Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Kirby Corporation, 3 years.
Kirby Corporation
Director
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Kirby Corporation April 29, 202593.3%
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 4, 2026 | Kirby Corporation | Grant or award | +1,392 | — | — |
| May 5, 2025 | Kirby Corporation | Grant or award | +1,923 | — | — |
| Nov 25, 2024 | Kirby Corporation | Open-market sale | −40,001 | $130.14 | $5,205,730 |
| May 15, 2024 | Kirby Corporation | Open-market sale | −10,000 | $114.51 | $1,145,100 |
| Apr 29, 2024 | Kirby Corporation | Grant or award | +1,828 | — | — |
| Apr 24, 2024 | Kirby Corporation | Option exercise | +6,000 | $99.52 | $597,120 |
| Apr 24, 2024 | Kirby Corporation | Shares withheld for tax | −5,910 | $101.05 | $597,206 |
| May 1, 2023 | Kirby Corporation | Grant or award | +2,767 | — | — |
| May 1, 2023 | Kirby Corporation | Grant or award | +1,240 | — | — |
| Dec 29, 2022 | Kirby Corporation | Option exercise | +10,000 | $61.89 | $618,900 |
| Dec 29, 2022 | Kirby Corporation | Shares withheld for tax | −9,635 | $64.24 | $618,952 |
Questions about William M. Waterman
What boards is William M. Waterman on?
William M. Waterman sits on the board of Kirby Corporation.
How long has William M. Waterman served on boards?
Our records show at least 4 years of board service across 1 board, the earliest from 2023.
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