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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1463172	Zendesk Inc.	ZEN	Services-Computer Processing & Data Preparation (7374)	000000000

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1615739	Adrian Matthew Price	1019 Market Street San Francisco CA 94103	Svp Of Global Marketing	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2015-03-13	1,916	$9.52	1,916	No	4	M	Direct
Common Stock	Disposition	2015-03-13	1,916	$22.60	0	No	4	S	Direct
Common Stock	Acquisiton	2015-03-15	143	$0.00	143	No	4	M	Direct
Common Stock	Disposition	2015-03-15	78	$22.54	65	No	4	F	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	F	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (Right to Buy)	Disposition	2015-03-13	1,916	$0.00	1,916	$9.52
Common Stock	Restricted Stock Unit	Disposition	2015-03-15	143	$0.00	143	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
90,084		2024-02-13	No	4	M	Direct
6,757		2022-02-04	No	4	M	Direct

Footnotes

This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.
Restricted stock units convert into common stock on a one-for-one basis.
Represents the number of shares withheld by the Issuer in satisfaction of tax withholding obligations in connection with the vesting of the restricted stock units listed in Table II. Such withholding is mandated by an election of the Issuer made in advance and does not represent a discretionary trade by the reporting person.
The option is immediately exercisable as of the grant date. 1/60th of the shares vest monthly after the vesting commencement date of February 13, 2014, subject to the Reporting Person's continuous service to the Issuer on each such date. 50% of the then unvested shares are subject to acceleration upon the occurrence of certain events. Unvested shares exercised are subject to a right of repurchase in favor of the Issuer should the Reporting Person cease to provide continuous service.
1/48th of the shares issuable pursuant to the restricted stock unit shall vest monthly after the vesting commencement date of February 15, 2015, subject to the Reporting Person's continuous service to the Issuer on each such date. 50% of the then unvested shares are subject to acceleration upon the occurrence of certain events.
The price in column 8 of Table II is $0.