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 *
Sanderling Venture Partners V, LP
  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)
400 SOUTH EL CAMINO REAL, SUITE 1200
3. Date of Earliest Transaction (Month/Day/Year)
04/16/2013
(Street)

SAN MATEO, CA 94402
4. If Amendment, Date Original Filed(Month/Day/Year)
04/16/2013
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   792,037 A (1) 4,255,826 (2) I SEE FOOTNOTE (3)

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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
Sanderling Venture Partners V, LP
400 SOUTH EL CAMINO REAL
SUITE 1200
SAN MATEO, CA 94402
    X    
SANDERLING V BIOMEDICAL LP
400 SOUTH EL CAMINO REAL
SUITE 1200
SAN MATEO, CA 94402
    X    
SANDERLING V LTD PARTNERSHIP
400 SOUTH EL CAMINO REAL STE 1200
SAN MATEO, CA 94402-1708
    X    
SANDERLING V BETEILIGUNGS GMBH & CO KG
400 SOUTH EL CAMINO REAL
STE 1200
SAN MATEO, CA 94402-1708
    X    
SANDERLING VENTURES MANAGEMENT V
400 SOUTH EL CAMINO REAL STE 1200
SAN MATEO, CA 94402-1708
    X    
SANDERLING V BIOMEDICAL CO INVESTMENT FUND LP
400 S EL CAMINO REAL
STE 1200
SAN MATEO, CA 94402-1708
    X    
Sanderling Venture Partners V Co Investment Fund, LP
400 SOUTH EL CAMINO REAL
SUITE 1200
SAN MATEO, CA 94402
    X    
Sanderling V Strategic Exit Fund LP
400 S. EL CAMINO REAL
SUITE 1200
SAN MATEO, CA 94402
    X    
Sanderling Venture Partners VI Co Investment Fund LP
400 SOUTH EL CAMINO REAL STE 1200
SAN MATEO, CA 94402-1708
    X    
Sanderling VI Beteiligungs GmbH & Co KG
400 S. EL CAMINO REAL, SUITE 1200
SAN MATEO, CA 94402
    X    

Signatures

 See Signatures Included in Exhibit 99.2   05/28/2013
**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 F Preferred Stock automatically converted into 1 share of Common Stock for no additional consideration and had no expiration date.
(2) Amends the amount of securities beneficially owned following reported transactions which was understated by 112,674 shares in the original filing.
(3) See attached Exhibit 99.1
 
Remarks:
Form 4 filing 1 of 2. See Form 4 filing 2 of 2 for additional members of this joint filing.

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

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