# EDGAR Filing Document

**Accession Number:** 0001029142
**File Stem:** 0001193125-26-044629
**Filing Date:** 2026-2
**Character Count:** 14742
**Document Hash:** d69783a7e3556fe3f49b5af56236b213
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-044629.hdr.sgml**: 20260210

**ACCESSION NUMBER**: 0001193125-26-044629

**CONFORMED SUBMISSION TYPE**: S-8 POS

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260210

**DATE AS OF CHANGE**: 20260210

**EFFECTIVENESS DATE**: 20260210

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** DYNAVAX TECHNOLOGIES CORP
- **CENTRAL INDEX KEY:** 0001029142
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 330728374
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** S-8 POS
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-136345
- **FILM NUMBER:** 26615863

**BUSINESS ADDRESS:**
- **STREET 1:** 2100 POWELL STREET
- **STREET 2:** SUITE 720
- **CITY:** EMERYVILLE
- **STATE:** CA
- **ZIP:** 94608
- **BUSINESS PHONE:** 5108485100

**MAIL ADDRESS:**
- **STREET 1:** 2100 POWELL STREET
- **STREET 2:** SUITE 720
- **CITY:** EMERYVILLE
- **STATE:** CA
- **ZIP:** 94608

**As filed with the Securities and Exchange Commission on February 10, 2026** 

**Registration No. 333-113220** 

**Registration No. 333-136345** 

**Registration No. 333-145094** 

**Registration No. 333-152819** 

**Registration No. 333-157741** 

**Registration No. 333-164255** 

**Registration No. 333-171552** 

**Registration No. 333-190313** 

**Registration No. 333-197838** 

**Registration No. 333-204506** 

**Registration No. 333-211747** 

**Registration No. 333-218470** 

**Registration No. 333-221832** 

**Registration No. 333-225525** 

**Registration No. 333-233247** 

**Registration No. 333-241674** 

**Registration No. 333-253515** 

**Registration No. 333-258469** 

**Registration No. 333-265373** 

**Registration No. 333-281307** 

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**WASHINGTON, D.C. 20549** 

**POST-EFFECTIVE AMENDMENT NO. 1 TO:** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-113220** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-136345** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-145094** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-152819** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-157741** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-164255** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-171552** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-190313** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-197838** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-204506** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-211747** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-218470** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-221832** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-225525** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-233247** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-241674** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-253515** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-258469** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-265373** 

**FORM S-8 REGISTRATION STATEMENT NO. 333-281307** 

***UNDER***

***THE SECURITIES ACT OF 1933***

## Dynavax Technologies Corporation
**(Exact name of registrant as specified in its charter)** 

---

| | |
|:---|:---|
| **Delaware** | **33-0728374** |
| **(State or other jurisdiction**<br> **of incorporation or organization)** | **(I.R.S. Employer**<br> **Identification No.)** |
| **2100 Powell Street, Suite 720**<br> **Emeryville, CA** | **94608** |
| **(Address of Principal Executive Offices)** | **(Zip Code)** |

---

**Dynavax Technologies Corporation1997 Equity Incentive Plan** 

**Dynavax Technologies Corporation 2004 Stock Incentive Plan** 

**Dynavax Technologies Corporation 2004 Employee Stock Purchase Plan** 

**Dynavax Technologies Corporation 2010 Employee Inducement Award Plan** 

**Dynavax Technologies Corporation 2011 Equity Incentive Plan, as amended and restated** 

**Dynavax Technologies Corporation 2014 Employee Stock Purchase Plan, as amended and restated** 

**Dynavax Technologies Corporation 2017 Inducement Award Plan** 

**Dynavax Technologies Corporation 2018 Equity Incentive Plan, as amended and restated** 

**Dynavax Technologies Corporation 2021 Inducement Award Plan** 

**(Full title of the plan)** 

**Thomas Grenier** 

**Vice President** 

**Dynavax Technologies Corporation** 

**2100 Powell Street, Suite 720** 

**Emeryville, CA 94608** 

**(510) 665-4618** 

**(Name, address and telephone number of agent for service)** 

***Copies to:***

**Michael J. Aiello, Esq.** 

**Sachin Kohli, Esq.** 

**Weil, Gotshal & Manges LLP** 

**767 Fifth Avenue** 

**New York, New York 10153** 

**(212) 310-8000** 

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer a smaller reporting company or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the Exchange Act.

