Karen M. Anderson - Jul 1, 2021 Form 4 Insider Report for Mimecast Ltd (MIME)

Role: Chief Human Resources Officer
Signature: /s/ Robert P. Nault, Attorney-in-Fact
Stock symbol: MIME
Transactions as of: Jul 1, 2021
Transactions value $: $0
Form type: 4
Date filed: 7/6/2021, 05:30 PM
Previous filing: Jun 16, 2021
Next filing: Aug 12, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MIME	Restricted Share Units	Award	$0	+9.4K		$0.00	9.4K	Jul 1, 2021	Direct	F1, F2
holding	MIME	Restricted Share Units						12.5K	Jul 1, 2021	Direct	F1, F3
holding	MIME	Restricted Share Units						9.55K	Jul 1, 2021	Direct	F1, F4
holding	MIME	Restricted Share Units						12.2K	Jul 1, 2021	Direct	F1, F5

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

Explanation of Responses:

Id	Content
F1	Each restricted share unit represents a contingent right to receive one share of the Issuer's Ordinary Shares.
F2	These restricted share units were granted on July 1, 2021. Twenty-five percent (25%) of the units vest on July 1, 2022 and the remainder of the units vest on an annual basis over the next three (3) years, provided that the Reporting Person remains an employee of the Issuer on each such vesting date.
F3	These restricted share units were granted on February 1, 2019. Twenty-five percent (25%) of the units vested on February 1, 2020, twenty-five percent (25%) of the units vested on February 1, 2021, and the remainder of the units vest on an annual basis over the next two (2) years, provided that the Reporting Person remains an employee of the Issuer on such vesting date.
F4	These restricted share units were granted on April 1, 2020. Twenty-five percent (25%) of the units vested on April 1, 2021, and the remainder of the units vest on an annual basis over the next three (3) years, provided that the Reporting Person remains an employee of the Issuer on each such vesting date.
F5	These restricted share units were granted on April 1, 2021. Twenty-five percent (25%) of the units vest on April 1, 2022 and the remainder of the units vest on an annual basis over the next three (3) years, provided that the Reporting Person remains an employee of the Issuer on each such vesting date.

Remarks:

Exhibit 24 Power of Attorney (incorporated by reference to Power of Attorney filed as Exhibit 24 to Form 3 filed by the Reporting Person on January 3, 2019).