Preferred Stock	6 Months Ended
Jun. 30, 2022
Equity [Abstract]
Preferred Stock	7. Preferred Stock Convertible Preferred Stock The Series A preferred stock and Series B preferred stock, described in more detail below, converted into 10,285,077 shares and 9,251,793 shares of common stock in January 2022 as part of our IPO. Series A Convertible Preferred Stock and Series A Preferred Stock Tranche Obligation On September 18, 2020, the Company entered into the Series A Convertible Preferred Stock Purchase Agreement with its initial investors committing to purchase an aggregate of $50.0 million in shares of Series A convertible preferred stock. At the initial closing, 9,815,467 shares of Series A convertible preferred stock were issued by the Company at a purchase price of $2.547 per share, for gross cash proceeds of $25.0 million. The gross proceeds were offset by $0.2 million of issuance costs and $0.2 million related to the Series A Preferred Stock Tranche Obligation, discussed below. Included in the terms of the September 2020 Series A Convertible Preferred Stock Purchase Agreement were certain rights (“Series A Preferred Stock Tranche Obligation”) granted to the investors who purchased the Series A convertible preferred stock in September 2020. The Series A Preferred Stock Tranche Obligation contingently obligated the investors to purchase, and the Company to sell, up to an aggregate of 7,852,373 shares of Series A convertible preferred stock at $2.547 per share upon the satisfaction of specified research and development milestones by the Company. The Company concluded that the Series A Preferred Stock Tranche Obligation met the definition of a freestanding financial instrument, as the Series A Preferred Stock Tranche Obligation was legally detachable and separately exercisable from the Series A convertible preferred stock. Therefore, the Company allocated the proceeds from the September 2020 issuance between the Series A Preferred Stock Tranche Obligation and the Series A convertible preferred stock, including those issued in exchange for the SAFE. As the Series A convertible preferred stock is redeemable upon a deemed liquidation event at the election of the holder-controlled Board, and therefore outside of the control of the Company, the Series A Preferred Stock Tranche Obligation was classified as a liability and recorded at its fair value of $0.3 million at both inception and as of December 31, 2020. The Series A Preferred Stock Tranche Obligation was remeasured at fair value at each reporting period, with changes in fair value recorded in change in fair value of the Series A Preferred Stock Tranche Obligation in the condensed consolidated statements of operations and comprehensive loss (see Note 3). On May 28, 2021, the Company issued 7,852,373 shares of its Series A convertible preferred stock at $2.547 per share, for which the Company received gross proceeds of $20.0 million, offset by issuance costs of $0.1 million. As a result of this issuance, the Series A Preferred Stock Tranche Obligation with a then fair value of approximately $0.3 million was settled and reclassified to Series A convertible preferred stock in the consolidated balance sheet. Series B Convertible Preferred Stock Financing On August 13, 2021, the Company issued 25,657,096 shares of its Series B convertible preferred stock at $3.5078 per share, for which the Company received gross proceeds of $90.0 million. Issuance costs were $0.4 million. Upon issuance of each class of the Convertible Preferred Stock, the Company assessed the embedded conversion and liquidation features of the securities and determined that such features did not require the Company to separately account for these features. The Company also concluded that no beneficial conversion feature existed upon the issuance date of each class of the Convertible Preferred Stock or as of December 31, 2021 and January 2022, when the Company completed its IPO. The holders of Convertible Preferred Stock had the followings rights and privileges: Conversion The holders of the Convertible Preferred Stock may convert, at any time, each share of the Convertible Preferred Stock into shares of common stock. In addition, upon either (a) the closing of the sale of shares of common stock to the public at a price of at least three times the Series A Original Issue Price (subject to adjustment) in an initial public offering with net proceeds to the Company of at least $50.0 million or (b) the written consent of the holders of the outstanding shares of Convertible Preferred Stock, the Convertible Preferred Stock will automatically convert into common stock. The conversion ratio of each series of the Convertible Preferred Stock is determined by dividing the Original Issuance Price of each series by the Conversion Price of each series. The Original Issuance Price per share is $2.547 for Series A convertible preferred stock and $3.5078 for Series B convertible preferred stock. The Conversion Price per share at issuance was $7.063 for Series A convertible preferred stock and $9.7278 for Series B convertible preferred stock, each subject to appropriate adjustment in the event of any stock dividend, stock split, combination or other similar recapitalization and other adjustments, including adjustment if common stock is issued for less than the Original Issue Price of each series of Convertible Preferred Stock. Accordingly, as of December 31, 2021, each share of each series of Convertible Preferred Stock was convertible into shares of common stock on a one-for-one basis.

