Stoney Lonesome HF LP - 16 Mar 2026 SCHEDULE 13D/A Report for Amplify Energy Corp. Common Stock, $0.01 par value per share (AMPY)

Filing Manager
Stoney Lonesome HF LP
Reporting Manager
COGHILL CLINT D
Security
Amplify Energy Corp. Common Stock, $0.01 par value per share
Symbol
AMPY
Shares outstanding
41,107,254 shares
Disclosed Ownership
2,589,757 shares
Ownership
6.3%
Form type
SCHEDULE 13D/A
Filing time
17 Mar 2026, 17:34:01 UTC
Date of event
16 Mar 2026
Previous filing
14 Aug 2025
SEC
View on sec.gov

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Quoteable Key Fact

"Stoney Lonesome HF LP disclosed 6.3% ownership in Amplify Energy Corp. Common Stock, $0.01 par value per share (AMPY) on 16 Mar 2026."

Quick Takeaways

  • Stoney Lonesome HF LP filed SCHEDULE 13D/A for Amplify Energy Corp. Common Stock, $0.01 par value per share (AMPY).
  • Disclosed ownership: 6.3%.
  • Date of event: 16 Mar 2026.

What Changed

  • Previous schedule filing date: 14 Aug 2025.
  • Current filing was accepted on 17 Mar 2026, 17:34.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Official SEC Source

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (5)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Stoney Lonesome HF LP 6.1% 2,504,347 0 2,504,347 /s/ Clint D. Coghill Clint D. Coghill, President and sole shareholder of the managing member of its general partner 0002014854
COGHILL CAPITAL MANAGEMENT LLC 6.1% 2,504,347 0 2,504,347 /s/ Clint D. Coghill Clint D. Coghill, President and sole shareholder of its managing member 0001162675
Drake Helix Holdings, LLC 0.2% 83,000 0 83,000 /s/ Clint D. Coghill Clint D. Coghill, President and sole shareholder of its managing member 0002077865
CDC Financial, Inc. 6.3% 2,587,347 0 2,587,347 /s/ Clint D. Coghill Clint D. Coghill, President and sole shareholder 0002077836
COGHILL CLINT D 6.3% 2,589,757 2,410 2,587,347 /s/ Clint D. Coghill Clint D. Coghill 0001235155

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