Sara Grootwassink Lewis is Director at PS BUSINESS PARKS INC/CA (PSB). They have made 14 open-market trades across 5 companies since 2011, most recently 2026-06-01.
10 open-market purchases totalling $1.3M since 2011, against 4 sales. Across 10 scored buys the stock is up 3.5% at ninety days, and 3.0 points behind the S&P over the same stretch.
10 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 40% | 50% | 40% |
| Avg Move | -1.3% | +0.8% | +3.5% |
| Alpha | -1.6% | -1.2% | -3.0% |
| Scored | 10 | 10 | 10 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| WY | BUY | 2025-12-17 | 2025-12-18 | $23.61 | $106K | -0.3% | +13.5% | -1.3% |
| WY | BUY | 2025-08-11 | 2025-08-13 | $25.29 | $101K | +1.8% | -4.4% | -12.7% |
| DOC | BUY | 2025-04-28 | 2025-04-28 | $17.66 | $106K | -2.5% | -2.4% | -3.2% |
| DOC | BUY | 2024-03-04 | 2024-03-04 | $16.71 | $301K | +0.9% | +9.7% | +18.0% |
| FCX | BUY | 2023-05-12 | 2023-05-15 | $34.90 | $140K | -6.5% | +11.4% | +14.6% |
| PEAK | BUY | 2023-03-15 | 2023-03-16 | $21.43 | $86K | -2.7% | +0.1% | -3.6% |
| FCX | BUY | 2022-08-03 | 2022-08-04 | $28.79 | $86K | +9.7% | -1.7% | +8.4% |
| WY | BUY | 2020-03-17 | 2020-03-18 | $17.96 | $90K | +4.1% | +23.5% | +41.5% |
| PEAK | BUY | 2020-02-28 | 2020-03-03 | $32.13 | $193K | -14.9% | -39.8% | -24.8% |
| PSB | SELL | 2018-06-15 | 2018-06-18 | $124.45 | $1.8M | +1.7% | +1.8% | +3.8% |
| PSB | SELL | 2017-09-12 | 2017-09-14 | $134.03 | $1.4M | -0.8% | +0.5% | -5.2% |
| PSB | SELL | 2016-11-07 | 2016-11-08 | $106.93 | $885K | +3.2% | +8.3% | +6.2% |
| PSB | SELL | 2014-09-15 | 2014-09-16 | $76.84 | $307K | -2.7% | -1.5% | -1.5% |
| PSB | BUY | 2011-03-31 | 2011-03-31 | $57.71 | $58K | -2.7% | -1.5% | -1.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.