Earl L. Shipp is Director at Great Lakes Dredge & Dock CORP (GLDD). They have made 5 open-market trades across 2 companies since 2018, most recently 2025-12-31.
CIK 0001721123
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 $258K since 2018, never a sale. Across 5 scored buys the stock is up 8.6% at ninety days, and 5.7 points ahead of the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 40% | 40% | 80% |
| Avg Move | -4.6% | -3.1% | +8.6% |
| Alpha | -3.9% | -3.4% | +5.7% |
| Scored | 5 | 5 | 5 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| GLDD | BUY | 2023-03-02 | 2023-03-03 | $5.51 | $11K | -12.7% | -7.6% | +17.8% |
| GLDD | BUY | 2021-08-06 | 2021-08-12 | $14.58 | $22K | +0.3% | +0.2% | +2.0% |
| OLN | BUY | 2019-08-06 | 2019-08-08 | $17.92 | $4K | -7.5% | +3.3% | +3.8% |
| OLN | BUY | 2018-11-12 | 2018-11-14 | $20.70 | $12K | +1.4% | -4.1% | +22.4% |
| OLN | BUY | 2018-02-13 | 2018-02-14 | $32.01 | $208K | -4.4% | -7.3% | -2.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.