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: Hub Group 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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Northern Trust Corporation April 21, 202696.6%
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Hub Group Inc. May 13, 202585.8%
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Northern Trust Corporation April 22, 202596.3%
-
Hub Group Inc. May 23, 202486.0%
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Northern Trust Corporation April 16, 202496.4%
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Hub Group Inc. May 25, 202381.5%
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Northern Trust Corporation April 25, 202397.8%
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 |
|---|---|---|---|---|---|
| Oct 1, 2026 | Northern Trust Corporation | Grant or award | +71 | $169.20 | $11,954 |
| Jul 1, 2026 | Northern Trust Corporation | Grant or award | +62 | $175.60 | $10,817 |
| Apr 21, 2026 | Northern Trust Corporation | Grant or award | +35 | $171.74 | $5,992 |
| Apr 21, 2026 | Northern Trust Corporation | Grant or award | +989 | — | — |
| Apr 1, 2026 | Northern Trust Corporation | Grant or award | +65 | $141.41 | $9,216 |
| Jan 2, 2026 | Hub Group Inc. | Shares withheld for tax | −1,695 | $42.75 | $72,461 |
| Jan 2, 2026 | Hub Group Inc. | Grant or award | +4,679 | — | — |
| Jan 1, 2026 | Northern Trust Corporation | Grant or award | +67 | $136.59 | $9,162 |
| Oct 1, 2025 | Northern Trust Corporation | Grant or award | +69 | $131.20 | $9,107 |
| Jul 1, 2025 | Northern Trust Corporation | Grant or award | +66 | $127.99 | $8,488 |
| Apr 22, 2025 | Northern Trust Corporation | Grant or award | +61 | $89.36 | $5,466 |
| Apr 22, 2025 | Northern Trust Corporation | Grant or award | +1,902 | — | — |
| Apr 1, 2025 | Northern Trust Corporation | Grant or award | +72 | $97.95 | $7,022 |
| Jan 3, 2025 | Hub Group Inc. | Shares withheld for tax | −1,592 | $44.17 | $70,319 |
| Jan 3, 2025 | Hub Group Inc. | Grant or award | +4,528 | — | — |
Questions about Martin P. Slark
What boards is Martin P. Slark on?
Martin P. Slark sits on the boards of Hub Group Inc. and Northern Trust Corporation.
How long has Martin P. Slark served on boards?
Our records show at least 8 years of board service across 2 boards, the earliest from 2023.
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