Time on boards
- Boards served
- 3
- Current seats
- 3
- Board service
- 11 years
- Director since
- 2023
11 years of board service in total across 3 boards, counting each seat separately. Longest: Johnson Controls International plc, 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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Johnson Controls International plc March 4, 202693.9%
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Ingevity Corporation April 30, 202596.6%
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Johnson Controls International plc March 12, 202594.0%
-
Ingevity Corporation April 23, 202498.3%
-
Johnson Controls International plc March 13, 202498.0%
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Ingevity Corporation April 27, 202399.0%
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Celanese Corporation April 20, 202399.3%
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Johnson Controls International plc March 8, 202397.9%
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 |
|---|---|---|---|---|---|
| Mar 4, 2026 | Johnson Controls International plc | Grant or award | +1,285 | — | — |
| Mar 4, 2026 | Johnson Controls International plc | Shares withheld for tax | −1,115 | $140.00 | $156,100 |
| Nov 13, 2025 | Johnson Controls International plc | Gift | −4,890 | — | — |
| May 1, 2025 | Ingevity Corporation | Grant or award | +4,057 | — | — |
| Mar 12, 2025 | Johnson Controls International plc | Grant or award | +2,287 | — | — |
| Mar 12, 2025 | Johnson Controls International plc | Shares withheld for tax | −1,416 | $78.68 | $111,411 |
| Apr 24, 2024 | Ingevity Corporation | Grant or award | +2,800 | — | — |
| Mar 13, 2024 | Johnson Controls International plc | Grant or award | +2,889 | — | — |
| Mar 9, 2024 | Johnson Controls International plc | Shares withheld for tax | −1,401 | $61.73 | $86,484 |
| May 12, 2023 | Celanese Corporation | Grant or award | +1,777 | $98.46 | $174,963 |
| Apr 28, 2023 | Ingevity Corporation | Grant or award | +1,645 | — | — |
| Mar 9, 2023 | Johnson Controls International plc | Grant or award | +2,843 | — | — |
| Mar 8, 2023 | Johnson Controls International plc | Option exercise | −1,372 | $63.46 | $87,067 |
Questions about Jean S. Blackwell
What boards is Jean S. Blackwell on?
Jean S. Blackwell sits on the boards of Celanese Corporation, Ingevity Corporation and Johnson Controls International plc.
How long has Jean S. Blackwell served on boards?
Our records show at least 11 years of board service across 3 boards, the earliest from 2023.
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