Filing Manager
Stoney Lonesome HF LP
Reporting Manager
Stoney Lonesome HF LP
Symbol
AMPY
Shares outstanding
40,303,687 shares
Disclosed Ownership
2,700,347 shares
Ownership
6.7%
Form type
SCHEDULE 13D/A
Filing time
20 May 2025, 10:27:02 UTC
Date of event
16 May 2025
Previous filing
16 Apr 2025
Next filing
06 Jun 2025

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Stoney Lonesome HF LP 6.7% 2,700,347 2,700,347 0 /s/Clint Coghill Clint Coghill/President of General Partner 0002014854
The Drake Helix Holdings, LLC 0.2% 83,000 83,000 0 /s/Clint Coghill Clint Coghill/President
Clint Coghill 0% 2,410 2,410 0 /s/Clint Coghill Clint Coghill