---

| | | | |
|:---|:---|:---|:---|
| Large accelerated filer | ☒ | Accelerated filer | ☐ |
| Non-accelerated filer | ☐ | Smaller reporting company | ☐ |
|  |  | Emerging growth company | ☐ |

---

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

------

**EXPLANATORY NOTE** 

**DEREGISTRATION OF SHARES** 

Dynavax Technologies Corporation, a Delaware corporation (the "<u>Re</u>g<u>istrant</u>"), is filing with the U.S. Securities and Exchange Commission these post-effective amendments (the "<u>Post-Effective Amendments</u>") to deregister all shares of common stock, par value $0.001 per share, of the Registrant (the "<u>Shares</u>"), previously registered under the following Registration Statements on Form S-8 (the "<u>Re</u>g<u>istration Statements</u>"), together with any and all plan interests and other securities registered thereunder:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No [333-113220](http://www.sec.gov/Archives/edgar/data/1029142/000095014904000517/f96950sv8.htm) , filed on March 2, 2004, relating to the registration of 1,532,527 Shares under the Dynavax Technologies Corporation 1997 Equity Incentive Plan, 3,500,000 Shares under the Dynavax Technologies
Corporation 2004 Stock Incentive Plan (" <u>2004 SIP</u> ") and 250,000 Shares under the Dynavax Technologies Corporation 2004 Employee Stock Purchase Plan (" <u>2004 ESPP</u> ");

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-136345](http://www.sec.gov/Archives/edgar/data/1029142/000095014906000428/f22627sv8.htm) , filed on August 4, 2006, relating to the registration of 800,000 Shares under the 2004 SIP and 246,000 Shares under the 2004 ESPP;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-145094](http://www.sec.gov/Archives/edgar/data/1029142/000095013407016726/f32461sv8.htm) , filed on August 3, 2007, relating to the registration of 400,000 Shares under the 2004 SIP;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-152819](http://www.sec.gov/Archives/edgar/data/1029142/000119312508168379/ds8.htm) , filed on August 6, 2008, relating to the registration of 400,000 Shares under the 2004 SIP;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-157741](http://www.sec.gov/Archives/edgar/data/1029142/000119312509047288/ds8.htm) , filed on March 6, 2009, relating to the registration of 400,000 Shares under the 2004 SIP;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-164255](http://www.sec.gov/Archives/edgar/data/1029142/000119312510003404/ds8.htm) , filed on January 8, 2010, relating to the registration of 400,000 Shares under the 2004 SIP, 250,000 Shares under the 2004 ESPP, and 1,500,000 Shares under the Dynavax Technologies Corporation 2010
Employment Inducement Award Plan;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-171552](http://www.sec.gov/Archives/edgar/data/1029142/000119312511002250/ds8.htm) , filed on January 6, 2011, relating to the registration of 15,000,000 Shares under the Dynavax Technologies Corporation 2011 Equity Incentive Plan, as amended, and 250,000 Shares under the 2004 ESPP;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-190313](http://www.sec.gov/Archives/edgar/data/1029142/000119312513315103/d577024ds8.htm) , filed on August 1, 2013, relating to the registration of 10,000,000 Shares under the Dynavax Technologies Corporation Amended and Restated 2011 Equity Incentive Plan (" <u>A&R 2011 EIP</u> ");

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-197838](http://www.sec.gov/Archives/edgar/data/1029142/000119312514293671/d768838ds8.htm) , filed on August 4, 2014, relating to the registration of 500,000 Shares under the Dynavax Technologies Corporation 2014 Employee Stock Purchase Plan, as amended;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-204506](http://www.sec.gov/Archives/edgar/data/1029142/000156459015004695/dvax-s8_20150528.htm) , filed on May 28, 2015, relating to the registration of 2,250,000 Shares under the A&R 2011 EIP;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-211747](http://www.sec.gov/Archives/edgar/data/1029142/000119312516609935/d200076ds8.htm) , filed on June 1, 2016, relating to the registration of 3,200,000 Shares under the A&R 2011 EIP and 200,000 Shares under the Dynavax Technologies Corporation Amended and Restated 2014
Employee Stock Purchase Plan (" <u>A&R 2014 ESPP</u> ");

