WSR Insider Trading
Whitestone REIT | Real Estate Investment Trusts
Comprehensive Trading Performance Summary
The investment history of corporate insiders at Whitestone REIT provides a unique lens into the internal conviction of the company's leadership. By analyzing SEC Form 4 filings, investors can track how directors and officers are allocating their own capital. High-conviction buying often signals that management believes the current market price significantly undervalues future growth prospects, while strategic selling might occur for personal liquidity or portfolio diversification. Monitoring these shifts in ownership is essential for understanding the alignment between management and shareholders in the Real Estate Investment Trusts sector.
Transactions on Chart
Open Full Chart| Filing Date | Trade Date | Reporting Person | Relationship | Type | Price | Qty | Total, $ | Owned After | Change, % |
|---|---|---|---|---|---|---|---|---|---|
| 2025-05-31 00:21 | 2025-05-28 | Miller Donald A | Director | BUY | $12.35 | 5,000 | $61,750 | 21,708 | +29.9% |
| 2025-05-05 23:09 | 2025-05-02 | Miller Donald A | Director | BUY | $12.80 | 15,000 | $192,050 | 16,708 | +878.2% |
| 2025-03-25 23:46 | 2025-03-21 | GATHRIGHT KRISTIAN M | Director | BUY | $14.36 | 1,750 | $25,130 | 3,503 | +99.8% |
| 2025-03-21 15:40 | 2025-03-19 | Feng Amy Shih-Hua | Director | BUY | $14.32 | 875 | $12,528 | 54,225 | +1.6% |
| 2024-09-06 01:20 | 2024-09-04 | Buthman Julia Bruns | Director | BUY | $12.99 | 5,000 | $64,950 | 8,093 | +161.7% |
| 2024-06-12 23:29 | 2024-06-11 | Feng Amy Shih-Hua | Director | BUY | $13.09 | 17,000 | $222,530 | 40,566 | +72.1% |
| 2024-06-04 23:35 | 2024-06-03 | Feng Amy Shih-Hua | Director | BUY | $13.07 | 6,100 | $79,727 | 23,566 | +34.9% |
| 2023-05-08 23:46 | 2023-05-05 | Feng Amy Shih-Hua | Director | BUY | $8.47 | 3,900 | $33,033 | 12,642 | +44.6% |
| 2023-03-07 02:30 | 2023-03-03 | Feng Amy Shih-Hua | Director | BUY | $9.67 | 3,650 | $35,296 | 8,742 | +71.7% |
| 2022-10-04 17:07 | 2022-09-30 | Mastandrea Christine J | Officer - Chief Operating Officer | BUY | $8.56 | 500 | $4,279 | 305,808 | +0.2% |
| 2022-04-02 00:35 | 2021-03-22 | Jones Jeffrey Alan | Director | BUY | $9.55 | 6,250 | $59,688 | 22,402 | +38.7% |
| 2020-12-05 05:15 | 2020-12-04 | MASTANDREA JAMES C | Director, Officer - CHAIRMAN & CEO | BUY | $8.42 | 1,000 | $8,420 | 1,372,932 | +0.1% |
| 2020-07-01 23:45 | 2020-06-30 | Mastandrea Christine J | Officer - EVP CORPORATE STRATEGY | BUY | $0.00 | 0 | $0 | 1,221,932 | 0.0% |
| 2020-07-01 23:26 | 2020-06-30 | MASTANDREA JAMES C | Director, Officer - CHAIRMAN & CEO | BUY | $0.00 | 0 | $0 | 1,221,932 | 0.0% |
| 2020-06-25 23:35 | 2020-06-24 | Taylor David F. | Director | BUY | $6.49 | 2,000 | $12,980 | 10,375 | +23.9% |
| 2020-05-19 16:11 | 2020-05-18 | MASTANDREA JAMES C | Director, Officer - CHAIRMAN & CEO | BUY | $5.75 | 18,000 | $103,500 | 1,221,932 | +1.5% |
| 2020-03-12 23:16 | 2020-03-11 | MASTANDREA JAMES C | Director, Officer - CHAIRMAN & CEO | BUY | $11.00 | 5,000 | $55,000 | 230,393 | +2.2% |
| 2020-03-03 00:46 | 2020-02-28 | Jones Jeffrey Alan | Director | BUY | $12.00 | 6,250 | $75,000 | 6,250 | +100.0% |
