Organization and Summary of Significant Accounting Policies	6 Months Ended
Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Summary of Significant Accounting Policies	1. Organization Dynavax Technologies Corporation (“we,” “our,” “us,” “Dynavax” or the “Company”) is a commercial stage biopharmaceutical company focused on developing and commercializing innovative vaccines in areas of significant unmet need, leveraging our demonstrated expertise and capabilities in vaccines and our proven, proprietary vaccine adjuvant technology. Our first marketed product, HEPLISAV-B® [Hepatitis B Vaccine (Recombinant), Adjuvanted] is approved in the United States, the European Union and Great Britain for the prevention of infection caused by all known subtypes of hepatitis B virus in adults aged 18 years and older. In May 2022, we commenced commercial shipments of HEPLISAV-B in Germany. We also manufacture and sell CpG 1018®, the adjuvant used in HEPLISAV-B, and have established a portfolio of global commercial supply agreements in the development of COVID-19 vaccines across a variety of vaccine platforms utilizing CpG 1018 adjuvant. As of June 30, 2023, we have satisfied all delivery obligations under these global commercial supply agreements. We are also advancing a multi-program clinical pipeline leveraging CpG 1018 adjuvant to develop improved vaccines in indications with unmet medical needs including Phase 1 clinical trials for Tdap and shingles, and a Phase 2 clinical trial for plague in collaboration with and fully funded by the U.S. Department of Defense ("DoD"). Additionally, we are working to advance product candidates utilizing our CpG 1018 adjuvant through discovery efforts and through preclinical and clinical collaborations with third-party research organizations, including an ongoing collaboration with the Icahn School of Medicine at Mount Sinai investigating universal and seasonal influenza vaccine candidates and Queensland Institute of Medical Research, testing poly T cell epitope proteins with other antigens in preclinical models. Basis of Presentation Our accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and pursuant to the instructions to Form 10-Q and Article 10 of Regulation S-X. In our opinion, these unaudited condensed consolidated financial statements include all adjustments, consisting of normal recurring adjustments, which we consider necessary to present fairly our financial position and the results of our operations and cash flows. As permitted under those rules, certain footnotes or other financial information that are normally required by GAAP have been condensed or omitted. Interim-period results are not necessarily indicative of results of operations or cash flows to be expected for a full-year period or any other interim-period. The condensed consolidated balance sheet as of December 31, 2022 has been derived from audited financial statements at that date, but excludes some disclosures required by GAAP for complete financial statements. The unaudited condensed consolidated financial statements and these notes should be read in conjunction with the audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2022, as filed with the Securities and Exchange Commission (the “SEC”). The unaudited condensed consolidated financial statements include the accounts of Dynavax and our wholly-owned subsidiaries, Dynavax GmbH, located in Düsseldorf, Germany, Dynavax India LLP, located in India, and a branch of Dynavax registered in Italy. All significant intercompany accounts and transactions among these entities have been eliminated from the unaudited condensed consolidated financial statements. We operate in one business segment: discovery, development and commercialization of novel vaccines. Use of Estimates The preparation of unaudited condensed consolidated financial statements in conformity with GAAP requires management to make informed estimates and assumptions that may affect the amounts reported in the unaudited condensed consolidated financial statements and accompanying notes, including amounts of revenues and expenses during the reported periods. Management’s estimates are based on historical information available as of the date of the unaudited condensed consolidated financial statements and various other assumptions we believe are reasonable under the circumstances. On an ongoing basis, we evaluate our estimates, judgments and methodologies. Significant estimates and assumptions in the unaudited condensed consolidated financial statements include those related to revenue recognition; accounts receivable; useful lives of long-lived assets; valuation procedures for right-of-use assets and operating lease liabilities; valuation of inventory; research and development expenses; contingencies and share-based compensation. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results may differ materially from these estimates under different assumptions or conditions. Changes in estimates are reflected in reported results in the period in which they become known. Recent Accounting Pronouncements Accounting Standards Update 2016-13 In June 2016, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses of Financial Instruments, which was codified in Accounting Standards Codification (“ASC”) 326, Financial Instruments — Credit Losses (“ASC 326"). The standard changes the methodology for measuring credit losses on financial instruments and the timing of when such losses are recorded. Because we were a smaller reporting company based on the most recent determination as of November 15, 2019, ASC 326 became effective for us for fiscal years beginning after December 15, 2022. As such, we adopted ASC 326 effective January 1, 2023, utilizing the modified retrospective transition method. Upon adoption, we updated our impairment model to utilize a forward-looking current expected credit losses (“CECL”) model in place of the incurred loss methodology for financial instruments measured at amortized cost, primarily including our accounts receivable and contract asset. In relation to available-for-sale (“AFS") debt securities, the guidance eliminates the concept of “other-than-temporary” impairment, and instead focuses on determining whether any impairment is a result of a credit loss or other factors. The adoption of ASC 326 did not have a material impact on our unaudited condensed consolidated financial statements as of the adoption date.

