Tim A. Makowski

Companies

• Advanced Drainage SystemsOfficer Apr 14, 2016 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• Advanced Drainage Systems WMS24,279 shares²$3.1M at $127.98May 28, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• May 26, 2026Granted 847 shares of Advanced Drainage Systems²
• May 22, 2026Shares withheld for tax 129 shares at $133.00 of Advanced Drainage Systems³
• May 20, 2026Granted 3,729 shares of Advanced Drainage Systems⁴
• May 20, 2026Shares withheld for tax 88 shares at $136.83 of Advanced Drainage Systems⁴
• May 19, 2026Shares withheld for tax 104 shares at $131.59 of Advanced Drainage Systems⁴
• Nov 12, 2025Sold 101 shares at $149.19 of Advanced Drainage Systems⁵
• Nov 12, 2025Sold 4,800 shares at $149.21 of Advanced Drainage Systems⁵
• May 22, 2025Shares withheld for tax 133 shares at $111.00 of Advanced Drainage Systems⁶
• May 20, 2025Shares withheld for tax 85 shares at $118.39 of Advanced Drainage Systems⁷
• May 19, 2025Shares withheld for tax 105 shares at $121.86 of Advanced Drainage Systems⁷
• May 19, 2025Granted 1,016 shares of Advanced Drainage Systems⁷
• May 14, 2025Shares withheld for tax 14 shares at $121.68 of Advanced Drainage Systems⁸
• May 14, 2025Shares withheld for tax 921 shares at $121.68 of Advanced Drainage Systems⁸
• May 14, 2025Granted 3,080 shares of Advanced Drainage Systems⁸
• May 31, 2024Sold 3,800 shares at $170.68 of Advanced Drainage Systems⁹
• May 22, 2024Shares withheld for tax 198 shares at $177.06 of Advanced Drainage Systems¹⁰
• May 20, 2024Granted 839 shares of Advanced Drainage Systems¹¹
• May 19, 2024Shares withheld for tax 119 shares at $174.13 of Advanced Drainage Systems¹¹
• May 18, 2024Shares withheld for tax 157 shares at $174.13 of Advanced Drainage Systems¹¹
• May 15, 2024Shares withheld for tax 20 shares at $176.18 of Advanced Drainage Systems¹²
• May 15, 2024Shares withheld for tax 1,408 shares at $176.18 of Advanced Drainage Systems¹²
• May 15, 2024Granted 3,145 shares of Advanced Drainage Systems¹²
• Feb 14, 2024Sold 8,271 shares at $161.69 of Advanced Drainage Systems¹³
• Feb 14, 2024Exercised options 5,469 shares at $27.44 of Advanced Drainage Systems¹³
• Feb 14, 2024Exercised options 2,802 shares at $25.75 of Advanced Drainage Systems¹³