Donald A. Miller is Director at Piedmont Office Realty Trust, Inc. (PDM). They have made 5 open-market trades across 2 companies since 2010, most recently 2025-12-24.
CIK 0001332249
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
5 open-market purchases totalling $789K since 2010, never a sale. Across 5 scored buys the stock is up 0.1% at ninety days, and 4.8 points behind the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 40% | 20% | 20% |
| Avg Move | -2.0% | -0.5% | +0.1% |
| Alpha | -0.2% | -3.0% | -4.8% |
| Scored | 5 | 5 | 5 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| WSR | BUY | 2025-05-28 | 2025-05-30 | $12.35 | $62K | +1.3% | +1.6% | +5.5% |
| WSR | BUY | 2025-05-02 | 2025-05-05 | $12.82 | $256K | +0.2% | -3.5% | -4.4% |
| PDM | BUY | 2015-09-01 | 2015-09-02 | $16.72 | $125K | -3.9% | -0.2% | -0.2% |
| PDM | BUY | 2012-05-15 | 2012-05-17 | $17.00 | $128K | -3.9% | -0.2% | -0.2% |
| PDM | BUY | 2010-02-16 | 2010-02-18 | $14.50 | $218K | -3.9% | -0.2% | -0.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.