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 *
  von Emster Kurt
 2. Date of Event Requiring Statement (Month/Day/Year)
10/11/2013		 3. Issuer Name and Ticker or Trading Symbol
CymaBay Therapeutics, Inc. [NONE]
(Last)
(First)
(Middle)
C/O CYMABAY THERAPEUTICS, INC., 3876 BAY CENTER PLACE		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

HAYWARD, CA 94545		 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 17,326
I
By The Konrad Hans von Emster III and Elizabeth F. von Emster Revocable Trust dated January 18, 2005

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
Warrants (right to buy) 09/30/2013 09/30/2018 Common Stock 2,000 $ 5.75 I By The Konrad Hans von Emster III and Elizabeth F. von Emster Revocable Trust dated January 18, 2005
Stock Option (right to buy)   (1) 06/04/2019 Common Stock 943 $ 9.54 D  
Stock Option (right to buy)   (2) 01/25/2022 Common stock 943 $ 4.77 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
von Emster Kurt
C/O CYMABAY THERAPEUTICS, INC.
3876 BAY CENTER PLACE
HAYWARD, CA 94545		   X      

Signatures

/s/ Brett White, by power of attorney 10/11/2013
**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 became exercisable with respect to 25% of the underlying shares on the first anniversary of the vesting commencement date of April 2, 2009 and with respect to the remaining 75% of the underlying shares in equal monthly installments over the next three-year period.
(2) The option vests in equal monthly installments over the four-year period, beginning on January 25, 2012.

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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