Summary of Significant Accounting Policies	3 Months Ended
Mar. 31, 2026
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies There have been no significant changes in the Company’s accounting policies from those disclosed in its Annual Financial Statements. Use of Estimates—The preparation of the financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income and expense during the reporting period. The most significant estimates relate to the accruals of research and development costs, including accruals of research contract costs, and assumptions used to estimate the fair value of the Company’s stock option awards. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment, and makes adjustments when facts and circumstances dictate. These estimates are based on information available as of the date of the financial statements; therefore, actual results could differ from those estimates. Net Loss per Share—The Company follows the two-class method when computing net income (loss) as the Company has issued shares that meet the definition of participating securities. The two-class method determines net income (loss) per common share for each class of common and participating securities according to dividends declared or accumulated and participation rights in undistributed earnings. The two-class method requires income (loss) available to common stockholders for the period to be allocated between common and participating securities based upon their respective rights to receive dividends as if all income for the period had been distributed. The Company considers the shares issued upon the early exercise of stock options that are subject to repurchase to be participating securities because holders of such shares have non-forfeitable dividend rights in the event a dividend is paid on common stock. There is no allocation required under the two-class method during periods of loss since the participating securities do not have a contractual obligation to share in the losses of the Company. Basic net income (loss) per common share is computed by dividing the net income (loss) per common share by the weighted-average number of common shares and pre-funded warrants to purchase shares of common stock outstanding for the period. In accordance with ASC Topic 260, Earnings per Share, the pre-funded warrants are included in the computation of basic net loss per share because the exercise price is negligible and they are fully vested and exercisable at any time after the original issuance date. Diluted net income (loss) per common share is computed by adjusting net income (loss) to reallocate undistributed earnings based on the potential impact of dilutive securities. Diluted net loss per common share is computed by dividing the diluted net loss by the weighted-average number of common shares outstanding for the period, including potential dilutive common shares. In periods in which the Company reported a net loss, diluted net loss per common share was the same as basic net loss per common share since dilutive common shares were not assumed to have been issued if their effect was anti-dilutive. During the three months ended March 31, 2026 and March 31, 2025, 20,859,412 and 5,445,060 total potential common shares, respectively, related to the exercise of outstanding stock options, settlement of outstanding restricted stock units ("RSUs"), settlement of outstanding RSUs that vest upon the achievement of certain performance conditions ("PRSUs"), and exercise of outstanding warrants, were excluded from the computation of diluted net loss per common share because including them would have had an anti-dilutive effect as the Company reported net losses for those periods. Stock Based Compensation Expense—The Company accounts for stock-based payment awards granted to employees and non-employees, as well as shares issued to its employees under the Company's 2023 Employee Stock Purchase Plan (the "2023 ESPP"), as stock-based compensation expense at fair value. The Company issues stock-based awards to employees and non-employees in the form of stock options and also issues stock-based awards to employees in the form of RSUs and PRSUs. The measurement date for employee stock option, RSU, and PRSU awards is the date of grant, and stock-based compensation costs for employee non-performance awards are recognized as expense over the employees’ requisite service period, which is the vesting period, on a graded basis. Compensation expense for equity awards with performance conditions, including PRSUs, is recognized if and when the Company concludes that it is probable that the performance conditions will be achieved. The Company reassesses the probability of vesting at each reporting period for equity awards with such performance conditions and adjusts compensation expense based on its probability assessment. The measurement date for non-employee awards is the date of grant without changes in the fair value of the award, and stock-based compensation costs for non-employees are recognized as expense over the vesting period on a graded basis. The measurement date for shares issued under the 2023 ESPP is the first date of each employee stock purchase plan offering period, and stock-based compensation costs are recognized as expense over the offering period on a straight-line basis. Stock-based compensation expense for all equity awards is classified in the accompanying statement of operations based on the function to which the related services are provided. As the Company is permitted to repurchase shares legally issued for unvested stock options exercised at their exercise price under the Company's 2021 Equity Incentive Plan (the "2021 Plan"), (i) cash received for unvested stock options exercised under the 2021 Plan is recorded as a deposit liability as a reclassification from additional paid-in capital in the Company’s balance sheet, which is relieved to additional paid-in capital as such awards vest, (ii) stock based compensation expense is recognized over the requisite service period for each such award, and (iii) the amount and number of shares of common stock outstanding in the Company’s balance sheet and statement of stockholders’ equity are reduced until such awards vest. Forfeitures are recorded as they occur. The fair value of each stock option grant under the 2021 Plan and the Company's 2023 Equity Incentive Plan (the "2023 Plan", and together with the 2021 Plan, the “Plans”), and shares issued under the 2023 ESPP, are estimated on the date of stock option grant or on the first date of each employee stock purchase plan offering period, respectively, using the Black-Scholes option-pricing model, while the fair value of each RSU and PRSU granted under the 2023 Plan is equal to the closing price of the Company's common stock on the date of the grant. Prior to its initial public offering ("IPO") on November 3, 2023, the Company was a private company and lacked company-specific historical and implied volatility information for stock options granted. Therefore, the Company estimated its expected stock volatility entirely based on the historical volatility of a publicly traded set of peer companies for stock options granted prior to its IPO, and estimates its expected stock price volatility primarily based on the historical volatility of a publicly traded set of peer companies for stock options granted since its IPO, each for a period equal to the expected life of the stock options granted, and expects to continue to do so until such time as it has adequate historical data regarding the volatility of its own traded stock price. The expected term of the Company’s stock options granted has been determined utilizing the “simplified” method for awards that qualify as “plain-vanilla” options and expects to continue to do so until such time as it has adequate historical data regarding the expected term of its own stock options. The risk-free interest rate is determined by reference to the U.S. Treasury yield curve in effect at the time of grant of the award for time periods approximately equal to the expected term of the award. The expected dividend yield is zero as the Company has never paid cash dividends on its common stock and does not expect to pay any cash dividends in the foreseeable future. Long-term Investment—The Company accounts for its long-term investment in nonredeemable convertible preferred stock in accordance with the provisions of ASC Topic 321, Investments - Equity Securities, and elected to use the measurement alternative therein. The fair value of the nonredeemable convertible preferred stock received was based upon an observable price of cash paid for an identical security in an orderly transaction with a third-party and was capitalized as a long-term investment in the Company's balance sheet and recorded as an unrealized gain to other non-operating income in the Company's statement of operations and comprehensive loss. The long-term investment will be remeasured upon future observable price change(s) in orderly transaction(s) or upon impairment, if any. Concentrations of Credit Risk—Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash, cash equivalents, restricted cash, and investments. The Company’s cash and restricted cash balances exceed Federal Deposit Insurance Corporation insurance limits. The Company’s cash equivalents consist of investments in U.S. government money market funds, and the Company's cash investments consist of U.S. Treasury securities. The Company’s cash, cash equivalents, and restricted cash are held with large financial institutions that management believes to be of high credit quality. To date, the Company has not recognized any losses caused by uninsured balances.

