Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 8 years
- Director since
- 2023
8 years of board service in total across 2 boards, counting each seat separately. Longest: Allison Transmission Holdings Inc., 3 years.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
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Advanced Drainage Systems Inc. July 16, 202699.2%
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Allison Transmission Holdings Inc. May 6, 202699.5%
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Advanced Drainage Systems Inc. July 15, 202599.2%
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Allison Transmission Holdings Inc. May 7, 202599.1%
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Advanced Drainage Systems Inc. July 18, 202499.0%
-
Allison Transmission Holdings Inc. May 8, 202498.8%
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Advanced Drainage Systems Inc. July 20, 202399.4%
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Allison Transmission Holdings Inc. May 3, 202398.7%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Aug 20, 2026 | Advanced Drainage Systems Inc. | Gift | −2,000 | — | — |
| Jun 12, 2026 | Advanced Drainage Systems Inc. | Other | −511 | $135.72 | $69,353 |
| Jun 12, 2026 | Advanced Drainage Systems Inc. | Other | +511 | $135.72 | $69,353 |
| May 26, 2026 | Advanced Drainage Systems Inc. | Grant or award | +9,036 | — | — |
| May 22, 2026 | Advanced Drainage Systems Inc. | Shares withheld for tax | −1,898 | $133.00 | $252,434 |
| May 20, 2026 | Advanced Drainage Systems Inc. | Shares withheld for tax | −1,130 | $136.83 | $154,618 |
| May 20, 2026 | Advanced Drainage Systems Inc. | Grant or award | +29,327 | — | — |
| May 19, 2026 | Advanced Drainage Systems Inc. | Shares withheld for tax | −934 | $131.59 | $122,905 |
| May 6, 2026 | Allison Transmission Holdings Inc. | Grant or award | +92 | — | — |
| May 6, 2026 | Allison Transmission Holdings Inc. | Option exercise | +1,586 | — | — |
| Mar 13, 2026 | Advanced Drainage Systems Inc. | Gift | −7,150 | — | — |
| Mar 13, 2026 | Advanced Drainage Systems Inc. | Gift | +7,150 | — | — |
| Mar 4, 2026 | Advanced Drainage Systems Inc. | Gift | −511 | — | — |
| Mar 4, 2026 | Advanced Drainage Systems Inc. | Gift | +511 | — | — |
| Feb 6, 2026 | Allison Transmission Holdings Inc. | Grant or award | +102 | — | — |
Questions about D. Scott Barbour
What boards is D. Scott Barbour on?
D. Scott Barbour sits on the boards of Advanced Drainage Systems Inc. and Allison Transmission Holdings Inc.
How long has D. Scott Barbour served on boards?
Our records show at least 8 years of board service across 2 boards, the earliest from 2023.
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