JAMES C. MASTANDREA - 31 Jul 2021 Form 4 Insider Report for Whitestone REIT (WSR)

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WSR	Common Shares	Tax liability	$13,470	-1,522	-0.52%	$8.85	293,572	31 Jul 2021	By Spouse	F2, F3, F4
holding	WSR	Common Shares						1,526,512	31 Jul 2021	Direct
holding	WSR	Common Shares						126,431	31 Jul 2021	By L.P.	F1

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

Id	Content
F1	Represents common shares held by Midwest Development Venture IV, an Illinois limited partnership ("Midwest"). Mr. Mastandrea owns both a limited partner interest in Midwest and 100% of the equity of the general partner of Midwest. As a result, Mr. Mastandrea may be deemed to be the beneficial owner of the common shares held by Midwest. Mr. Mastandrea disclaims beneficial ownership in the common shares held by Midwest except to the extent of his pecuniary interest therein and the inclusion of these common shares in this report shall not be deemed an admission of beneficial ownership of all of the reported common shares for purposes of Section 16 or for any other purpose.
F2	Represents common shares withheld by the Company to satisfy tax withholding obligations in connection with the vesting of certain restricted units previously granted pursuant to the Company's 2018 Long-Term Equity Incentive Ownership Plan.
F3	Per Share value assigned by the Company to the tax withholding shares based on the closing sales price of the common shares on July 30, 2021.
F4	The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.