Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 5 years
- Director since
- 2023
5 years of board service in total across 2 boards, counting each seat separately. Longest: Transdigm Group Incorporated, 3 years.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Perimeter Solutions SA May 28, 202688.4%
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Transdigm Group Incorporated March 5, 202697.5%
-
Perimeter Solutions SA May 29, 202598.7%
-
Transdigm Group Incorporated March 6, 202597.1%
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Perimeter Solutions SA May 23, 202494.0%
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Transdigm Group Incorporated March 7, 202497.3%
-
Perimeter Solutions SA June 22, 202399.7%
-
Transdigm Group Incorporated March 9, 202367.0%
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 |
|---|---|---|---|---|---|
| Sep 18, 2026 | Transdigm Group Incorporated | Grant or award | +46 | $1,085.00 | $49,910 |
| Mar 20, 2026 | Transdigm Group Incorporated | Grant or award | +41 | $1,214.66 | $49,801 |
| Sep 19, 2025 | Transdigm Group Incorporated | Grant or award | +36 | $1,288.13 | $46,373 |
| May 20, 2025 | Transdigm Group Incorporated | Option exercise | +4,700 | $156.47 | $735,409 |
| May 20, 2025 | Transdigm Group Incorporated | Open-market sale | −3,000 | $1,435.77 | $4,307,310 |
| May 20, 2025 | Transdigm Group Incorporated | Open-market sale | −664 | $1,437.07 | $954,214 |
| May 20, 2025 | Transdigm Group Incorporated | Open-market sale | −636 | $1,437.85 | $914,473 |
| May 20, 2025 | Transdigm Group Incorporated | Open-market sale | −300 | $1,438.89 | $431,667 |
| May 20, 2025 | Transdigm Group Incorporated | Open-market sale | −100 | $1,439.92 | $143,992 |
| Mar 26, 2025 | Transdigm Group Incorporated | Grant or award | +35 | $1,346.50 | $47,128 |
| Sep 25, 2024 | Transdigm Group Incorporated | Grant or award | +34 | $1,367.76 | $46,504 |
| Mar 22, 2024 | Transdigm Group Incorporated | Grant or award | +31 | $1,172.20 | $36,338 |
| Jan 22, 2024 | Transdigm Group Incorporated | Open-market purchase | +0 | $1,065.40 | $511 |
| Dec 22, 2023 | Transdigm Group Incorporated | Small acquisition | +0 | $1,001.05 | $200 |
| Dec 22, 2023 | Transdigm Group Incorporated | Small acquisition | +0 | $1,003.40 | $100 |
Questions about Sean P. Hennessy
What boards is Sean P. Hennessy on?
Sean P. Hennessy sits on the boards of Perimeter Solutions SA and Transdigm Group Incorporated.
How long has Sean P. Hennessy served on boards?
Our records show at least 5 years of board service across 2 boards, the earliest from 2023.
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