Whitestone REIT (WSR) Insider Trading & SEC Filings
Last SEC filing
Whitestone REIT (WSR) has filed 15 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-15. 2 Form 8-K material event filings were reported by WSR in the last 90 days. InsiderAlpha tracks every WSR SEC filing - Form 4, Form 144, and 8-K - in real time, including Rule 10b5-1 plan detection.
About Whitestone REIT (WSR)
Whitestone REIT trades under the ticker WSR. InsiderAlpha tracks 32 primary SEC Form 4 filings from 10 reporting insiders for WSR since 2024, sourced directly from SEC EDGAR.
| Sector | Real Estate insider trading |
|---|---|
| SIC classification | Real Estate Investment Trusts (SIC 6798) |
| SEC CIK | 0001175535 |
90-Day SEC Filing Activity
| Form 4 filings (90d) | 15 |
|---|---|
| Form 8-K filings (90d) | 2 |
| Latest Form 4 filing | 2026-07-15 |
Recent WSR Insider Transactions (Form 4)
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| John Scott Hogan | Chief Financial Officer | A - Grant or award | 159.5K | $0.00 | - | SEC | |
| Peter Tropoli | General Counsel & Secretary | D - Derivative transaction | 330.6K | $19.00 | $6.28M | SEC | |
| Christine J. Mastandrea | President and COO | A - Grant or award | 246.4K | $0.00 | - | SEC | |
| Soklin Siv | VP of Human Resources | D - Derivative transaction | 168.1K | $19.00 | $3.19M | SEC | |
| David K. Holeman | Chief Executive Officer | A - Grant or award | 345.9K | $0.00 | - | SEC | |
| Peter Tropoli | General Counsel & Secretary | A - Grant or award | 151.1K | $0.00 | - | SEC | |
| Julia Bruns Buthman | Insider | D - Derivative transaction | 31.6K | $19.00 | $600K | SEC | |
| Donald A. Miller | Insider | D - Derivative transaction | 33.7K | $19.00 | $640K | SEC | |
| Christine J. Mastandrea | President and COO | D - Derivative transaction | 718.9K | $19.00 | $13.66M | SEC | |
| Soklin Siv | VP of Human Resources | A - Grant or award | 64.7K | $0.00 | - | SEC | |
| Amy Shih-Hua Feng | Insider | D - Derivative transaction | 69.5K | $19.00 | $1.32M | SEC | |
| Kristian M. Gathright | Insider | D - Derivative transaction | 15.8K | $19.00 | $300K | SEC | |
| Jeffrey Alan Jones | Insider | D - Derivative transaction | 45.7K | $19.00 | $869K | SEC | |
| David K. Holeman | Chief Executive Officer | D - Derivative transaction | 1.16M | $19.00 | $22.12M | SEC | |
| John Scott Hogan | Chief Financial Officer | D - Derivative transaction | 395.0K | $19.00 | $7.51M | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Whitestone REIT (WSR). Updated in real time as new filings are submitted to the SEC.
Most-Active WSR Insiders - Last 90 Days
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| David K. Holeman | 3 | $22.37M |
| Christine J. Mastandrea | 3 | $13.83M |
| Peter Tropoli | 3 | $6.36M |
| John Scott Hogan | 3 | $7.63M |
| Soklin Siv | 3 | $3.24M |
Recent WSR Form 8-K Material Events
- - Item 5.07, 7.01, 9.01 [SEC]
- - Item 8.01 [SEC]
- - Item 1.01, 5.03, 7.01, 8.01, 9.01 · Acquisition · neutral [SEC]
Whitestone REIT entered into a definitive merger agreement to be acquired by affiliates of Ares Real Estate Management Holdings (Ares Management Corporation). The transaction involves a two-step merger structure where Whitestone's operating partnership and company will merge with - - Item 2.02, 9.01 · Earnings · neutral [SEC]
Whitestone REIT announced its financial results for Q4 2025 and full year 2025 on February 25, 2026. The filing contains only the standard earnings announcement with supplemental operating and financial data, with no material operational surprises, strategic changes, or guidance
Recent Insider Filings
- - David K. Holeman (Chief Executive Officer)
- - Julia Bruns Buthman (Insider)
- - Peter Tropoli (General Counsel & Secretary)
- - Christine J. Mastandrea (President and COO)
- - Amy Shih-Hua Feng (Insider)
Form 4 Transaction Code Reference
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in WSR insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
WSR Insider Trading - FAQ
- What is the latest insider trade for WSR?
- Whitestone REIT (WSR) had 15 insider filings in the last 90 days, with the most recent on 2026-07-15. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
- How many insiders are buying WSR stock?
- 0 insider purchases of WSR were filed in the last 90 days.
- How many insiders are selling WSR stock?
- 0 insider sales of WSR were filed in the last 90 days.
- Where can I see WSR SEC filings (Form 4, 10-K, 10-Q, 8-K)?
- This page tracks WSR Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Learn More
- What is SEC Form 4?
- How to read insider buying signals
- Rule 10b5-1 trading plans explained
- The cluster buying signal
Open the live WSR dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.