Filing Manager
Stoney Lonesome HF LP
Reporting Manager
Stoney Lonesome HF LP
Symbol
AMPY
Shares outstanding
40,440,346 shares
Disclosed Ownership
3,154,347 shares
Ownership
7.8%
Form type
SCHEDULE 13D/A
Filing time
24 Jun 2025, 17:01:27 UTC
Date of event
20 Jun 2025
Previous filing
06 Jun 2025
Next filing
14 Aug 2025

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Stoney Lonesome HF LP 7.8% 3,154,347 3,154,347 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