Joseph A. Chlapaty is 10% Owner at ADVANCED DRAINAGE SYSTEMS, INC. (WMS). They have made 12 open-market trades across 1 company since 2014, most recently 2026-09-01.
CIK 0001604028
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.
8 open-market purchases totalling $6.3M since 2014, against 4 sales. Across 8 scored buys the stock is down 6.1% at ninety days, and 8.5 points behind the S&P over the same stretch.
8 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| WMS | 10,039 | $1.3M |
Shares reported on the most recent Form 4, priced at the 2026-09-03 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 63% | 50% | 13% |
| Avg Move | -2.3% | +1.4% | -6.1% |
| Alpha | -0.9% | -0.4% | -8.5% |
| Scored | 8 | 8 | 8 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| WMS | SELL | 2019-11-12 | 2019-11-14 | $37.40 | $37.4M | +0.5% | +1.6% | +25.2% |
| WMS | SELL | 2018-08-28 | 2018-08-29 | $30.08 | $45.1M | -2.5% | -5.4% | -19.0% |
| WMS | SELL | 2018-06-11 | 2018-06-13 | $28.82 | $25.9M | -1.9% | -0.9% | +9.5% |
| WMS | SELL | 2018-06-04 | 2018-06-06 | $28.54 | $2.9M | -1.4% | +0.0% | +7.5% |
| WMS | BUY | 2017-06-15 | 2017-06-16 | $20.28 | $203K | +2.0% | -2.0% | +1.7% |
| WMS | BUY | 2017-06-07 | 2017-06-07 | $19.39 | $582K | +3.8% | -1.8% | -0.3% |
| WMS | BUY | 2016-06-13 | 2016-06-15 | $25.98 | $909K | -5.5% | +7.0% | -12.2% |
| WMS | BUY | 2016-06-10 | 2016-06-13 | $26.77 | $1.2M | +3.9% | +4.9% | -10.5% |
| WMS | BUY | 2016-06-09 | 2016-06-13 | $26.84 | $537K | +3.9% | +4.9% | -10.5% |
| WMS | BUY | 2016-06-09 | 2016-06-13 | $26.79 | $1.8M | +3.9% | +4.9% | -10.5% |
| WMS | BUY | 2015-02-09 | 2015-02-10 | $24.67 | $543K | -15.0% | -3.3% | -3.3% |
| WMS | BUY | 2014-12-10 | 2014-12-12 | $21.87 | $590K | -15.0% | -3.3% | -3.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.