275 TECHNOLOGY DRIVE, CANONSBURG, PA
Changes in Board, Management or Compensation, Reg. FD
Reports Second Quarter 2026 Results
Investor Presentation
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
Q2
Q1
Amended Annual Report
FY 2024
Q3
Prospectus Filed Pursuant to Rule 425
Prospectus filed pursuant to Rule 424(b)(3)
Effectiveness Notice
S-4/A
Additional Proxy Materials
Definitive Proxy Statement
PRE 14A
Initial Statement of Beneficial Ownership
Amended Schedule 13G - Ownership Report
Schedule 13G - Ownership Report
Statement of Changes in Beneficial Ownership
Specialized Disclosure Report