Gregory Scott Floerke
CIK 1313785 · Ex VP & COO, MPLX GP LLC · last filed 2026-03-03
Gregory Scott Floerke is an Ex VP & COO, MPLX GP LLC who has filed 53 SEC Form 4 insider transactions across 3 companies since 2015. The most recent filing, for MPLX, was dated Mar 3, 2026. Across all open-market trades the lifetime net is −$2.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $21.0M across reported positions. 12 SEC filings were submitted jointly with Marathon Petroleum Corp.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
MPC price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
200 E HARDIN STREET
FINDLAY, OH 45840
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MPC | Ex VP & COO, MPLX GP LLC | 32,297 | $478.07 | $15.44M | -$1.19M | 10 | 2026-03-03 |
| MPLX | Exec. VP and COO | 96,134 | $58.16 | $5.59M | -$990.6K | 39 | 2026-03-03 |
| MARKWEST ENERGY PARTNERS L P (MWE) Delisted | EVP, Chief Commercial Officer | 19,298 | — | — | $0 | 2 | 2015-12-03 |
Recent Filings
53 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-03-03 | MPLX | Mixed | +3,094 | -$171.3K | EDGAR |
| 2026-03-03 | MPC | Mixed | +923 | -$166.5K | EDGAR |
| 2025-12-16 | MPLX | Tax (F) | −242 | -$13.3K | EDGAR |
| 2025-12-16 | MPC | Tax (F) | −85 | -$15.8K | EDGAR |
| 2025-03-04 | MPC | Mixed | +1,124 | -$144.8K | EDGAR |
| 2025-03-04 | MPLX | Mixed | +2,865 | -$171.1K | EDGAR |
| 2024-12-17 | MPLX | Tax (F) | −333 | -$16.3K | EDGAR |
| 2024-12-17 | MPC | Tax (F) | −77 | -$11.2K | EDGAR |
| 2024-03-05 | MPC | Mixed | +598 | -$223.7K | EDGAR |
| 2024-03-05 | MPLX | Mixed | +5,047 | -$126.6K | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.