Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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 *
  Kwan Pui San
 2. Date of Event Requiring Statement (Month/Day/Year)
03/05/2018		 3. Issuer Name and Ticker or Trading Symbol
ChemoCentryx, Inc. [CCXI]
(Last)
(First)
(Middle)
C/O CHEMOCENTRYX, INC., 850 MAUDE AVENUE		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Principal Acctg Officer
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

MOUNTAIN VIEW, CA 94043		 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 Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 18,749
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (right to buy)   (1) 12/31/2022 Common Stock 25,000 $ 10.94 D  
Stock Option (right to buy)   (2) 07/23/2023 Common Stock 7,000 $ 14.28 D  
Stock Option (right to buy)   (3) 01/02/2024 Common Stock 30,000 $ 6.08 D  
Stock Option (right to buy)   (4) 02/23/2025 Common Stock 37,300 $ 8.19 D  
Stock Option (right to buy)   (5) 03/07/2026 Common Stock 40,000 $ 3.57 D  
Stock Option (right to buy)   (6) 02/28/2027 Common Stock 40,000 $ 6.62 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Kwan Pui San
C/O CHEMOCENTRYX, INC.
850 MAUDE AVENUE
MOUNTAIN VIEW, CA 94043		       Principal Acctg Officer  

Signatures

/s/ Susan M. Kanaya, as Attorney-in-Fact 03/07/2018
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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 option was granted on December 31, 2012, and was fully vested prior to March 5, 2018.
(2) The option was granted on July 23, 2013, and was fully vested prior to March 5, 2018.
(3) The option was granted on January 2, 2014, and was fully vested prior to March 5, 2018.
(4) The option was granted on February 23, 2015. 25% of the total number of shares of common stock subject to the option vested on January 1, 2016, and 1/48th of the total number of shares of common stock subject to the option vest monthly thereafter, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date.
(5) The option was granted on March 7, 2016. 25% of the total number of shares of common stock subject to the option vested on January 1, 2017, and 1/48th of the total number of shares of common stock subject to the option vest monthly thereafter, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date.
(6) The option was granted on February 28, 2017. 25% of the total number of shares of common stock subject to the option vested on January 1, 2018, and 1/48th of the total number of shares of common stock subject to the option vest monthly thereafter, subject to the Reporting Person's continued employment or service relationship with the Issuer on each such vesting date.
 
Remarks:
See Exhibit 24, Power of Attorney.

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