275 TECHNOLOGY DRIVE, CANONSBURG, PA
Reports Fourth Quarter 2025 Results
Mine Safety - Reporting of Shutdowns and Patterns of Violations
Announces Resumption of Longwall Mining at Leer South
Reports Third Quarter 2025 Results
Announces Leadership Change
Reports Second Quarter 2025 Results
News, Material Contracts
Provides Update on Ongoing Efforts to Resume Longwall Operations at Leer South
Amended Annual Report
FY 2024
Q3
Q2
Q1
Prospectus Filed Pursuant to Rule 425
Effectiveness Notice
Prospectus filed pursuant to Rule 424(b)(3)
S-4/A
Additional Proxy Materials
Definitive Proxy Statement
PRE 14A
Amended Schedule 13G - Ownership Report
Statement of Changes in Beneficial Ownership
Notice of Proposed Sale of Securities
Specialized Disclosure Report
Schedule 13G - Ownership Report