Organization	9 Months Ended
Sep. 30, 2025
Accounting Policies [Abstract]
Organization	1. Organization Sana Biotechnology, Inc. (the Company or Sana) is a biotechnology company focusing on utilizing engineered cells as medicines. The Company’s operations to date have included identifying and developing potential product candidates, executing preclinical studies, establishing manufacturing capabilities, preparing for and executing clinical trials of its product candidates and supporting clinical trials of product candidates developed using its technologies, acquiring technologies, staffing the Company, business planning, establishing and maintaining the Company’s intellectual property portfolio, raising capital, and providing general and administrative support for these operations. Liquidity and capital resources The Company is subject to a number of risks and uncertainties similar to other biotechnology companies in the development stage, including, but not limited to, those related to the need to obtain adequate additional funding, possible failure of preclinical testing or clinical trials, the need to obtain marketing approval for its product candidates, building out manufacturing capabilities, competitors developing new technological innovations, the need to successfully commercialize and gain market acceptance of the Company’s products, the need to protect the Company’s intellectual property and proprietary technologies, and the need to attract and retain key scientific and management personnel. If the Company does not successfully commercialize or partner any of its product candidates, it will be unable to generate product revenue or achieve profitability. Until such time as the Company can generate significant revenue from product sales, if ever, it expects to finance its operations with the proceeds from additional equity or debt financings or capital obtained in connection with strategic collaborations or licensing or other arrangements. In the event that additional financing is required, the Company may not be able to raise capital on terms acceptable to it or at all. In August 2025, the Company completed an underwritten public offering (the Offering) pursuant to which it sold 24.3 million shares of its common stock, including 3.4 million shares pursuant to the full exercise of the underwriters' option to purchase additional shares, and pre-funded warrants to purchase 1.5 million shares of its common stock for net proceeds of approximately $80.6 million, after deducting underwriting discounts and commissions and offering expenses. In May 2025, the Company entered into a sales agreement (the Sales Agreement) with TD Securities (USA) LLC (TD Cowen), acting as sales agent, pursuant to which it may offer and sell through TD Cowen up to $119.0 million of shares of the Company’s common stock from time to time in a series of one or more at the market equity offerings (collectively, the ATM facility). During the quarter ended September 30, 2025, the Company sold an aggregate of 7.3 million shares of the Company's common stock under the Sales Agreement for net proceeds of $28.6 million, after deducting commissions and expenses. In February 2024, the Company completed an underwritten public offering pursuant to which it sold 21.8 million shares of its common stock, including 4.5 million shares pursuant to the full exercise of the underwriters' option to purchase additional shares, and pre-funded warrants to purchase 12.7 million shares of its common stock for net proceeds of approximately $180.0 million, after deducting underwriting discounts and commissions and offering expenses. The Company has incurred operating losses each year since inception and expects such losses to continue for the foreseeable future. As of September 30, 2025, the Company had cash, cash equivalents, and marketable securities of $153.1 million, and an accumulated deficit of $1.8 billion, which includes cumulative non-cash charges related to the revaluation of the success payment liabilities and contingent consideration of $11.3 million and $63.9 million, respectively. Based on the Company’s current operating plan, the Company believes that its existing cash, cash equivalents, and marketable securities as of September 30, 2025, together with the net proceeds received from the Offering and the ATM facility, will be sufficient to fund its planned operations for at least one year from the filing of this Quarterly Report. In assessing its ability to continue as a going concern, the Company carefully evaluated the conditions and events that may raise substantial doubt about its ability to continue operations for one year from the filing of this Quarterly Report. This evaluation considered several factors, including the Company’s current financial condition and available liquidity resources, including the proceeds from the Offering and the ATM facility.

Organization

9 Months Ended

Sep. 30, 2025

1. Organization

Sana Biotechnology, Inc. (the Company or Sana) is a biotechnology company focusing on utilizing engineered cells as medicines. The Company’s operations to date have included identifying and developing potential product candidates, executing preclinical studies, establishing manufacturing capabilities, preparing for and executing clinical trials of its product candidates and supporting clinical trials of product candidates developed using its technologies, acquiring technologies, staffing the Company, business planning, establishing and maintaining the Company’s intellectual property portfolio, raising capital, and providing general and administrative support for these operations.

Liquidity and capital resources

The Company is subject to a number of risks and uncertainties similar to other biotechnology companies in the development stage, including, but not limited to, those related to the need to obtain adequate additional funding, possible failure of preclinical testing or clinical trials, the need to obtain marketing approval for its product candidates, building out manufacturing capabilities, competitors developing new technological innovations, the need to successfully commercialize and gain market acceptance of the Company’s products, the need to protect the Company’s intellectual property and proprietary technologies, and the need to attract and retain key scientific and management personnel. If the Company does not successfully commercialize or partner any of its product candidates, it will be unable to generate product revenue or achieve profitability. Until such time as the Company can generate significant revenue from product sales, if ever, it expects to finance its operations with the proceeds from additional equity or debt financings or capital obtained in connection with strategic collaborations or licensing or other arrangements. In the event that additional financing is required, the Company may not be able to raise capital on terms acceptable to it or at all.

In August 2025, the Company completed an underwritten public offering (the Offering) pursuant to which it sold 24.3 million shares of its common stock, including 3.4 million shares pursuant to the full exercise of the underwriters' option to purchase additional shares, and pre-funded warrants to purchase 1.5 million shares of its common stock for net proceeds of approximately $80.6 million, after deducting underwriting discounts and commissions and offering expenses.

In May 2025, the Company entered into a sales agreement (the Sales Agreement) with TD Securities (USA) LLC (TD Cowen), acting as sales agent, pursuant to which it may offer and sell through TD Cowen up to $119.0 million of shares of the Company’s common stock from time to time in a series of one or more at the market equity offerings (collectively, the ATM facility). During the quarter ended September 30, 2025, the Company sold an aggregate of 7.3 million shares of the Company's common stock under the Sales Agreement for net proceeds of $28.6 million, after deducting commissions and expenses.

In February 2024, the Company completed an underwritten public offering pursuant to which it sold 21.8 million shares of its common stock, including 4.5 million shares pursuant to the full exercise of the underwriters' option to purchase additional shares, and pre-funded warrants to purchase 12.7 million shares of its common stock for net proceeds of approximately $180.0 million, after deducting underwriting discounts and commissions and offering expenses.

The Company has incurred operating losses each year since inception and expects such losses to continue for the foreseeable future. As of September 30, 2025, the Company had cash, cash equivalents, and marketable securities of $153.1 million, and an accumulated deficit of $1.8 billion, which includes cumulative non-cash charges related to the revaluation of the success payment liabilities and contingent consideration of $11.3 million and $63.9 million, respectively. Based on the Company’s current operating plan, the Company believes that its existing cash, cash equivalents, and marketable securities as of September 30, 2025, together with the net proceeds received from the Offering and the ATM facility, will be sufficient to fund its planned operations for at least one year from the filing of this Quarterly Report. In assessing its ability to continue as a going concern, the Company carefully evaluated the conditions and events that may raise substantial doubt about its ability to continue operations for one year from the filing of this Quarterly Report. This evaluation considered several factors, including the Company’s current financial condition and available liquidity resources, including the proceeds from the Offering and the ATM facility.