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Company Organization and Nature of Business | 12 Months Ended
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Dec. 31, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract] |
Company Organization and Nature of Business | 1. Company Organization and Nature of Business Vaxcyte, Inc. (“we,” “us,” “the Company,” or “Vaxcyte”), headquartered in San Carlos, California, was incorporated in the state of Delaware on November 27, 2013 as SutroVax, Inc. and we changed our name to Vaxcyte, Inc. on May 15, 2020. We are a clinical-stage vaccine innovation company engineering high-fidelity vaccines to protect humankind from the consequences of bacterial diseases. We are developing broad-spectrum conjugate and novel protein vaccines to prevent or treat bacterial infectious diseases. We are re-engineering the way highly complex vaccines are made through modern synthetic techniques, including advanced chemistry and the XpressCF cell-free protein synthesis platform, exclusively licensed from Sutro Biopharma, Inc. Unlike conventional cell-based approaches, our system for producing difficult-to-make proteins and antigens is intended to accelerate our ability to efficiently create and deliver high-fidelity vaccines with enhanced immunological benefits. Our pipeline includes pneumococcal conjugate vaccine (“PCV”) candidates that we believe are among the most broad-spectrum PCV candidates currently in development, targeting the approximately $7 billion global pneumococcal vaccine market. Our lead vaccine candidate, VAX-24, is a 24-valent broad-spectrum investigational PCV being developed for the prevention of invasive pneumococcal disease, or IPD, and pneumonia. On January 6, 2022, we announced that the U.S. Food and Drug Administration, or FDA, cleared our investigational new drug, or IND, application for VAX-24 in adults. On February 23, 2022, we announced the initiation of our Phase 1/2 clinical proof-of-concept study in adults 18 to 64 years of age. We expect to announce topline safety, tolerability and immunogenicity results from this study by the end of 2022. Pending the successful completion of the Phase 1 portion of this study, we expect to begin enrollment in a separate Phase 2 study in healthy adults aged 65 and older and to announce topline safety, tolerability and immunogenicity results from this study in the first half of 2023. Subject to a pre-IND meeting with the FDA and the successful topline results of the Phase 1/2 proof-of-concept study in adults 18-64 years of age, we anticipate submitting a pediatric IND application to the FDA for VAX-24 in the first half of 2023. Our second PCV candidate, VAX-XP, leverages our scalable and modular platform and builds on the technical proof of concept established by VAX-24 and is designed to expand the breadth of coverage to greater than 30 strains without compromising immunogenicity due to carrier suppression. In addition to our PCV franchise, our pipeline includes VAX-A1, a novel conjugate vaccine candidate designed to prevent Group A Strep; VAX-PG, a novel protein vaccine candidate targeting the keystone pathogen responsible for periodontitis; and other discovery-stage programs. Our primary activities since incorporation have been to perform research and development, undertake preclinical studies and conduct manufacturing activities in support of our product development efforts; organize and staff the Company; establish our intellectual property portfolio; and raise capital to support and expand such activities. Reverse Stock Split On June 5, 2020, we filed a certificate of amendment to our amended and restated certificate of incorporation to effect a one-for-1.6870 reverse stock split of our issued and outstanding common stock, preferred stock, stock options and warrants effective on June 5, 2020. Accordingly, all share and per share amounts for all periods presented in the financial statements and notes thereto have been retroactively adjusted. Initial Public Offering In June 2020, we completed an initial public offering (“IPO”) in which we issued and sold 17,968,750 shares of common stock, including shares issued upon the exercise in full of the underwriters’ option to purchase 2,343,750 additional shares of common stock, at a public offering price of $16.00 per share. We received $264.0 million in net proceeds, after deducting underwriting discounts and commissions of $20.1 million and offering expenses of $3.4 million. Immediately prior to the completion of our IPO, all outstanding shares of redeemable convertible preferred stock were converted into 28,610,337 shares of common stock. Subsequent to the completion of the IPO, there were no shares of redeemable convertible preferred stock outstanding.

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