WMS insider buying – Advanced Drainage Systems, Inc.
11 insider purchases since 2016 worth $190.9M by 6 different insiders. Last 12 months: 0 purchases, $0. Most recent filing: 2022-11-09.
Large company Public float $10.7B (latest 10-K, SEC).
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits. 10 older purchases (before the 5-year window) are listed in the table below.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| JONES ROSS M Director | $111.9M 3× · 3,729,873 sh | 2018-08-28 2019-10-01 | 8× · $612.7M last 2023-08-23 | 70,749 shares as of 2024-03-01 | Sold part |
| Stockbridge Fund, L.P. 10% Owner | $70.0M 1× · 3,446,293 sh | 2017-08-03 2017-08-03 | 1× · $12.7M last 2020-11-16 | 7,799,300 shares as of 2021-09-16 | Sold part |
| CHLAPATY JOSEPH A CEO | $3.4M 4× · 140,500 sh | 2016-06-09 2017-06-15 | 4× · $111.3M last 2019-11-12 | 6,530,081 shares as of 2019-11-14 | Sold part |
| Berkshire Partners LLC 10% Owner | $3.1M 1× · 97,010 sh | 2019-10-03 2019-10-03 | – | 12,696,444 shares as of 2019-10-07 | Holds - never sold |
| MOORE ROY E. JR. CEO | $2.0M 1× · 67,000 sh | 2019-09-10 2019-09-10 | – | 133,967 shares as of 2023-05-23 | Holds - never sold |
| PEREZ DE LA MESA MANUEL J Director | $409,500 1× · 5,000 sh | 2022-11-07 2022-11-07 | – | 25,070 shares as of 2026-07-20 | Holds - never sold |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2025 | 0 | – | – | 7 | $15.7M |
| 2024 | 0 | – | – | 11 | $161.3M |
| 2023 | 0 | – | – | 18 | $101.2M |
| 2022 | 1 | $409,500 | 1 | 15 | $177.2M |
| 2021 | 0 | – | – | 20 | $521.4M |
| 2020 | 0 | – | – | 15 | $171.7M |
| 2019 | 4 | $71.9M | 3 | 9 | $40.6M |
| 2018 | 1 | $45.1M | 1 | 11 | $79.8M |
| 2017 | 3 | $70.8M | 2 | 7 | $85.5M |
| 2016 | 2 | $2.7M | 1 | – | – |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2022-11-09 | PEREZ DE LA MESA MANUEL J | Director | 5,000 | $81.90 | $409,500 | +37.1% | SEC |
| 2019-10-07 | Berkshire Partners LLC | 10% Owner | 97,010 | $31.61 | $3.1M | +0.8% | SEC |
| 2019-10-03 | JONES ROSS M | Director | 229,873 | $31.85 | $7.3M | +1.9% | SEC |
| 2019-09-12 | MOORE ROY E. JR. | CEO | 67,000 | $29.75 | $2.0M | +593.6% | SEC |
| 2019-09-12 | JONES ROSS M | Director | 2,000,000 | $29.75 | $59.5M | +19.5% | SEC |
| 2018-08-29 | JONES ROSS M | Director | 1,500,000 | $30.08 | $45.1M | +17.0% | SEC |
| 2017-08-07 | Stockbridge Fund, L.P. | 10% Owner | 3,446,293 | $20.32 | $70.0M | +63.8% | SEC |
| 2017-06-16 | CHLAPATY JOSEPH A | CEO | 10,000 | $20.28 | $202,800 | +0.1% | SEC |
| 2017-06-07 | CHLAPATY JOSEPH A | CEO | 30,000 | $19.39 | $581,700 | +0.3% | SEC |
| 2016-06-15 | CHLAPATY JOSEPH A | CEO | 35,000 | $25.98 | $909,300 | +0.4% | SEC |
| 2016-06-13 | CHLAPATY JOSEPH A | CEO | 65,500 | $26.79 | $1.8M | +0.7% | SEC |
Insider sales
| Filed | Insider | Role | Shares | Avg price | Value | Type | Filing |
|---|---|---|---|---|---|---|---|
| 2025-12-05 | EVERSOLE ROBERT M | Director | 10,569 | $152.82 | $1.6M | Sale | SEC |
| 2025-12-01 | WAUN THOMAS J. SR. | Officer | 1,500 | $155.00 | $232,500 | Sale | SEC |
| 2025-11-13 | MAKOWSKI TIM A | Officer | 4,901 | $149.21 | $731,276 | Sale | SEC |
| 2025-11-13 | BARBOUR D. SCOTT | Officer | 80,030 | $148.95 | $11.9M | Sale | SEC |
| 2025-11-13 | WAUN THOMAS J. SR. | Officer | 2,272 | $149.05 | $338,694 | Sale | SEC |
| 2025-06-11 | HARVEY DARIN S. | Officer | 4,464 | $116.39 | $519,565 | Sale | SEC |
| 2025-02-21 | HARVEY DARIN S. | Officer | 2,464 | $125.00 | $308,000 | Sale | SEC |
| 2024-06-03 | MAKOWSKI TIM A | Officer | 3,800 | $170.68 | $648,584 | Sale | SEC |
| 2024-06-03 | HUEBERT MICHAEL G. | CEO | 10,000 | $172.58 | $1.7M | Sale | SEC |
| 2024-06-03 | Cottrill Scott A | CFO | 73,207 | $173.11 | $12.7M | Sale | SEC |
| 2024-05-29 | KLEIN ROBERT M | Officer | 3,059 | $175.95 | $538,231 | Sale | SEC |
| 2024-05-29 | BARBOUR D. SCOTT | Officer | 85,938 | $174.10 | $15.0M | Sale | SEC |
| 2024-05-23 | HARVEY DARIN S. | Officer | 9,517 | $177.86 | $1.7M | Sale | SEC |
| 2024-03-08 | HUEBERT MICHAEL G. | CEO | 10,000 | $163.52 | $1.6M | Sale | SEC |
| 2024-03-01 | Seetharam Anil | Director | 762,895 | $163.00 | $124.4M | Sale | SEC |
Showing the latest 15 of 113 sales of $50,000+ since 2016.
Recent company events (SEC 8-K)
- 2026-11-05 - Quarterly results released (SEC)
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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