Time on boards
- Boards served
- 3
- Current seats
- 3
- Board service
- 9 years
- Director since
- 2023
9 years of board service in total across 3 boards, counting each seat separately. Longest: SunCoke Energy 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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Matrix Service Company November 3, 202698.6%
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SunCoke Energy Inc. May 14, 202684.6%
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Matrix Service Company November 4, 202596.7%
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Core Laboratories Inc. May 21, 202593.0%
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Matrix Service Company November 6, 202496.9%
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Matrix Service Company November 14, 202389.1%
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SunCoke Energy Inc. May 11, 202392.6%
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 |
|---|---|---|---|---|---|
| Nov 3, 2026 | Matrix Service Company | Grant or award | +10,325 | — | — |
| Apr 1, 2026 | Core Laboratories Inc. | Option exercise | +8,069 | — | — |
| Nov 4, 2025 | Matrix Service Company | Grant or award | +7,986 | — | — |
| Apr 1, 2025 | Core Laboratories Inc. | Option exercise | +9,317 | — | — |
| Nov 5, 2024 | Matrix Service Company | Grant or award | +8,290 | — | — |
| Apr 1, 2024 | Core Laboratories Inc. | Option exercise | +6,419 | — | — |
| Nov 14, 2023 | Matrix Service Company | Grant or award | +7,991 | — | — |
Questions about Martha Z. Carnes
What boards is Martha Z. Carnes on?
Martha Z. Carnes sits on the boards of Core Laboratories Inc., Matrix Service Company and SunCoke Energy Inc.
How long has Martha Z. Carnes served on boards?
Our records show at least 9 years of board service across 3 boards, the earliest from 2023.
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