Lasse Petterson is CEO & President at Great Lakes Dredge & Dock CORP (GLDD). They have made 7 open-market trades across 2 companies since 2012, most recently 2026-04-01.
CIK 0001455941
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 $2.4M since 2017, against 2 sales. Across 5 scored buys the stock is up 8.0% at ninety days, and 8.0 points ahead of the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 80% | 80% | 60% |
| Avg Move | +1.2% | +10.2% | +8.0% |
| Alpha | +0.2% | +10.2% | +8.0% |
| Scored | 5 | 5 | 5 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| GLDD | SELL · 10b5-1 | 2024-08-23 | 2024-08-26 | $9.14 | $1.4M | -9.4% | +5.6% | +25.7% |
| GLDD | SELL · 10b5-1 | 2024-08-19 | 2024-08-21 | $9.07 | $1.2M | +7.4% | +18.6% | +39.7% |
| GLDD | SELL · 10b5-1 | 2024-08-15 | 2024-08-19 | $9.09 | $2.0M | +8.5% | +8.3% | +33.4% |
| GLDD | BUY | 2022-08-05 | 2022-08-05 | $9.65 | $97K | +3.7% | -5.1% | -29.3% |
| GLDD | SELL | 2020-06-08 | 2020-06-10 | $10.76 | $455K | -5.6% | -13.2% | -6.8% |
| GLDD | BUY | 2018-08-14 | 2018-08-15 | $5.30 | $513K | +4.7% | +9.3% | +31.2% |
| GLDD | BUY | 2017-08-14 | 2017-08-16 | $3.91 | $219K | +1.3% | +26.3% | +15.8% |
| GLDD | BUY | 2017-08-09 | 2017-08-11 | $3.74 | $1.2M | -5.2% | +7.8% | +22.1% |
| GLDD | BUY | 2017-03-10 | 2017-03-21 | $4.30 | $430K | +1.3% | +12.7% | +0.0% |
| CBI | SELL | 2013-12-11 | 2013-12-12 | $77.85 | $1.8M | -7.1% | +2.8% | +2.8% |
| CBI | SELL · 10b5-1 | 2013-09-12 | 2013-09-13 | $64.50 | $1.6M | -7.1% | +2.8% | +2.8% |
| CBI | SELL · 10b5-1 | 2013-03-08 | 2013-03-11 | $56.39 | $3.7M | -7.1% | +2.8% | +2.8% |
| CBI | SELL · 10b5-1 | 2012-03-13 | 2012-03-15 | $46.00 | $233K | -7.1% | +2.8% | +2.8% |
| CBI | SELL · 10b5-1 | 2012-03-09 | 2012-03-13 | $46.01 | $2.3M | -7.1% | +2.8% | +2.8% |
| CBI | SELL · 10b5-1 | 2012-01-18 | 2012-02-14 | $42.00 | $1.7M | -7.1% | +2.8% | +2.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.