Insiders · Profile

Plaumann Mark Lawrence

Director at MAMMOTH ENERGY SERVICES · Director at Diamondback Energy. Filing since 14 Sep 2015. CIK 0001290795

Company
Date
Role
Action
Shares
Amount
Of holding
16 Sep 2026
Director
Bought
5,000
$15.00K
opened
21 Aug 2026
Director
Sold at will
1,000
$210.58K
7.4%
9 Jun 2026
Director
Sold at will
500
$98.25K
3.6%
13 Nov 2024
Director
Sold at will
1,150
$208.15K
19.6%
13 Nov 2024
Director
Sold at will
240
$43.44K
2.5%
23 May 2017
Director
Sold, plan not stated
1,000
$101.52K
13.3%
17 Feb 2017
Director
Sold, plan not stated
1,900
$203.97K
20.2%
14 Sep 2015
Director
Sold, plan not stated
3,000
$196.97K
27.2%
8 decisions on file.