D. Scott Barbour

Companies

• Allison TransmissionBoard member May 6, 2022 to now¹
• Advanced Drainage SystemsOfficer May 29, 2018 to now²
• Advanced Drainage SystemsBoard member Sep 6, 2017 to now³
• Advanced Drainage SystemsChief executive officer Sep 6, 2017 to Sep 14, 2022³
• Advanced Drainage SystemsPresident Sep 6, 2017 to Sep 14, 2022³

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 WMS94,380 shares⁴$12.1M at $127.98Aug 24, 2026
• Allison Transmission ALSN13,281 shares⁵$1.5M at $110.83May 6, 2026

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

Recent filings

• Aug 20, 2026Gift 2,000 shares of Advanced Drainage Systems⁴
• Jun 12, 2026Other 511 shares at $135.72 of Advanced Drainage Systems⁶
• Jun 12, 2026Other 511 shares at $135.72 of Advanced Drainage Systems⁶
• May 26, 2026Granted 9,036 shares of Advanced Drainage Systems⁷
• May 22, 2026Shares withheld for tax 1,898 shares at $133.00 of Advanced Drainage Systems⁸
• May 20, 2026Granted 29,327 shares of Advanced Drainage Systems⁹
• May 20, 2026Shares withheld for tax 1,130 shares at $136.83 of Advanced Drainage Systems⁹
• May 19, 2026Shares withheld for tax 934 shares at $131.59 of Advanced Drainage Systems⁹
• May 6, 2026Exercised options 1,586 shares of Allison Transmission⁵
• May 6, 2026Granted 92 shares of Allison Transmission⁵
• Mar 13, 2026Gift 7,150 shares of Advanced Drainage Systems¹⁰
• Mar 13, 2026Gift 7,150 shares of Advanced Drainage Systems¹⁰
• Mar 4, 2026Gift 511 shares of Advanced Drainage Systems¹¹
• Mar 4, 2026Gift 511 shares of Advanced Drainage Systems¹¹
• Feb 6, 2026Granted 102 shares of Allison Transmission¹²
• Nov 25, 2025Gift 46,500 shares of Advanced Drainage Systems¹³
• Nov 25, 2025Gift 46,500 shares of Advanced Drainage Systems¹³
• Nov 25, 2025Gift 14,500 shares of Advanced Drainage Systems¹³
• Nov 25, 2025Gift 14,500 shares of Advanced Drainage Systems¹³
• Nov 25, 2025Gift 1,800 shares of Advanced Drainage Systems¹³
• Nov 12, 2025Sold 2,030 shares at $150.66 of Advanced Drainage Systems¹⁴
• Nov 12, 2025Sold 73,462 shares at $148.96 of Advanced Drainage Systems¹⁴
• Nov 12, 2025Sold 4,538 shares at $148.01 of Advanced Drainage Systems¹⁴
• Nov 12, 2025Exercised options 80,030 shares at $25.75 of Advanced Drainage Systems¹⁴
• Nov 7, 2025Granted 144 shares of Allison Transmission¹⁵