Organization and Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Summary of Significant Accounting Policies

1. Organization

Dynavax Technologies Corporation (“we,” “our,” “us,” “Dynavax” or the “Company”) is a commercial stage biopharmaceutical company focused on developing and commercializing innovative vaccines in areas of significant unmet need, leveraging our demonstrated expertise and capabilities in vaccines and our proven, proprietary vaccine adjuvant technology. Our first marketed product, HEPLISAV-B® [Hepatitis B Vaccine (Recombinant), Adjuvanted] is approved in the United States, the European Union and Great Britain for the prevention of infection caused by all known subtypes of hepatitis B virus in adults aged 18 years and older. In May 2022, we commenced commercial shipments of HEPLISAV-B in Germany. We also manufacture and sell CpG 1018®, the adjuvant used in HEPLISAV-B, and have established a portfolio of global commercial supply agreements in the development of COVID-19 vaccines across a variety of vaccine platforms utilizing CpG 1018 adjuvant. As of June 30, 2023, we have satisfied all delivery obligations under these global commercial supply agreements.

We are also advancing a multi-program clinical pipeline leveraging CpG 1018 adjuvant to develop improved vaccines in indications with unmet medical needs including Phase 1 clinical trials for Tdap and shingles, and a Phase 2 clinical trial for plague in collaboration with and fully funded by the U.S. Department of Defense ("DoD"). Additionally, we are working to advance product candidates utilizing our CpG 1018 adjuvant through discovery efforts and through preclinical and clinical collaborations with third-party research organizations, including an ongoing collaboration with the Icahn School of Medicine at Mount Sinai investigating universal and seasonal influenza vaccine candidates and Queensland Institute of Medical Research, testing poly T cell epitope proteins with other antigens in preclinical models.

Basis of Presentation

Our accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and pursuant to the instructions to Form 10-Q and Article 10 of Regulation S-X. In our opinion, these unaudited condensed consolidated financial statements include all adjustments, consisting of normal recurring adjustments, which we consider necessary to present fairly our financial position and the results of our operations and cash flows. As permitted under those rules, certain footnotes or other financial information that are normally required by GAAP have been condensed or omitted. Interim-period results are not necessarily indicative of results of operations or cash flows to be expected for a full-year period or any other interim-period.

The condensed consolidated balance sheet as of December 31, 2022 has been derived from audited financial statements at that date, but excludes some disclosures required by GAAP for complete financial statements.

The unaudited condensed consolidated financial statements and these notes should be read in conjunction with the audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2022, as filed with the Securities and Exchange Commission (the “SEC”).

The unaudited condensed consolidated financial statements include the accounts of Dynavax and our wholly-owned subsidiaries, Dynavax GmbH, located in Düsseldorf, Germany, Dynavax India LLP, located in India, and a branch of Dynavax registered in Italy. All significant intercompany accounts and transactions among these entities have been eliminated from the unaudited condensed consolidated financial statements. We operate in one business segment: discovery, development and commercialization of novel vaccines.

Use of Estimates

The preparation of unaudited condensed consolidated financial statements in conformity with GAAP requires management to make informed estimates and assumptions that may affect the amounts reported in the unaudited condensed consolidated financial statements and accompanying notes, including amounts of revenues and expenses during the reported periods. Management’s estimates are based on historical information available as of the date of the unaudited condensed consolidated financial statements and various other assumptions we believe are reasonable under the circumstances. On an ongoing basis, we evaluate our estimates, judgments and methodologies. Significant estimates and assumptions in the unaudited condensed consolidated financial statements include those related to revenue recognition; accounts receivable; useful lives of long-lived assets; valuation procedures for right-of-use assets and operating lease liabilities; valuation of inventory; research and development expenses; contingencies and share-based compensation. We base our estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results may differ materially from these estimates under different assumptions or conditions. Changes in estimates are reflected in reported results in the period in which they become known.

Recent Accounting Pronouncements

Accounting Standards Update 2016-13

In June 2016, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses of Financial Instruments, which was codified in Accounting Standards Codification (“ASC”) 326, Financial Instruments — Credit Losses (“ASC 326"). The standard changes the methodology for measuring credit losses on financial instruments and the timing of when such losses are recorded. Because we were a smaller reporting company based on the most recent determination as of November 15, 2019, ASC 326 became effective for us for fiscal years beginning after December 15, 2022. As such, we adopted ASC 326 effective January 1, 2023, utilizing the modified retrospective transition method. Upon adoption, we updated our impairment model to utilize a forward-looking current expected credit losses (“CECL”) model in place of the incurred loss methodology for financial instruments measured at amortized cost, primarily including our accounts receivable and contract asset. In relation to available-for-sale (“AFS") debt securities, the guidance eliminates the concept of “other-than-temporary” impairment, and instead focuses on determining whether any impairment is a result of a credit loss or other factors. The adoption of ASC 326 did not have a material impact on our unaudited condensed consolidated financial statements as of the adoption date.