Plaumann Mark Lawrenceinsider trades

In SEC Form 4 filings, Plaumann Mark Lawrence is listed as Director of Mammoth Energy Services, Inc. (TUSK) and Director of Diamondback Energy, Inc. (FANG). In the last 90 days, Plaumann Mark Lawrence bought $15K of Mammoth Energy Services, Inc. (TUSK) and sold $210.6K of Diamondback Energy, Inc. (FANG) on the open market. The purchase was $15K of Mammoth Energy Services, Inc. (TUSK) on Sep 16.

Companies and roles

Company	Role	Transactions	Last filed
TUSKMammoth Energy Services, Inc.	Director	1	Sep 17
FANGDiamondback Energy, Inc.	Director	1	Aug 24

Cluster buys

No cluster buy in the last 90 days included a purchase by this insider (two or more insiders buying within 14 days).

Form 4 historysince 2026-08-24

Company	Traded	Filed	Type	Shares	Price	Value	Owned after	10b5-1 plan	Filing
TUSKMammoth Energy Services, Inc.	Sep 16	Sep 17	P	5,000	$3.00	Purchase +$15,000	5,000	No	Form 4
FANGDiamondback Energy, Inc.	Aug 21	Aug 24	S	1,000	$210.58	Sale −$210,577	12,437	No	Form 4

Published from this insider's public Form 4 filings on SEC EDGAR; the name is shown as filed. Named in a filing and want this page removed? See the privacy policy.