Michael John Curtis - May 15, 2022 Form 4 Insider Report for Zendesk, Inc. (ZEN)

Role: Interim Chief Engineering Off., Director
Signature: /s/ Albert Yeh via Power-of-Attorney for Michael John Curtis
Stock symbol: ZEN
Transactions as of: May 15, 2022
Transactions value $: -$65,682
Form type: 4
Date filed: 5/17/2022, 07:37 PM
Previous filing: Apr 19, 2022
Next filing: May 20, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ZEN	Common Stock	Options Exercise		+1.86K	+17.53%		12.5K	May 15, 2022	Direct	F1
transaction	ZEN	Common Stock	Tax liability	-$65.7K	-643	-5.16%	$102.15	11.8K	May 15, 2022	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ZEN	Restricted Stock Unit	Options Exercise	$0	-1.86K	-11.11%	$0.00	14.9K	May 15, 2022	Common Stock	1.86K		Direct	F1, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Restricted stock units convert into common stock on a one-for-one basis.
F2	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.
F3	1/12th of the shares issuable pursuant to the restricted stock units shall vest each month after the vesting commencement date of January 15, 2022, 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.