| Insider | Role | Shares | Value | Buys | Sells |
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| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
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| Insider | Role | Shares | Value | Buys | Sells |
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| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
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See Remarks
1 company
Tim A Makowski is See Remarks at WMS. Tim A Makowski's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $914K at current prices.
Our model assigns Tim A Makowski a middling insider score of 56/100, based on 9 past trades. Over a 12-month horizon, 50.0% of those trades were profitable, with an average 12-month return of -2.6%.
The WMS filings lean toward selling, a net 55,899 shares.
Tim A Makowski has 41 Form 4 filings on record from February 2017 to May 2026, all as Advanced Drainage Systems (WMS), 2017–2026.
The 88 reported transactions were 34 tax withholdings, 17 stock awards, 17 open-market sales and 11 option or other derivative awards, plus smaller numbers of other types.
Counted by filing, the open-market trades come to no purchases and 14 sales worth about $6.7M.
The largest open-market sale was 8,271 shares of WMS at an average $161.69 on February 14, 2024, about $1.3M. Twelve months later WMS was down 22%.
None of the 6 sales since April 2023 was marked as made under a Rule 10b5-1 trading plan.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Nov 12, 2025 | WMS Advanced Drainage Systems, Inc. | See Remarks | Sell | 4,901 | $149.21 | $731,276.33 | -66.5% | +16.1% | - | |
| May 31, 2024 | WMS Advanced Drainage Systems, Inc. | See Remarks | Sell | 3,800 | $170.68 | $648,601.10 | -45.6% | -10.0% | -36.6% | |
| Feb 14, 2024 | WMS Advanced Drainage Systems, Inc. | See Remarks | Sale+OE | 8,271 | $161.69 | $1,337,310.70 | -57.0% | +6.6% | -22.4% | |
| Dec 6, 2023 | WMS Advanced Drainage Systems, Inc. | See Remarks | Sale+OE | 2,000 | $125.72 | $251,445.80 | -24.5% | +31.0% | +4.2% | |
| Sep 12, 2023 | WMS Advanced Drainage Systems, Inc. | See Remarks | Sell | 2,500 | $122.35 | $305,870.75 | -28.9% | +4.5% | +17.9% | |
| Jun 13, 2023 | WMS Advanced Drainage Systems, Inc. | See Remarks | Sell | 3,000 | $109.25 | $327,750.00 | -25.8% | +11.9% | +55.4% | |
| Aug 12, 2022 | WMS Advanced Drainage Systems, Inc. | See Remarks | Sale+OE | 5,796 | $145.84 | $845,285.74 | -43.6% | -39.6% | -13.0% | |
| Aug 8, 2022 | WMS Advanced Drainage Systems, Inc. | See Remarks | Sell | 5,200 | $142.46 | $740,777.56 | -40.9% | -42.6% | -5.8% | |
| Aug 23, 2021 | WMS Advanced Drainage Systems, Inc. | See Remarks | Sell | 2,000 | $116.24 | $232,489.40 | -21.4% | +12.7% | +21.5% | |
| Feb 16, 2021 | WMS Advanced Drainage Systems, Inc. | See Remarks | Sale+OE | 5,000 | $97.58 | $487,894.50 | -49.6% | - | - |