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
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Titterton Jeffrey 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)
Chief Marketing Officer
(Last)          (First)          (Middle)

1019 MARKET STREET
3. Date of Earliest Transaction (MM/DD/YYYY)

6/1/2020
(Street)

SAN FRANCISCO, CA 94103
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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 6/1/2020  M  10000 A$27.34 19059 D  
Common Stock 6/1/2020  S  10000 D$87.5016 (1)9059 D  

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security3. Trans. Date3A. Deemed Execution Date, if any4. Trans. Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
6. Date Exercisable and Expiration Date7. Title and Amount of Securities Underlying Derivative Security
(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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy) $27.34 6/1/2020  M     10000   (2)5/16/2027 Common Stock 10000.0 $0 25500 D  

Explanation of Responses:
(1) This sale price represents the weighted average sale price of the shares sold ranging from $87.50 to $87.5650 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.
(2) 1/4th of the shares issuable pursuant to the option shall vest one year after the vesting commencement date of May 15, 2017 and an additional 1/48th of the shares issuable pursuant to the option shall vest each month thereafter, subject to the Reporting Person's continuous service to the Issuer on each such date. Unvested shares are subject to acceleration upon the occurrence of certain events.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Titterton Jeffrey J
1019 MARKET STREET
SAN FRANCISCO, CA 94103


Chief Marketing Officer

Signatures
/s/ Hasani Caraway via Power-of-Attorney for Jeff J. Titterton6/2/2020
**Signature of Reporting PersonDate

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