Preferred Stock

6 Months Ended

Jun. 30, 2022

7. Preferred Stock

Convertible Preferred Stock

The Series A preferred stock and Series B preferred stock, described in more detail below, converted into 10,285,077 shares and 9,251,793 shares of common stock in January 2022 as part of our IPO.

Series A Convertible Preferred Stock and Series A Preferred Stock Tranche Obligation

On September 18, 2020, the Company entered into the Series A Convertible Preferred Stock Purchase Agreement with its initial investors committing to purchase an aggregate of $50.0 million in shares of Series A convertible preferred stock. At the initial closing, 9,815,467 shares of Series A convertible preferred stock were issued by the Company at a purchase price of $2.547 per share, for gross cash proceeds of $25.0 million. The gross proceeds were offset by $0.2 million of issuance costs and $0.2 million related to the Series A Preferred Stock Tranche Obligation, discussed below.

Included in the terms of the September 2020 Series A Convertible Preferred Stock Purchase Agreement were certain rights (“Series A Preferred Stock Tranche Obligation”) granted to the investors who purchased the Series A convertible preferred stock in September 2020. The Series A Preferred Stock Tranche Obligation contingently obligated the investors to purchase, and the Company to sell, up to an aggregate of 7,852,373 shares of Series A convertible preferred stock at $2.547 per share upon the satisfaction of specified research and development milestones by the Company.

The Company concluded that the Series A Preferred Stock Tranche Obligation met the definition of a freestanding financial instrument, as the Series A Preferred Stock Tranche Obligation was legally detachable and separately exercisable from the Series A convertible preferred stock. Therefore, the Company allocated the proceeds from the September 2020 issuance between the Series A Preferred Stock Tranche Obligation and the Series A convertible preferred stock, including those issued in exchange for the SAFE. As the Series A convertible preferred stock is redeemable upon a deemed liquidation event at the election of the holder-controlled Board, and therefore outside of the control of the Company, the Series A Preferred Stock Tranche Obligation was classified as a liability and recorded at its fair value of $0.3 million at both inception and as of December 31, 2020. The Series A Preferred Stock Tranche Obligation was remeasured at fair value at each reporting period, with changes in fair value recorded in change in fair value of the Series A Preferred Stock Tranche Obligation in the condensed consolidated statements of operations and comprehensive loss (see Note 3).

On May 28, 2021, the Company issued 7,852,373 shares of its Series A convertible preferred stock at $2.547 per share, for which the Company received gross proceeds of $20.0 million, offset by issuance costs of $0.1 million. As a result of this issuance, the Series A Preferred Stock Tranche Obligation with a then fair value of approximately $0.3 million was settled and reclassified to Series A convertible preferred stock in the consolidated balance sheet.

Series B Convertible Preferred Stock Financing

On August 13, 2021, the Company issued 25,657,096 shares of its Series B convertible preferred stock at $3.5078 per share, for which the Company received gross proceeds of $90.0 million. Issuance costs were $0.4 million.

Upon issuance of each class of the Convertible Preferred Stock, the Company assessed the embedded conversion and liquidation features of the securities and determined that such features did not require the Company to separately account for these features. The Company also concluded that no beneficial conversion feature existed upon the issuance date of each class of the Convertible Preferred Stock or as of December 31, 2021 and January 2022, when the Company completed its IPO.

The holders of Convertible Preferred Stock had the followings rights and privileges:

Conversion

The holders of the Convertible Preferred Stock may convert, at any time, each share of the Convertible Preferred Stock into shares of common stock. In addition, upon either (a) the closing of the sale of shares of common stock to the public at a price of at least three times the Series A Original Issue Price (subject to adjustment) in an initial public offering with net proceeds to the Company of at least $50.0 million or (b) the written consent of the holders of the outstanding shares of Convertible Preferred Stock, the Convertible Preferred Stock will automatically convert into common stock.

The conversion ratio of each series of the Convertible Preferred Stock is determined by dividing the Original Issuance Price of each series by the Conversion Price of each series. The Original Issuance Price per share is $2.547 for Series A convertible preferred stock and $3.5078 for Series B convertible preferred stock. The Conversion Price per share at issuance was $7.063 for Series A convertible preferred stock and $9.7278 for Series B convertible preferred stock, each subject to appropriate adjustment in the event of any stock dividend, stock split, combination or other similar recapitalization and other adjustments, including adjustment if common stock is issued for less than the Original Issue Price of each series of Convertible Preferred Stock. Accordingly, as of December 31, 2021, each share of each series of Convertible Preferred Stock was convertible into shares of common stock on a one-for-one basis.