Ownership Submission
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

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Flynn James E
  2. Issuer Name and Ticker or Trading Symbol
DYNAVAX TECHNOLOGIES CORP [DVAX]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
780 THIRD AVENUE, 37TH FLOOR
3. Date of Earliest Transaction (Month/Day/Year)
10/22/2008
(Street)

NEW YORK, NY 10017
4. If Amendment, Date Original Filed(Month/Day/Year)
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction 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 (1) 10/22/2008   S   578,280 D $ 0.2569 938,121 I Through Deerfield Partners, L.P. (2)
Common Stock (1) 10/22/2008   S   55,463 D $ 0.2494 882,658 I Through Deerfield Partners, L.P. (2)
Common Stock (1) 10/22/2008   S   36,600 D $ 0.25 846,058 I Through Deerfield Partners, L.P. (2)
Common Stock (1) 10/22/2008   S   54,900 D $ 0.2795 791,158 I Through Deerfield Partners, L.P. (2)
Common Stock (1) 10/22/2008   S   23,740 D $ 0.2271 767,418 I Through Deerfield Partners, L.P. (2)
Common Stock (1) 10/22/2008   S   183,000 D $ 0.2393 584,418 I Through Deerfield Partners, L.P. (2)
Common Stock (1) 10/22/2008   S   129,981 D $ 0.2262 454,437 I Through Deerfield Partners, L.P. (2)
Common Stock (1) 10/22/2008   S   329,437 D $ 0.2415 125,000 I Through Deerfield Partners, L.P. (2)
Common Stock (1) 10/22/2008   S   125,000 D $ 0.245 0 I Through Deerfield Partners, L.P. (2)
Common Stock (1) 10/22/2008   S   1,001,720 D $ 0.2569 1,033,417 I Through Deerfield International, Limited (3)
Common Stock (1) 10/22/2008   S   96,075 D $ 0.2494 937,342 I Through Deerfield International, Limited (3)
Common Stock (1) 10/22/2008   S   63,400 D $ 0.25 873,942 I Through Deerfield International, Limited (3)
Common Stock (1) 10/22/2008   S   95,100 D $ 0.2795 778,842 I Through Deerfield International, Limited (3)
Common Stock (1) 10/22/2008   S   41,123 D $ 0.2271 737,719 I Through Deerfield International, Limited (3)
Common Stock (1) 10/22/2008   S   317,000 D $ 0.2393 420,719 I Through Deerfield International, Limited (3)
Common Stock (1) 10/22/2008   S   225,156 D $ 0.2262 195,563 I Through Deerfield International, Limited (3)
Common Stock (1) 10/22/2008   S   195,563 D $ 0.2415 0 I Through Deerfield International, Limited (3)
Common Stock (1) 10/22/2008   S   266,824 D $ 0.2659 166,765 I Through Deerfield Special Situations Fund, L.P. (2)
Common Stock (1) 10/22/2008   S   28,395 D $ 0.2227 138,370 I Through Deerfield Special Situations Fund, L.P. (2)
Common Stock (1) 10/22/2008   S   138,370 D $ 0.24 0 I Through Deerfield Special Situations Fund, L.P. (2)
Common Stock (1) 10/22/2008   S   533,176 D $ 0.2659 333,235 I Through Deerfield Special Situations Fund International Limited (3)
Common Stock (1) 10/22/2008   S   56,742 D $ 0.2227 276,493 I Through Deerfield Special Situations Fund International Limited (3)
Common Stock (1) 10/22/2008   S   276,493 D $ 0.24 0 I Through Deerfield Special Situations Fund International Limited (3)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(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)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Flynn James E
780 THIRD AVENUE
37TH FLOOR
NEW YORK, NY 10017
    X    
DEERFIELD CAPITAL LP
780 THIRD AVENUE
37TH FLOOR
NEW YORK, NY 10017
    X    
Deerfield Special Situations Fund, L.P.
780 3RD AVENUE
37TH FLOOR
NEW YORK, NY 10017
    X    
DEERFIELD MANAGEMENT CO /NY
780 THIRD AVENUE, 37TH FLOOR
NEW YORK, NY 10017
    X    
Deerfield Special Situations Fund International LTD
C/O HEMISPHERE MANAGEMENT (B.V.I.)
COLUMBUS CENTRE, P.O. BOX 3460
ROAD TOWN, TORTOLA, D8 -
    X    
DEERFIELD PRIVATE DESIGAN FUND L P
780 3RD AVE 37TH FL
NEW YORK, NY 10017
    X    
Deerfield Private Design International, L.P.
780 THIRD AVENUE, 37TH FLOOR
NEW YORK, NY 10017
    X    

Signatures

 /s/ Darren Levine, Attorney-In-Fact   10/24/2008
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) This Form 4 is being filed by James E. Flynn and by the entities listed on the Joint Filer Information Statement attached hereto (the "Reporting Persons").
(2) Deerfield Capital, L.P. is the general partner of Deerfield Partners, L.P., and Deerfield Special Situations Fund, L.P. (the "Domestic Funds"). James E. Flynn is the managing member of the general partner of Deerfield Capital, L.P. In accordance with Instruction 4(b)(iv) to Form 4, the entire amount of the Issuer's securities held by the Domestic Funds is reported herein. For purposes of Section 16 of the Securities Exchange Act of 1934, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its indirect pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.
(3) Deerfield Management Company, L.P. is the investment manager of Deerfield International Limited, L.P. and Deerfield Special Situations Fund International Limited (the "Offshore Funds"). James E. Flynn is the managing member of the general partner of Deerfield Management Company, L.P. In accordance with Instruction 4(b)(iv) to Form 4, the entire amount of the Issuer's securities held by the Offshore Funds is reported herein. For purposes of Section 16 of the Securities Exchange Act of 1934, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of his/its indirect pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise.
 
Remarks:
Darren Levine, Attorney-in-Fact: Power of Attorney which is hereby incorporated by reference to Exhibit 24 of the Form 4
 filed by the Reporting Persons on June 30, 2008 which respect to Dynavax Technologies Corp.

This Form 4 includes all transactions effected by the Reporting Persons in shares of the Issuer on October 22, 2008,
 regardless of at which point during said date the Reporting Persons cease being members of a 13(d) group beneficially
 owning greater than 10% of the outstanding shares of the Issuer.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.