John J. Quaid
Exec VP and CFO at Mplx LP
Sits on 1 board. Last updated September 28, 2026
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: Mplx LP, 3 years.
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 |
|---|---|---|---|---|---|
| Mar 3, 2025 | Marathon Petroleum Corporation | Shares withheld for tax | −535 | $148.65 | $79,528 |
| Mar 3, 2025 | Mplx LP | Shares withheld for tax | −1,267 | $54.34 | $68,849 |
| Mar 3, 2025 | Marathon Petroleum Corporation | Shares withheld for tax | −358 | $148.65 | $53,217 |
| Mar 3, 2025 | Mplx LP | Shares withheld for tax | −1,280 | $54.34 | $69,555 |
| Mar 3, 2025 | Marathon Petroleum Corporation | Shares withheld for tax | −543 | $148.65 | $80,717 |
| Mar 3, 2025 | Mplx LP | Shares withheld for tax | −2,379 | $54.34 | $129,275 |
| Mar 1, 2025 | Marathon Petroleum Corporation | Grant or award | +4,459 | — | — |
| Mar 1, 2025 | Mplx LP | Grant or award | +12,780 | — | — |
| Mar 1, 2024 | Mplx LP | Shares withheld for tax | −980 | $38.87 | $38,093 |
| Mar 1, 2024 | Marathon Petroleum Corporation | Shares withheld for tax | −467 | $172.34 | $80,483 |
| Mar 1, 2024 | Mplx LP | Shares withheld for tax | −1,266 | $38.87 | $49,209 |
| Mar 1, 2024 | Marathon Petroleum Corporation | Shares withheld for tax | −535 | $172.34 | $92,202 |
| Mar 1, 2024 | Mplx LP | Shares withheld for tax | −1,280 | $38.87 | $49,754 |
| Mar 1, 2024 | Marathon Petroleum Corporation | Shares withheld for tax | −358 | $172.34 | $61,698 |
| Mar 1, 2024 | Mplx LP | Grant or award | +16,087 | — | — |
Questions about John J. Quaid
What boards is John J. Quaid on?
John J. Quaid sits on the board of Mplx LP.
How long has John J. Quaid served on boards?
Our records show at least 4 years of board service across 1 board, the earliest from 2023.
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