XNAS:CCXI Chemocentryx Inc Insider Activity 4 Filing - 2/13/2012

Effective Date 2/13/2012

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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 *
GLAXOSMITHKLINE PLC
  2. Issuer Name and Ticker or Trading Symbol
ChemoCentryx, Inc. [CCXI]
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)
980 GREAT WEST ROAD
3. Date of Earliest Transaction (Month/Day/Year)
02/13/2012
(Street)

BRENTFORD MIDDLESEX, X0 TW8 9GS
4. If Amendment, Date Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
_X_ Form filed by One Reporting Person
___ 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 02/13/2012   C   3,246,753(1) A (1) 3,946,753 I By Corporation(3)
Common Stock 02/13/2012   C   3,396,739(2) A (2) 7,343,492 I By Corporation(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
Series D Preferred Stock (1) 02/13/2012   C     6,493,506   (1)   (1) Common Stock 3,246,753(1) $ 0 0 I By Corporation(3)
Series E Preferred Stock (2) 02/13/2012   C     6,793,478   (2)   (2) Common Stock 3,396,739(2) $ 0 0 I By Corporation(3)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
GLAXOSMITHKLINE PLC
980 GREAT WEST ROAD
BRENTFORD MIDDLESEX, X0 TW8 9GS
    X    

Signatures

 /s/ Victoria Whyte, Company Secretary   02/15/2012
** 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) The Series D Preferred Stock automatically converted to Common Stock at the closing of the Issuer's initial public offering on February 13, 2012 at a conversion ratio of one share of Common Stock for every two shares of Series D Preferred Stock, rounded down to the next whole number, for no additional consideration.
(2) The Series E Preferred Stock automatically converted to Common Stock at the closing of the Issuer's initial public offering on February 13, 2012 at a conversion ratio of one share of Common Stock for every two shares of Series E Preferred Stock, rounded down to the next whole number, for no additional consideration.
(3) Shares of Common Stock are held of record by Glaxo Group Limited, which is an indirect wholly-owned subsidiary of Reporting Person.

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.

XNAS:CCXI Chemocentryx Inc Insider Activity 4 Filling

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XNAS:CCXI Chemocentryx Inc Insider Activity 4 Filing - 2/13/2012
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