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-218470](http://www.sec.gov/Archives/edgar/data/1029142/000156459017012065/dvax-s8.htm) , filed on June 2, 2017, relating to the registration of 1,600,000 Shares under the A&R 2011 EIP;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-221832](http://www.sec.gov/Archives/edgar/data/1029142/000119312517357411/d502404ds8.htm) , filed on November 30, 2017, relating to the registration of 1,200,000 Shares under the Dynavax Technologies Corporation 2017 Inducement Award Plan;

------

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-225525](http://www.sec.gov/Archives/edgar/data/1029142/000119312518188034/d602098ds8.htm) , filed on June 8, 2018, relating to the registration of 600,000 Shares under the A&R 2014 ESPP and 12,617,869 Shares under the Dynavax Technologies Corporation 2018 Equity Incentive Plan, as
amended;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-233247](http://www.sec.gov/Archives/edgar/data/1029142/000119312519220024/d782073ds8.htm) , filed on August 13, 2019, relating to the registration of 2,300,000 Shares under the Dynavax Technologies Corporation Amended and Restated 2018 Equity Incentive Plan (" <u>A&R 2018 EIP</u> ");

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-241674](http://www.sec.gov/Archives/edgar/data/1029142/000156459020037827/dvax-s8.htm) , filed on August 6, 2020, relating to the registration of 7,600,000 Shares under the A&R 2018 EIP;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-253515](http://www.sec.gov/Archives/edgar/data/1029142/000156459021008881/dvax-s8.htm) , filed on February 25, 2021, relating to the registration of 1,500,000 Shares under the Dynavax Technologies Corporation 2021 Inducement Award Plan;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-528469](http://www.sec.gov/Archives/edgar/data/1029142/000119312521236446/d100739ds8.htm) , filed on August 4, 2021, relating to the registration of 1,000,000 Shares under the A&R 2014 ESPP and 1,750,000 Shares under the Dynavax Technologies Corporation 2021 Inducement Award Plan;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-265373](http://www.sec.gov/Archives/edgar/data/1029142/000156459022022232/dvax-s8.htm) , filed on June 2, 2022, relating to the registration of 15,000,000 Shares under the A&R 2018 EIP; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Registration Statement No. [333-281307](http://www.sec.gov/Archives/edgar/data/1029142/000095017024091969/dvax-20240806.htm) , filed on August 6, 2024, relating to the registration of 11,400,000 Shares under the A&R 2018 EIP.

On February 10, 2026, pursuant to the terms of the Agreement and Plan of Merger, dated as of December 23, 2025, by and among the Registrant, Sanofi, a French *société anonyme* ("<u>Sanofi</u>") and Samba Merger Sub, Inc., a Delaware corporation and wholly owned subsidiary of Genzyme ("<u>Purchaser</u>"), Purchaser merged with and into the Registrant with the Registrant surviving the merger as a wholly owned subsidiary of Genzyme (the "<u>Merger</u>").

As a result of the Merger, the Registrant has terminated all offerings and sales pursuant to the Registration Statements. In accordance with an undertaking made by the Registrant in the Registration Statements to remove from registration, by means of a post-effective amendment, any of the securities registered under the Registration Statements that remain unsold at the termination of the offerings, the Registrant hereby amends the Registration Statements to remove from registration the Shares registered but remaining unsold under the Registration Statements.

------

**SIGNATURES** 

Pursuant to the requirements of the Securities Act of 1933, as amended, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused these Post-Effective Amendments to the Registration Statements to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Emeryville, State of California, on February 10, 2026.

---

| | |
|:---|:---|
| **DYNAVAX TECHNOLOGIES CORPORATION** | **DYNAVAX TECHNOLOGIES CORPORATION** |
| By: | /s/ Thomas Grenier |
| Name: | Thomas Grenier |
| Title: | Vice President |

---

Pursuant to Rule 478 of the Securities Act of 1933, as amended, no other person is required to sign these Post-Effective Amendments to the Registration Statements.