any product revenue. The Company anticipates operating losses and negative operating cash flows to continue for the foreseeable future. The Company has financed its operations primarily through private placements of preferred stock and promissory notes, public equity issuances and more recently, from its ATM Offering Programs, the sale of common stock and warrants under a Follow-On Offering and the Inducement Offer and will continue to be dependent upon equity and/or debt financing until the Company is able to generate positive cash flows from its operations.

The Company had cash, cash equivalents, and marketable securities of $29.0 million as of September 30, 2024. The Company expects that its cash, cash equivalents, and marketable securities as of September 30, 2024 will not be sufficient to fund its current business plan including related operating expenditure requirements through at least 12 months from the date of issuance of these condensed financial statements are filed with the Securities and Exchange Commission (“SEC”). These conditions raise substantial doubt about the Company’s ability to continue as going concern. The Company plans to seek to address this condition by raising additional capital to finance its operations. The future viability of the Company is dependent on its ability to raise additional capital to finance its operations. Although the Company has been successful in raising capital in the past, there is no assurance that it will be successful in obtaining such additional financing. If sufficient funds on acceptable terms are not available when needed, the Company could be further required to significantly reduce its operating expenses and delay, reduce the scope of, or eliminate one or more of its development programs. Failure to manage discretionary spending or raise additional financing, as needed, may adversely impact the Company’s ability to achieve its intended business objectives, or the Company may be forced to liquidate assets where possible, or to cease operations or file for bankruptcy protection. Therefore, it is not considered probable that the Company’s plans to raise additional capital nor reduce discretionary spending will alleviate the substantial doubt regarding its ability to continue as a going concern.