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Who

Phillip Lancaster

Director

Company insider

Files Form 4 as: Director, Mammoth Energy Services; Director, Gulfport Energy.

In numbers

Trades disclosed
3
Buys
0
Sells
0
Bought
$0
Sold
$0
Companies
2
Companies where not an officer
2
First trade
14 Feb 2006
Last trade
26 Jun 2026
Last filed
1 Jul 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
TUSK Mammoth Energy ServicesDirector · Oilfield services · last 26 Jun 20260 buys · 0 sells
GPOR Gulfport EnergyDirector · Oil & Gas E&P · last 14 Feb 20060 buys · 0 sells

Activity over time

Not enough dated trades to draw.

Every trade

TradedCompanyWhatAmount
26 Jun 2026filed 1 Jul 2026TUSK Mammoth Energy ServicesOilfield servicesSEC FORM 4 Code J—68,152 at $0.00filing
26 Jun 2026filed 1 Jul 2026TUSK Mammoth Energy ServicesOilfield servicesSEC FORM 4 Code J—68,152 at $0.00filing
14 Feb 2006filed 15 Feb 2006GPOR Gulfport Energyoption or derivative · Oil & Gas E&PSEC FORM 4 Code A—40,000filing

News

No headline names them, or the companies they trade most, lately.

Sectors

No trade we could place in a sector.

Related people

Mark Lawrence PlaumannDirector · Director at Mammoth Energy Services, filing Form 4 there in the last year
WEXFORD CAPITAL LP10% owner · Chief Business Officer at Mammoth Energy Services, filing Form 4 there in the last year
Arthur H. AmronDirector · Director at Mammoth Energy Services, filing Form 4 there in the last year
Paul M. JacobiChief Business Officer · Chief Business Officer at Mammoth Energy Services, filing Form 4 there in the last year
Charles E. Davidson10% owner · 10% owner at Mammoth Energy Services, filing Form 4 there in the last year