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Insider Trading Intelligence
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GF

Gregory Scott Floerke

MPLX
EXEC. VP AND COO · MPLX LP · CIK 0001313785
FILING MIX · LIFETIME24%/76%
BUYS
17
SELLS
54
TOTAL VALUE
$3.70M
COMPANIES
2
ACTIVE SINCE
Jan 2020
HOLDINGS NOW
127,443
AVG SELL PX
$62.30
TRADE KIND
SHOWING 71 / 71
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
9 backtested trades · 8 horizons
Forward-return performance of every backtestable P/S trade by Gregory Scott Floerke, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d9+33.33%+0.51%-1.26%+1.77%+1.14%—
14d9+77.78%-2.19%-1.35%-0.84%-1.10%—
30d9+44.44%+0.04%-0.93%+0.96%-0.12%—
60d9+11.11%+3.15%-0.31%+3.46%+1.98%—
90d9+44.44%+5.74%-0.85%+6.59%+7.00%—
180d9+22.22%+17.20%+2.59%+14.62%+12.82%—
1y9+0.00%+28.51%+6.33%+22.17%+18.24%—
2y9+0.00%+44.09%+11.60%+32.48%+29.71%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
MPLX · 96,134 shares · as of Mar 2, 2026
024,55749,11573,67298,229202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 17 buys / 54 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
278$206.30$57.4K31,560Mar 2, 2026Mar 3, 2026 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
278$206.30$57.4K31,031Mar 2, 2026Mar 3, 2026 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
251$206.30$51.8K31,309Mar 2, 2026Mar 3, 2026 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
995$59.22$58.9K97,234Mar 2, 2026Mar 3, 2026 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
797$59.22$47.2K95,337Mar 2, 2026Mar 3, 2026 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
1,100$59.22$65.1K96,134Mar 2, 2026Mar 3, 2026 ↗View →
MPLX
MPLX LP
PURCHASEGRANT
Stock grant
5,986——98,229Mar 1, 2026Mar 3, 2026 ↗View →
MPC
MARATHON PETROLEUM CORP
PURCHASEGRANT
Stock grant
1,730——31,838Mar 1, 2026Mar 3, 2026 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
85$185.77$15.8K30,108Dec 12, 2025Dec 16, 2025 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
242$54.85$13.3K92,243Dec 12, 2025Dec 16, 2025 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
1,100$54.34$59.8K92,485Mar 3, 2025Mar 4, 2025 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
1,054$54.34$57.3K94,580Mar 3, 2025Mar 4, 2025 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
995$54.34$54.1K93,585Mar 3, 2025Mar 4, 2025 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
278$148.65$41.3K30,444Mar 3, 2025Mar 4, 2025 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
445$148.65$66.1K30,722Mar 3, 2025Mar 4, 2025 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
251$148.65$37.3K30,193Mar 3, 2025Mar 4, 2025 ↗View →
MPC
MARATHON PETROLEUM CORP
PURCHASEGRANT
Stock grant
2,098——31,167Mar 1, 2025Mar 4, 2025 ↗View →
MPLX
MPLX LP
PURCHASEGRANT
Stock grant
6,014——95,634Mar 1, 2025Mar 4, 2025 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
77$145.56$11.2K29,069Dec 13, 2024Dec 17, 2024 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
333$48.86$16.3K89,620Dec 13, 2024Dec 17, 2024 ↗View →
MPLX
MPLX LP
PURCHASEGRANT
Stock grant
8,303——89,953Mar 1, 2024Mar 5, 2024 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
995$38.87$38.7K81,650Mar 1, 2024Mar 5, 2024 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
1,207$38.87$46.9K83,699Mar 1, 2024Mar 5, 2024 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
1,054$38.87$41.0K82,645Mar 1, 2024Mar 5, 2024 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
445$172.34$76.7K27,528Mar 1, 2024Mar 5, 2024 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
575$172.34$99.1K27,973Mar 1, 2024Mar 5, 2024 ↗View →
MPC
MARATHON PETROLEUM CORP
PURCHASEGRANT
Stock grant
1,896——29,146Mar 1, 2024Mar 5, 2024 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
278$172.34$47.9K27,250Mar 1, 2024Mar 5, 2024 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
85$151.42$12.9K28,548Dec 1, 2023Dec 5, 2023 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
301$36.61$11.0K84,906Dec 1, 2023Dec 5, 2023 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
8,189——0Aug 10, 2023Aug 14, 2023 ↗View →