| 2020-03-03 00:46 | 2020-02-28 | MASTANDREA JAMES C | Director, Officer - CHAIRMAN & CEO | BUY | $12.39 | 10,000 | $123,900 | 230,393 | +4.5% |
| 2019-09-10 23:15 | 2019-09-06 | MASTANDREA JAMES C | Director, Officer - CHAIRMAN & CEO | BUY | $12.64 | 10,000 | $126,400 | 1,027,250 | +1.0% |
| 2018-03-06 02:55 | 2018-03-05 | MASTANDREA JAMES C | Director, Officer - CHAIRMAN & CEO | BUY | $10.65 | 2,500 | $26,625 | 695,873 | +0.4% |
| 2018-03-06 02:54 | 2018-03-05 | Mastandrea Christine J | Officer - VP CORPORATE STRATEGY | BUY | $10.65 | 2,500 | $26,625 | 695,873 | +0.4% |
| 2017-08-30 00:08 | 2017-08-29 | LAMBERT PAUL T | Director | BUY | $12.29 | 3,000 | $36,882 | 53,118 | +6.0% |
| 2017-03-08 17:01 | 2017-03-07 | LAMBERT PAUL T | Director | BUY | $13.88 | 2,500 | $34,690 | 50,118 | +5.3% |
| 2016-08-23 00:00 | 2016-08-19 | MASTANDREA JAMES C | Director, Officer - CHAIRMAN & CEO | BUY | $14.56 | 2,000 | $29,120 | 756,526 | +0.3% |
| 2016-08-23 00:00 | 2016-08-19 | Mastandrea Christine J | Officer - VP CORPORATE STRATEGY | BUY | $14.56 | 2,000 | $29,120 | 756,526 | +0.3% |
| 2016-08-23 00:00 | 2016-08-19 | Holeman David K | Officer - CHIEF FINANCIAL OFFICER | BUY | $14.56 | 660 | $9,607 | 317,034 | +0.2% |
| 2015-11-14 04:16 | 2015-11-12 | LAMBERT PAUL T | Director | BUY | $11.75 | 3,000 | $35,250 | 43,054 | +7.5% |
| 2015-08-25 23:18 | 2015-08-25 | DEE JOHN J | Officer - COO & SECRETARY | BUY | $10.84 | 1,000 | $10,839 | 116,466 | +0.9% |
| 2015-08-10 23:12 | 2015-08-07 | MASTANDREA JAMES C | Director, Officer - CHAIRMAN & CEO | BUY | $12.95 | 2,000 | $25,907 | 459,729 | +0.4% |
| 2015-08-10 23:11 | 2015-08-07 | Mastandrea Christine J | Officer - VP CORPORATE STRATEGY | BUY | $12.95 | 2,000 | $25,907 | 459,729 | +0.4% |
| 2015-05-28 23:32 | 2015-05-28 | LAMBERT PAUL T | Director | BUY | $14.08 | 2,200 | $30,976 | 40,054 | +5.8% |
| 2015-05-14 23:35 | 2015-05-12 | MASTANDREA JAMES C | Director, Officer - CHAIRMAN & CEO | BUY | $14.32 | 1,000 | $14,320 | 371,874 | +0.3% |
| 2015-05-14 23:31 | 2015-05-12 | Mastandrea Christine J | Officer - VP Corporate Strategy | BUY | $14.32 | 1,000 | $14,320 | 371,874 | +0.3% |
| 2015-05-14 04:23 | 2015-05-12 | MASTANDREA JAMES C | Director, Officer - CHAIRMAN & CEO | BUY | $14.17 | 1,500 | $21,250 | 370,874 | +0.4% |
| 2015-05-14 04:22 | 2015-05-12 | Holeman David K | Officer - CHIEF FINANCIAL OFFICER | BUY | $14.31 | 312 | $4,465 | 142,640 | +0.2% |
| 2015-05-14 04:20 | 2015-05-12 | Mastandrea Christine J | Officer - VP STRATEGY & MARKET RESEARCH | BUY | $14.17 | 1,500 | $21,250 | 370,874 | +0.4% |
| 2015-05-11 23:31 | 2015-05-07 | LAMBERT PAUL T | Director | BUY | $14.03 | 2,000 | $28,060 | 37,854 | +5.6% |
| 2014-12-11 00:07 | 2014-12-09 | Holeman David K | Officer - CHIEF FINANCIAL OFFICER | BUY | $14.68 | 655 | $9,615 | 68,146 | +1.0% |
| 2014-11-14 02:29 | 2014-11-13 | MASTANDREA JAMES C | Director, Officer - CHAIRMAN & CEO | BUY | $15.09 | 1,000 | $15,090 | 214,596 | +0.5% |
| 2014-11-14 02:27 | 2014-11-13 | Mastandrea Christine J | Officer - VP STRATEGY & MARKET RESEARCH | BUY | $15.09 | 1,000 | $15,090 | 214,596 | +0.5% |
