Donald A. Miller - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Donald A. Miller has filed 1 SEC Form 4 filing across 1 company in the last 90 days - buying. Lifetime open-market purchases: $254K. Historical track record: 1/5 stars across 4 tracked purchases.
Profile
Donald A. Miller is a corporate insider at Whitestone REIT (WSR). Miller has reported 4 insider filings with the SEC since 2024. The most recent filing was in July 2026.
| Role | Insider |
|---|---|
| Notability | 20/100 |
Board memberships
- Whitestone REIT
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| InsiderAlpha rating | ★☆☆☆☆ (1/5) |
|---|---|
| Total purchases tracked | 4 |
| Purchases with forward-return data | 4 |
| 30-day win rate | 25% |
| 90-day win rate | 25% |
| Avg 5-day return | -0.41% |
| Avg 30-day return | -1.22% |
| Avg 90-day return | -1.73% |
| Best 30-day return | +3.13% |
Trading Pattern
InsiderAlpha's records for Donald A. Miller go back to 2024: 4 primary Form 4 filings, an average of 1.3 per year. The typical open-market purchase is $63K (4 buys totaling $254K). The largest single buy on record is $64K of WSR in 2025. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role Donald A. Miller has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Insider at Whitestone REIT (WSR) - 1 filing, 2026
- Director at Whitestone REIT (WSR) - 3 filings, 2024 to 2025
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-15 | WSR | Whitestone REIT | D - Derivative transaction | 33.7K | $19.00 | $640K |
| 2025-05-30 | WSR | Whitestone REIT | P - Open-market purchase | 5.0K | $12.35 | $62K |
| 2025-05-05 | WSR | Whitestone REIT | P - Open-market purchase | 5.0K | $12.70 | $64K |
| 2025-05-05 | WSR | Whitestone REIT | P - Open-market purchase | 5.0K | $12.84 | $64K |
| 2025-05-05 | WSR | Whitestone REIT | P - Open-market purchase | 5.0K | $12.87 | $64K |
| 2024-12-26 | WSR | Whitestone REIT | A - Grant or award | 1.7K | $14.15 | $24K |
Companies - Last 90 Days
- Whitestone REIT (WSR) - 1 filing, last 2026-07-15
Most Active Insiders Right Now
Donald A. Miller has no recent co-filers at the same companies, so here are the insiders with the largest open-market activity across the market in the last 90 days.
- MetLife Investment Management, LLC - $1600000.00B of FINS open-market activity in the last 90 days
- Magnetar Financial LLC - $16357.48B of CRWV open-market activity in the last 90 days
- Marianne Okland - $18.46B of STNG open-market activity in the last 90 days
- VisionWave Holdings, Inc. - $14.13B of SVRE open-market activity in the last 90 days
- Vanessa Allen Sutherland - $7.44B of PSX open-market activity in the last 90 days
- AI Alpine (Luxembourg) S.a.r.l. - $2.69B of INIO open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- DONEGAL MUTUAL INSURANCE CO
- DORCHESTER MINERALS OPERATING LP
- Robert W. Duggan
- John Earl
- EcoR1 Capital, LLC
- ECP ControlCo, LLC
- ECP Fiber Holdings GP, LLC
- Electrum Strategic Resources L.P.
Frequently Asked Questions
Who is Donald A. Miller?
Donald A. Miller is a corporate insider at Whitestone REIT (WSR). Miller has reported 4 insider filings with the SEC since 2024. The most recent filing was in July 2026.…
How many SEC Form 4 filings has Donald A. Miller submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Donald A. Miller been buying or selling stock?
Recorded transactions: 4 open-market purchases ($254K) and 0 open-market sales across all tracked filings.
How accurate is Donald A. Miller's historical track record?
Across 4 tracked purchases, Donald A. Miller averaged -1.2% avg 30-day return with a 25% 30-day win rate. InsiderAlpha rates the track record at 1/5 stars.
Where can I see all of Donald A. Miller's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live Donald A. Miller profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.