There have been no significant changes in the Company’s accounting policies from those disclosed in its Annual Financial Statements.

Use of Estimates—The preparation of the financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of income and expense during the reporting period. The most significant estimates relate to the accruals of research and development costs, including accruals of research contract costs, and assumptions used to estimate the fair value of the Company’s stock option awards. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment, and makes adjustments when facts and circumstances dictate. These estimates are based on information available as of the date of the financial statements; therefore, actual results could differ from those estimates.

Net Loss per Share—The Company follows the two-class method when computing net income (loss) as the Company has issued shares that meet the definition of participating securities. The two-class method determines net income (loss) per common share for each class of common and participating securities according to dividends declared or accumulated and participation rights in undistributed earnings. The two-class method requires income (loss) available to common stockholders for the period to be allocated between common and participating securities based upon their respective rights to receive dividends as if all income for the period had been distributed. The Company considers the shares issued upon the early exercise of stock options that are subject to repurchase to be participating securities because holders of such shares have non-forfeitable dividend rights in the event a dividend is paid on common stock. There is no allocation required under the two-class method during periods of loss since the participating securities do not have a contractual obligation to share in the losses of the Company.

Basic net income (loss) per common share is computed by dividing the net income (loss) per common share by the weighted-average number of common shares and pre-funded warrants to purchase shares of common stock outstanding for the period. In accordance with ASC Topic 260, Earnings per Share, the pre-funded warrants are included in the computation of basic net loss per share because the exercise price is negligible and they are fully vested and exercisable at any time after the original issuance date. Diluted net income (loss) per common share is computed by adjusting net income (loss) to reallocate undistributed earnings based on the potential impact of dilutive securities. Diluted net loss per common share is computed by dividing the diluted net loss by the weighted-average number of common shares outstanding for the period, including potential dilutive common shares.

