Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 3 years
- Director since
- 2024
3 years of board service in total across 1 board, counting each seat separately. Longest: Martin Marietta Materials Inc., 2 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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Martin Marietta Materials Inc. May 14, 202699.5%
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Martin Marietta Materials Inc. May 15, 202599.9%
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Martin Marietta Materials Inc. May 16, 202499.8%
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 |
|---|---|---|---|---|---|
| May 14, 2026 | Martin Marietta Materials Inc. | Grant or award | +313 | — | — |
| May 15, 2025 | Martin Marietta Materials Inc. | Grant or award | +308 | $552.86 | $170,281 |
| May 16, 2024 | Martin Marietta Materials Inc. | Grant or award | +293 | $581.69 | $170,435 |
Questions about Mary T. Mack
What boards is Mary T. Mack on?
Mary T. Mack sits on the board of Martin Marietta Materials Inc.
How long has Mary T. Mack served on boards?
Our records show at least 3 years of board service across 1 board, the earliest from 2024.
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