Company: DVAX
Filing Date: 2025-04-17
Form Type: PRRN14A
Source: 0001193125-25-084044
Chunk: 19

Company: DYNAVAX TECHNOLOGIES CORP
Filing Date: 2025-04-17
Form: PRRN14A
Chunk 19
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ors for their reasonable expenses incurred in attending meetings of the Board and committees of the Board. In addition, the below summarizes the Company’s equity compensation program for non-employeedirectors under the Director Compensation Policy:

| • |     | Each new director automatically receives an initial equity award (“Initial Grant”) upon the date each                                                                                           
 such person is elected or appointed to the Board that vests in equal annual installments over three years, provided the director continues to provide services to us through each vesting date; |

| • |     | The Initial Grant consists of a non-qualified stock option and an RSU,                                                                                                                                              
 together equal to the stock option equivalent of 60,000 shares of the Company’s common stock (under the Amended Director Compensation Policy, the Initial Grant decreased such that the Initial Grant consists of a 
 non-qualified stock option and an RSU, together equal to the stock option equivalent of 57,000 shares of our common stock);                                                                                         |

| • |     | On the date of each annual meeting of the stockholders, each non-employee                                                                                                                               
 director automatically receives a subsequent equity award (“Subsequent Grant”) that vests in full on the one-year anniversary of the grant date, provided the director continues to provide services to 
 us through each vesting date; and                                                                                                                                                                       |

| • |     | The Subsequent Grant consists of a non-qualified stock option and an RSU,                                                                                                                                                                                                                                                                             
 together equal to the stock option equivalent of 30,000 shares of the Company’s common stock (under the Amended Director Compensation Policy, the Subsequent Grant increased such that the Subsequent Grant consists of a non-qualified stock option and an RSU, together equal to the stock option equivalent of 38,000 shares of our common stock). |

Each Initial Grant and each Subsequent Grant under the Director Compensation Policy (as well as the Amended Director Compensation Policy) will be delivered such that approximately 75% of the value is delivered as a non-qualifiedstock option and approximately 25% of the value is delivered as an RSU, using the methodology for determining actual share amounts and the stock option to RSU award ratio most recently approved by the Board or the Compensation Committee. Also, under the Director Compensation Policy (as well as the Amended Director Compensation Policy), a non-employeedirector’s first Subsequent Grant is reduced to the following:

| • |     | 75% of the Subsequent Grant if the service period from the non-employee                                             
 director