275 TECHNOLOGY DRIVE, CANONSBURG, PA
Mine Safety - Reporting of Shutdowns and Patterns of Violations
Reports First Quarter 2026 Results
Ted Doheny and Ron Keating Elected to Board of Directors
Reports Fourth Quarter 2025 Results
Announces Resumption of Longwall Mining at Leer South
Reports Third Quarter 2025 Results
Q1
Amended Annual Report
FY 2024
Q3
Q2
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
Schedule 13G - Ownership Report
Amended Schedule 13G - Ownership Report
Initial Statement of Beneficial Ownership
Statement of Changes in Beneficial Ownership
Specialized Disclosure Report