FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Hack Andrew A. F.
2. Issuer Name and Ticker or Trading Symbol

DYNAVAX TECHNOLOGIES CORP [ DVAX ]
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__X__ Director                    _____ 10% Owner
_____ Officer (give title below)    _____ Other (specify below)
(Last)          (First)          (Middle)

C/O BAIN CAPITAL LIFE SCIENCES INVESTORS, 200 CLARENDON STREET
3. Date of Earliest Transaction (MM/DD/YYYY)

8/9/2021
(Street)

BOSTON, MA 02116
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 8/9/2021  C(3)  2249000 (3)A$0.00 10774000 I See footnotes (1)(2)
Common Stock 8/9/2021  S  2250000 D$10.80 8524000 I See footnotes (1)(2)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security3. Trans. Date3A. Deemed Execution Date, if any4. Trans. Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
6. Date Exercisable and Expiration Date7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Series B Convertible Preferred Stock $0.00 8/9/2021  C (3)    2249  8/12/2019  (3)Common Stock 2249000 (3)$0.00 1891 I See footnotes (1)(2)

Explanation of Responses:
(1) Represents securities held directly by Bain Capital Life Sciences Fund, L.P. ("BCLS") and BCIP Life Sciences Associates, LP ("BCIPLS" and, together with BCLS, the "Bain Capital Life Sciences Entities").
(2) Bain Capital Life Sciences Investors, LLC ("BCLSI") is the ultimate general partner of BCLS and governs the investment strategy and decision-making process with respect to investments held by BCIPLS. Dr. Hack is a Managing Director of BCLSI. By virtue of the relationships described in this footnote, Dr. Hack may be deemed to share voting and dispositive power with respect to the securities held by the Bain Capital Life Sciences Entities. Dr. Hack disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.
(3) Each share of Series B Convertible Preferred Stock is convertible, at the option of the holder, into 1,000 shares of the Issuer's common stock and has no expiration date. The Series B Convertible Preferred Stock is not convertible if, as a result of such conversion, the holder, together with its affiliates, would beneficially own more than 9.99% of the total number of shares of the Issuer's common stock then issued and outstanding immediately after giving effect to the conversion. On August 9, 2021, the Bain Capital Life Sciences Entities converted an aggregate of 2,249 shares of Series B Convertible Preferred Stock into an aggregate of 2,249,000 shares of the Issuer's common stock.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Hack Andrew A. F.
C/O BAIN CAPITAL LIFE SCIENCES INVESTORS
200 CLARENDON STREET
BOSTON, MA 02116
X



Signatures
/s/ Andrew Hack8/11/2021
**Signature of Reporting PersonDate

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