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

OMB APPROVAL OMB Number: 3235-0287 Expires: January 31, 2005 Estimated average burden hours per response... 0.5

(Print or Type Responses)

1. Name and Address of Reporting Person * Canaan VII L P   2. Issuer Name and Ticker or Trading Symbol CHIMERIX INC [CMRX] 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) 285 RIVERSIDE AVENUE, SUITE 250 3. Date of Earliest Transaction (Month/Day/Year) 04/16/2013 (Street) WESTPORT, CT 06880 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 04/16/2013   C   1,227,314 A (1) 1,227,314 I See Footnote (2) Common Stock 04/16/2013   C   826,474 A (3) 2,053,788 I See Footnote (2) Common Stock 04/16/2013   C   847,136 A (4) 3,047,978 (5) I See Footnote (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.		SEC 1474 (9-02)

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

Series D Preferred Stock

(1)

04/16/2012

C

4,356,968

(1)

(1)

Common Stock

1,227,314

$ 0

0

I

See Footnote (2)

Series E Preferred Stock

(3)

04/16/2012

C

2,933,986

(3)

(3)

Common Stock

826,474

$ 0

0

I

See Footnote (2)

Series F Preferred Stock

(4)

04/16/2012

C

3,007,335

(4)

(4)

Common Stock

847,136

$ 0

0

I

See Footnote (2)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Canaan VII L P 285 RIVERSIDE AVENUE, SUITE 250 WESTPORT, CT 06880		X
Canaan Partners VII LLC 285 RIVERSIDE AVENUE, SUITE 250 WESTPORT, CT 06880		X

Signatures

Canaan VII L.P., By: Canaan Partners VII LLC, its general partner, By: /s/ Jaime Slocum, Attorney-in-Fact		04/16/2013
**Signature of Reporting Person		Date
By: Canaan Partners VII LLC, By: /s/ Jaime Slocum, Attorney-in-Fact		04/16/2013
**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)	Upon the closing of the Issuer's initial public offering, every 3.55 shares of Series D Preferred Stock automatically converted into 1 share of Common Stock for no additional consideration and had no expiration date.
(2)	Canaan Partners VII LLC (Canaan VII) is the sole General Partner of Canaan VII L.P. (together with Canaan VII, the "Canaan Entities") and each may be deemed to have sole voting and investment power over the securities held by the Reporting Person. Wende S. Hutton, a manager of Canaan VII, serves as the representative of the Canaan Entities on the Issuer's board of directors.
(3)	Upon the closing of the Issuer's initial public offering, every 3.55 shares of Series E Preferred Stock automatically converted into 1 share of Common Stock for no additional consideration and had no expiration date.
(4)	Upon the closing of the Issuer's initial public offering, every 3.55 shares of Series F Preferred Stock automatically converted into 1 share of Common Stock for no additional consideration and had no expiration date.
(5)	Includes 147,054 shares issued as payment of accrued dividends on the Series F Preferred Stock.

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.