MarketPeel
Insider Trading Intelligence
Pricing
…
MS

Michael Sluiter

GPOR
SVP OF RESERVOIR ENGINEERING · GULFPORT ENERGY CORP · CIK 0001761731
FILING MIX · LIFETIME29%/71%
BUYS
9
SELLS
22
TOTAL VALUE
$9.90M
COMPANIES
1
ACTIVE SINCE
Feb 2020
HOLDINGS NOW
10,338
AVG SELL PX
$94.79
TRADE KIND
SHOWING 31 / 31
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
7 backtested trades · 8 horizons · 7 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Michael Sluiter, 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
7d7+57.14%-0.52%-0.97%+0.45%-1.09%—
14d7+42.86%+0.07%-1.19%+1.26%-0.44%—
30d7+57.14%+2.52%-0.32%+2.84%+2.09%—
60d7+57.14%-0.08%+2.35%-2.43%-10.11%—
90d7+71.43%-5.25%+3.08%-2.75%-16.37%—
180d7(2 pending)+0.00%+11.13%+12.56%-1.43%-1.83%—
1y7(2 pending)+20.00%+17.62%+16.82%+0.79%+8.61%—
2y7(3 pending)+0.00%+34.77%+43.30%+0.73%+11.98%—
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
GPOR · 10,338 shares · as of May 28, 2026
095,377190,754286,131381,508202120222023202420252026SHARES 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
2026
FLOW · 9 buys / 22 sellsCOVERAGE · 26 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
GPOR
GULFPORT ENERGY CORP
PURCHASEGRANT
Stock grant
1,307——10,338May 28, 2026Jun 1, 2026 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
2,055$213.10$437.9K9,031Mar 5, 2026Mar 6, 2026 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
894$209.13$187.0K11,086Mar 3, 2026Mar 3, 2026 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
9,933$210.00$2.09M11,980Mar 2, 2026Mar 3, 2026 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
838$208.66$174.9K21,913Mar 1, 2026Mar 3, 2026 ↗View →
GPOR
GULFPORT ENERGY CORP
PURCHASEGRANT
Stock grant
2,397——22,751Mar 1, 2026Mar 3, 2026 ↗View →
GPOR
GULFPORT ENERGY CORP
PURCHASEGRANT
Stock grant
17,847——28,268Jan 2, 2026Jan 6, 2026 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
7,914$207.99$1.65M20,354Jan 2, 2026Jan 6, 2026 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
2,571$198.00$509.1K10,421May 14, 2025May 14, 2025 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
895$169.80$152.0K12,992Mar 3, 2025Mar 4, 2025 ↗View →
GPOR
GULFPORT ENERGY CORP
PURCHASEGRANT
Stock grant
2,592——14,372Mar 1, 2025Mar 4, 2025 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
485$169.80$82.4K13,887Mar 1, 2025Mar 4, 2025 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
1,227$157.92$193.8K11,780Jul 21, 2024Jul 23, 2024 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
8,723$159.79$1.39M13,007May 28, 2024May 28, 2024 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
5,000$159.00$795.0K21,730May 24, 2024May 28, 2024 ↗View →
GPOR
GULFPORT ENERGY CORP
PURCHASEGRANT
Stock grant
24,550——37,557May 17, 2024May 21, 2024 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
10,827$158.37$1.71M26,730May 17, 2024May 21, 2024 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
927$142.00$131.6K13,007Mar 3, 2024Mar 5, 2024 ↗View →
GPOR
GULFPORT ENERGY CORP
PURCHASEGRANT
Stock grant
3,099——13,934Mar 1, 2024Mar 5, 2024 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
500$106.44$53.2K10,835Aug 8, 2023Aug 9, 2023 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
1,472$106.61$156.9K11,335Aug 7, 2023Aug 9, 2023 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
810$106.41$86.2K12,807Jul 21, 2023Jul 25, 2023 ↗View →
GPOR
GULFPORT ENERGY CORP
PURCHASEGRANT
Stock grant
6,082——13,617Mar 3, 2023Mar 6, 2023 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
810$84.89$68.8K7,535Jul 21, 2022Jul 22, 2022 ↗View →
GPOR
GULFPORT ENERGY CORP
PURCHASEGRANT
Stock grant
8,345——8,345Jul 21, 2021Jul 23, 2021 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP, Reservoir Engineering
187,544——0May 17, 2021May 17, 2021 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
17,059$0.09$1.5K187,544Feb 26, 2021Mar 1, 2021 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
14,459$1.00$14.5K204,603Aug 6, 2020Aug 10, 2020 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
145,386——219,062Aug 4, 2020Aug 6, 2020 ↗View →
GPOR
GULFPORT ENERGY CORP
PURCHASEGRANT
Stock grant
145,386——381,508Mar 11, 2020May 7, 2020 ↗View →
GPOR
GULFPORT ENERGY CORP
SALE
SVP of Reservoir Engineering
17,060$1.00$17.1K219,062Feb 26, 2020Aug 6, 2020 ↗View →
Other insiders · GPOR
Loading peer insiders…
About this filer
CIK 0001761731
ROLE
SVP of Reservoir Engineering
PRIMARY
GPOR
COMPANIES
1
ACTIVE SINCE
Feb 2020
MARKETPEEL · /INSIDER/0001761731DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
FREE · DAILY · 6 AM ET

The morning brief, before the bell.

One short email. Insider buys, congressional trades, and plain-English analysis.

Feedback