Christine J. Mastandrea - 02 Jan 2026 Form 4 Insider Report for Whitestone REIT (WSR)

Role: President and COO
Signature: /s/ David K. Holeman Attorney-in Fact for Christine J. Mastandrea
Issuer symbol: WSR
Transactions as of: 02 Jan 2026
Net transactions value: $0
Form type: 4
Filing time: 06 Jan 2026, 16:47:28 UTC
Previous filing: 02 Jul 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Mastandrea Christine J	President and COO	2600 SOUTH GESSNER, SUITE 500, HOUSTON	/s/ David K. Holeman Attorney-in Fact for Christine J. Mastandrea	06 Jan 2026	0001603592

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WSR	Common Shares	Award	$0	+51,998	+13%	$0.000000	462,929	02 Jan 2026	Direct	F1

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

Explanation of Responses:

Id	Content
F1	Represents restricted common shares issued upon vesting of performance based restricted stock units granted in 2023 under the Company's 2018 Long-Term Equity Incentive Ownership Plan, which vested at 200% of target based on the Company's #1 peer group ranking for total shareholder return for the performance period from January 1, 2023 through December 31, 2025.