Mark Raymond Gerke is CFO & VP at Waterstone Financial, Inc. (WSBF). They have made 6 open-market trades across 1 company since 2016, most recently 2026-05-21.
CIK 0001601016
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.
0 open-market purchases, against 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| WSBF | 30,034 | $614K |
Shares reported on the most recent Form 4, priced at the 2026-05-22 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| WSBF | SELL | 2026-05-21 | 2026-05-22 | $18.34 | $183K | +1.0% | +3.9% | +14.1% |
| WSBF | SELL | 2025-02-28 | 2025-03-03 | $14.15 | $39K | -2.0% | -3.7% | -7.1% |
| WSBF | SELL | 2021-03-03 | 2021-03-05 | $20.62 | $157K | -0.4% | -0.2% | -2.8% |
| WSBF | SELL | 2021-03-03 | 2021-03-05 | $20.71 | $19K | -0.4% | -0.2% | -2.8% |
| WSBF | SELL | 2018-05-09 | 2018-05-10 | $17.58 | $62K | -2.0% | +1.7% | -3.7% |
| WSBF | SELL | 2016-03-07 | 2016-03-09 | $14.04 | $28K | -2.5% | -1.2% | +3.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.