MPC
MARATHON PETROLEUM CORP
PURCHASE
Ex VP & COO, MPLX GP LLC
8,189$47.73$390.9K36,822Aug 10, 2023Aug 14, 2023 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
8,189$145.80$1.19M28,633Aug 10, 2023Aug 14, 2023 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
575$126.52$72.7K26,821Mar 1, 2023Mar 3, 2023 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
284$126.52$35.9K26,537Mar 1, 2023Mar 3, 2023 ↗View →
MPC
MARATHON PETROLEUM CORP
PURCHASEGRANT
Stock grant
2,096——28,633Mar 1, 2023Mar 3, 2023 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
436$126.52$55.2K27,396Mar 1, 2023Mar 3, 2023 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
727$34.54$25.1K79,963Mar 1, 2023Mar 3, 2023 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
1,053$34.54$36.4K77,703Mar 1, 2023Mar 3, 2023 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
1,207$34.54$41.7K78,756Mar 1, 2023Mar 3, 2023 ↗View →
MPLX
MPLX LP
PURCHASEGRANT
Stock grant
7,504——85,207Mar 1, 2023Mar 3, 2023 ↗View →
MPC
MARATHON PETROLEUM CORP
PURCHASEGRANT
Stock grant
842——27,832Jan 26, 2023Jan 30, 2023 ↗View →
MPLX
MPLX LP
PURCHASEGRANT
Stock grant
798——80,690Jan 25, 2023Jan 27, 2023 ↗View →
MPC
MARATHON PETROLEUM CORP
SALE
Ex VP & COO, MPLX GP LLC
135$118.23$16.0K26,990Dec 2, 2022Dec 6, 2022 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
320$33.82$10.8K79,892Dec 2, 2022Dec 6, 2022 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
2,500$35.00$87.5K80,212Apr 19, 2022Apr 21, 2022 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
257$32.63$8.4K76,579Mar 1, 2022Mar 3, 2022 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
730$32.63$23.8K75,849Mar 1, 2022Mar 3, 2022 ↗View →
MPLX
MPLX LP
PURCHASEGRANT
Stock grant
7,952——82,712Mar 1, 2022Mar 3, 2022 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
1,089$32.63$35.5K74,760Mar 1, 2022Mar 3, 2022 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
2,500$33.20$83.0K76,836Feb 7, 2022Feb 9, 2022 ↗View →
MPLX
MPLX LP
PURCHASEGRANT
Stock grant
780——79,336Jan 25, 2022Jan 27, 2022 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
367$29.68$10.9K78,556Nov 19, 2021Nov 23, 2021 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
2,500$31.27$78.2K81,423Nov 8, 2021Nov 10, 2021 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
2,500$31.25$78.1K78,923Nov 8, 2021Nov 10, 2021 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
2,500$27.00$67.5K83,923May 6, 2021May 10, 2021 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
256$24.59$6.3K77,794Mar 1, 2021Mar 3, 2021 ↗View →
MPLX
MPLX LP
PURCHASEGRANT
Stock grant
9,110——86,423Mar 1, 2021Mar 3, 2021 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
609$24.59$15.0K78,050Mar 1, 2021Mar 3, 2021 ↗View →
MPLX
MPLX LP
SALE
Exec. VP and COO
481$24.59$11.8K77,313Mar 1, 2021Mar 3, 2021 ↗View →
MPLX
MPLX LP
PURCHASEGRANT
Stock grant
2,254——78,659Jan 28, 2021Feb 1, 2021 ↗View →
MPLX
MPLX LP
SALE
COO and Exec. VP
2,500$25.00$62.5K76,405Jan 13, 2021Jan 15, 2021 ↗View →
MPLX
MPLX LP
SALE
COO and Exec. VP
81$21.50$1.7K78,905Dec 28, 2020Dec 30, 2020 ↗View →
MPLX
MPLX LP
SALE
COO and Exec. VP
97$21.50$2.1K78,986Dec 28, 2020Dec 30, 2020 ↗View →
MPLX
MPLX LP
SALE
COO and Exec. VP
2,500$23.00$57.5K79,083Dec 4, 2020Dec 8, 2020 ↗View →
MPLX
MPLX LP
SALE
COO and Exec. VP
2,500$21.00$52.5K81,583Nov 18, 2020Nov 20, 2020 ↗View →
MPLX
MPLX LP
SALE
Exec VP, Gathering & Proc
1,051$20.08$21.1K79,542Mar 2, 2020Mar 4, 2020 ↗View →
MPLX
MPLX LP
SALE
Exec VP, Gathering & Proc
1,235$20.08$24.8K80,593Mar 2, 2020Mar 4, 2020 ↗View →
MPLX
MPLX LP
SALE
Exec VP, Gathering & Proc
442$20.08$8.9K79,100Mar 2, 2020Mar 4, 2020 ↗View →
MPLX
MPLX LP
PURCHASEGRANT
Stock grant
4,983——84,083Mar 2, 2020Mar 4, 2020 ↗View →
MPLX
MPLX LP
PURCHASEGRANT
Stock grant
3,090——81,828Jan 24, 2020Jan 28, 2020 ↗View →
Other insiders · MPLX
Loading peer insiders…
About this filer
CIK 0001313785
ROLE
Exec. VP and COO
PRIMARY
MPLX
COMPANIES
2
ACTIVE SINCE
Jan 2020
MARKETPEEL · /INSIDER/0001313785DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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