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v3.23.3

Organization and Principal Activities - Additional Information (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 USD ($) shares | Sep. 30, 2023 USD ($) Segment shares | Dec. 31, 2022 USD ($)
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Date of incorporation |  | Apr. 21, 2003 |
Headquartered in |  | South San Francisco |
Headquartered in state |  | CA |
Number of operating segments | Segment |  | 1 |
Accumulated deficit | $ 590,473 | $ 590,473 | $ 452,615
Unrestricted cash, cash equivalents and marketable securities | 321,100 | $ 321,100 |
Substantial doubt about going concern, within one year |  | false |
Vaxcyte |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Unrestricted cash, cash equivalents and equity securities at carrying value | $ 34,000 | $ 34,000 |
At-the-Market (“ATM") | Common Stock |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Shares of common stock | shares | 0 | 1,857,410 |
Gross proceeds from issuance of common stock | $ 0 | $ 12,400 |
Underwriting discounts and commissions and other offering expenses | 0 | 400 |
Net proceeds from issuance of common stock | $ 0 | $ 12,000 |
Minimum |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Period from issuance date of unaudited interim condensed financial statements |  | 12 months |

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