In periods in which the Company reported a net loss, diluted net loss per common share was the same as basic net loss per common share since dilutive common shares were not assumed to have been issued if their effect was anti-dilutive. During the three months ended March 31, 2026 and March 31, 2025, 20,859,412 and 5,445,060 total potential common shares, respectively, related to the exercise of outstanding stock options, settlement of outstanding restricted stock units ("RSUs"), settlement of outstanding RSUs that vest upon the achievement of certain performance conditions ("PRSUs"), and exercise of outstanding warrants, were excluded from the computation of diluted net loss per common share because including them would have had an anti-dilutive effect as the Company reported net losses for those periods.

Stock Based Compensation Expense—The Company accounts for stock-based payment awards granted to employees and non-employees, as well as shares issued to its employees under the Company's 2023 Employee Stock Purchase Plan (the "2023 ESPP"), as stock-based compensation expense at fair value. The Company issues stock-based awards to employees and non-employees in the form of stock options and also issues stock-based awards to employees in the form of RSUs and PRSUs. The measurement date for employee stock option, RSU, and PRSU awards is the date of grant, and stock-based compensation costs for employee non-performance awards are recognized as expense over the employees’ requisite service period, which is the vesting period, on a graded basis. Compensation expense for equity awards with performance conditions, including PRSUs, is recognized if and when the Company concludes that it is probable that the performance conditions will be achieved. The Company reassesses the probability of vesting at each reporting period for equity awards with such performance conditions and adjusts compensation expense based on its probability assessment. The measurement date for non-employee awards is the date of grant without changes in the fair value of the award, and stock-based compensation costs for non-employees are recognized as expense over the vesting period on a graded basis. The measurement date for shares issued under the 2023 ESPP is the first date of each employee stock purchase plan offering period, and stock-based compensation costs are recognized as expense over the offering period on a straight-line basis. Stock-based compensation expense for all equity awards is classified in the accompanying statement of operations based on the function to which the related services are provided. As the Company is permitted to repurchase shares legally issued for unvested stock options exercised at their exercise price under the Company's 2021 Equity Incentive Plan (the "2021 Plan"), (i) cash received for unvested stock options exercised under the 2021 Plan is recorded as a deposit liability as a reclassification from additional paid-in capital in the Company’s balance sheet, which is relieved to additional paid-in capital as such awards vest, (ii) stock based compensation expense is recognized over the requisite service period for each such award, and (iii) the amount and number of shares of common stock outstanding in the Company’s balance sheet and statement of stockholders’ equity are reduced until such awards vest. Forfeitures are recorded as they occur.

The fair value of each stock option grant under the 2021 Plan and the Company's 2023 Equity Incentive Plan (the "2023 Plan", and together with the 2021 Plan, the “Plans”), and shares issued under the 2023 ESPP, are estimated on the date of stock option grant or on the first date of each employee stock purchase plan offering period, respectively, using the Black-Scholes option-pricing model, while the fair value of each RSU and PRSU granted under the 2023 Plan is equal to the closing price of the Company's common stock on the date of the grant. Prior to its initial public offering ("IPO") on November 3, 2023, the Company was a private company and lacked company-specific historical and implied volatility information for stock options granted. Therefore, the Company estimated its expected stock volatility entirely based on the historical volatility of a publicly traded set of peer companies for stock options granted prior to its IPO, and estimates its expected stock price volatility primarily based on the historical volatility of a publicly traded set of peer companies for stock options granted since its IPO, each for a period equal to the expected life of the stock options granted, and expects to continue to do so until such time as it has adequate historical data regarding the volatility of its own traded stock price. The expected term of the Company’s stock options granted has been determined utilizing the “simplified” method for awards that qualify as “plain-vanilla” options and expects to continue to do so until such time as it has adequate historical data regarding the expected term of its own stock options. The risk-free interest rate is determined by reference to the U.S. Treasury yield curve in effect at the time of grant of the award for time periods approximately equal to the expected term of the award. The expected dividend yield is zero as the Company has never paid cash dividends on its common stock and does not expect to pay any cash dividends in the foreseeable future.