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.
Mplx LP
Director · Exec VP and CFO
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 | — | — |
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