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 * BLACK ALAN J   2. Issuer Name and Ticker or Trading Symbol Zendesk, Inc. [ZEN] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) SVP and CFO (Last) (First) (Middle) 1019 MARKET STREET 3. Date of Earliest Transaction (Month/Day/Year) 01/12/2015 (Street) SAN FRANCISCO, CA 94103 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 01/09/2015   G V 12,500 D $ 0 292,361 D   Common Stock 01/09/2015   G V 12,500 A $ 0 238,716 I Alan J. Black and Linda J. Black, Trustees of Black Family Trust - 2001 U/I DTD. November 26, 2001 Common Stock 01/12/2015   S(1)   7,400 D $ 24.7226 (2) 231,316 I Alan J. Black and Linda J. Black, Trustees of Black Family Trust - 2001 U/I DTD. November 26, 2001 Common Stock 01/12/2015   S(1)   3,000 D $ 24.7822 (3) 63,000 I By Black 2013 Family Heritage Trust Common Stock 01/12/2015   S(1)   3,000 D $ 24.7838 (3) 63,000 I By Black 2014 Family Heritage Trust Common Stock 01/13/2015   S(1)   4,600 D $ 25.1662 (4) 226,716 I Alan J. Black and Linda J. Black, Trustees of Black Family Trust - 2001 U/I DTD. November 26, 2001 Common Stock 01/13/2015   S(1)   1,000 D $ 25.056 (5) 62,000 I By Black 2013 Family Heritage Trust Common Stock 01/13/2015   S(1)   1,000 D $ 25.057 (5) 62,000 I By Black 2014 Family Heritage Trust

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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
BLACK ALAN J 1019 MARKET STREET SAN FRANCISCO, CA 94103			SVP and CFO

Signatures

/s/ John Geschke, Attorney-in-Fact for Alan J. Black		01/14/2015
**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)	This sale was effected pursuant to Rule 10b5-1 trading plans adopted by the Reporting Person.
(2)	This sale price represents the weighted average sale price of the shares sold ranging from $24.28 to $25.195 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.
(3)	This sale price represents the weighted average sale price of the shares sold ranging from $24.30 to $25.195 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.
(4)	This sale price represents the weighted average sale price of the shares sold ranging from $25.00 to $25.25 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.
(5)	This sale price represents the weighted average sale price of the shares sold ranging from $25.00 to $25.10 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price.

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.