| 2013-12-10 21:55 | 2013-12-09 | MASTANDREA JAMES C | Director, Officer - CHAIRMAN & CEO | BUY | $13.32 | 2,800 | $37,296 | 114,823 | +2.5% |
| 2013-11-12 14:01 | 2013-11-08 | MASTANDREA JAMES C | Director, Officer - Chairman & CEO | BUY | $13.44 | 1,000 | $13,440 | 112,023 | +0.9% |
| 2013-10-09 23:25 | 2013-10-08 | DEE JOHN J | Officer - COO & SECRETARY | BUY | $13.54 | 500 | $6,770 | 54,450 | +0.9% |
| 2013-08-22 23:03 | 2013-08-21 | Holeman David K | Officer - CHIEF FINANCIAL OFFICER | BUY | $14.97 | 923 | $13,817 | 33,923 | +2.8% |
| 2013-08-20 23:02 | 2013-08-16 | MASTANDREA JAMES C | Director, Officer - CHAIRMAN & CEO | BUY | $14.98 | 1,000 | $14,980 | 111,023 | +0.9% |
| 2013-05-09 23:42 | 2013-05-08 | MASTANDREA JAMES C | Director, Officer - CHAIRMAN & CEO | BUY | $16.49 | 6,250 | $103,063 | 110,023 | +6.0% |
| 2012-11-13 22:03 | 2012-11-09 | Rollnick Richard D. | Officer - SEE REMARKS | BUY | $12.71 | 2,000 | $25,420 | 4,345 | +85.3% |
| 2012-08-30 17:42 | 2012-08-28 | DEE JOHN J | Officer - COO & SECRETARY | BUY | $12.80 | 300 | $3,840 | 53,950 | +0.6% |
| 2012-08-30 17:41 | 2012-08-28 | MASTANDREA JAMES C | Director, Officer - CHAIRMAN & CEO | BUY | $12.80 | 1,000 | $12,800 | 103,773 | +1.0% |
How to Interpret $WSR Trades
Not every insider transaction in Whitestone REIT is a signal for immediate action. Professional investors look for "cluster buying"—when multiple executives simultaneously purchase $WSR shares on the open market. It is crucial to distinguish between scheduled sales (under Rule 10b5-1) and voluntary increases in ownership, which demonstrate management’s true conviction that the stock is undervalued.
Data Source & Accuracy for WSR
Insider activity data for Whitestone REIT is streamed in real-time directly from the SEC EDGAR system. We analyze raw Form 4 filings, filtering out technical adjustments and complex derivative transactions. This provides a transparent view of how ownership structure is evolving in $WSR, allowing you to follow the capital of those with the most intimate knowledge of the company.
UNDERSTANDING THE DATA
FILING DATE: The date and time when the transaction was reported to the SEC. This is when the public first receives the information.
TRADE DATE: The actual day the insider executed the purchase or sale in the market.
INDUSTRY: The specific market sector the company operates in. Useful for identifying broader institutional capital flows across sectors.
OWNED AFTER: The total number of shares held by the insider following the transaction. This highlights the insider's remaining conviction in the company.
CHANGE %: The percentage increase or decrease of the insider's total position. Large percentage changes often carry more weight than the dollar amount alone.
TRADE TYPES DEFINITIONS
BUY: An open market purchase. Typically indicates an insider's belief that the stock is undervalued or poised for growth.
SELL: An open market sale. While often used for diversification or liquidity, large or unexpected sales can be a warning signal.
OPT+S (OPTION EXERCISE & SALE): This occurs when an insider exercises their stock options and sells them immediately. Often part of a structured compensation plan.