Redeemable Convertible Preferred Stock and Stockholders' Equity	12 Months Ended
Dec. 31, 2023
Equity [Abstract]
Redeemable Convertible Preferred Stock and Stockholders' Equity	12. Redeemable Convertible Preferred Stock and Stockholders' Equity "At-the-Market" Offering Program In May 2023, the Company entered into a sales agreement (Sales Agreement) with Stifel, Nicolaus & Company (Stifel) with respect to an at-the-market (ATM) offering program under which the Company may issue and sell, from time to time and at management’s sole discretion, shares of the Company’s common stock, in an aggregate offering amount of up to $350.0 million. No sales of the Company stock have been made under this arrangement as of December 31, 2023. Gilead SPA On January 26, 2023, the Company issued and sold an aggregate of 3,478,261 shares of common stock in a private placement to Gilead at a price of $28.75 per share for an aggregate purchase price of $100.0 million. The shares were sold pursuant to the Gilead SPA in connection with the Kite Collaboration Agreement and the transaction is considered part of the arrangement. The shares were sold at a discount of $4.39 per share as compared to the closing price of the stock on the date of the expiration of anti-trust provisions and accordingly, the $15.3 million discount is reflected as an increase to additional paid-in capital and decrease to the total fixed transaction price in the arrangement. On December 28, 2023, the Company issued and sold an aggregate of 3,242,542 shares of common stock in a private placement to Gilead at a price of $61.68 per share for an aggregate purchase price of $200.0 million. The shares were sold pursuant to the Second Gilead SPA in connection with the amendment to the Kite Collaboration Agreement and the transaction is considered part of the arrangement. The shares were sold at a premium of $4.80 per share as compared to the closing price of the stock on the date of the expiration of anti-trust provisions and accordingly, the $15.6 million premium is reflected as an increase to additional paid-in capital and decrease to the total fixed transaction price in the arrangement. See Note 8 - Collaboration Agreement. Common Stock Each share of common stock entitles the holder to one vote on all matters submitted to a vote of the Company’s stockholders. Common stockholders are entitled to receive dividends, as may be declared by the board of directors, if any. As of the date of the filing of this Annual Report on Form 10-K, no dividends have been declared or paid by the Company. In the event of any liquidation or dissolution of the Company, the holders of common stock are entitled to the assets of the Company legally available for distribution. Redeemable Convertible Preferred Stock In connection with the Company's IPO on February 4, 2022, all outstanding shares of the Company’s redeemable convertible preferred stock automatically converted into shares of common stock at the applicable conversion ratio then in effect. The Company's outstanding shares of preferred stock were converted into 24,785,564 shares of common stock.

Redeemable Convertible Preferred Stock and Stockholders' Equity

12 Months Ended

Dec. 31, 2023

Redeemable Convertible Preferred Stock and Stockholders' Equity

12. Redeemable Convertible Preferred Stock and Stockholders' Equity

"At-the-Market" Offering Program

In May 2023, the Company entered into a sales agreement (Sales Agreement) with Stifel, Nicolaus & Company (Stifel) with respect to an at-the-market (ATM) offering program under which the Company may issue and sell, from time to time and at management’s sole discretion, shares of the Company’s common stock, in an aggregate offering amount of up to $350.0 million. No sales of the Company stock have been made under this arrangement as of December 31, 2023.

Gilead SPA

On January 26, 2023, the Company issued and sold an aggregate of 3,478,261 shares of common stock in a private placement to Gilead at a price of $28.75 per share for an aggregate purchase price of $100.0 million. The shares were sold pursuant to the Gilead SPA in connection with the Kite Collaboration Agreement and the transaction is considered part of the arrangement. The shares were sold at a discount of $4.39 per share as compared to the closing price of the stock on the date of the expiration of anti-trust provisions and accordingly, the $15.3 million discount is reflected as an increase to additional paid-in capital and decrease to the total fixed transaction price in the arrangement.

On December 28, 2023, the Company issued and sold an aggregate of 3,242,542 shares of common stock in a private placement to Gilead at a price of $61.68 per share for an aggregate purchase price of $200.0 million. The shares were sold pursuant to the Second Gilead SPA in connection with the amendment to the Kite Collaboration Agreement and the transaction is considered part of the arrangement. The shares were sold at a premium of $4.80 per share as compared to the closing price of the stock on the date of the expiration of anti-trust provisions and accordingly, the $15.6 million premium is reflected as an increase to additional paid-in capital and decrease to the total fixed transaction price in the arrangement. See Note 8 - Collaboration Agreement.

Common Stock

Each share of common stock entitles the holder to one vote on all matters submitted to a vote of the Company’s stockholders. Common stockholders are entitled to receive dividends, as may be declared by the board of directors, if any. As of the date of the filing of this Annual Report on Form 10-K, no dividends have been declared or paid by the Company.

In the event of any liquidation or dissolution of the Company, the holders of common stock are entitled to the assets of the Company legally available for distribution.

Redeemable Convertible Preferred Stock

In connection with the Company's IPO on February 4, 2022, all outstanding shares of the Company’s redeemable convertible preferred stock automatically converted into shares of common stock at the applicable conversion ratio then in effect. The Company's outstanding shares of preferred stock were converted into 24,785,564 shares of common stock.