1 unchanged sentence
SECURITIES TRADING PLANS OF SECTION 16 OFFICERS AND DIRECTORS
−Removed: During the three months ended March 31, 2026, none of our Section 16 officers or directors adopted or terminated a Rule 10b5-1 or non-Rule 10b5-1 trading arrangement as defined in Item 408(a) of Regulation S-K.
+Added: During the three months ended June 30, 2026, none of our Section 16 officers or directors adopted or terminated a Rule 10b5-1 or non-Rule 10b5-1 trading arrangement as defined in Item 408(a) of Regulation S-K.
Part II Other Information
8 unchanged sentences
MSHA Citations and Litigation
−Removed: The following unaudited financial information from this Quarterly Report on Form 10-Q for the quarter ended March 31, 2026 are formatted in iXBRL (Inline eXtensible Business Reporting Language):
+Added: The following unaudited financial information from this Quarterly Report on Form 10-Q for the quarter ended June 30, 2026 are formatted in iXBRL (Inline eXtensible Business Reporting Language):
(i) the Condensed Consolidated Balance Sheets, (ii) the Condensed Consolidated Statements of Comprehensive Income, (iii) the Condensed Consolidated Statements of Cash Flows and (iv) the Notes to Condensed Consolidated Financial Statements.
−Removed: Cover Page Interactive Data File – the cover page from this Quarterly Report on Form 10-Q for the quarter ended March 31, 2026 is formatted in iXBRL (contained in Exhibit 101).
+Added: Cover Page Interactive Data File – the cover page from this Quarterly Report on Form 10-Q for the quarter ended June 30, 2026 is formatted in iXBRL (contained in Exhibit 101).
Our SEC file number for documents filed with the SEC pursuant to the Securities Exchange Act of 1934, as amended, is 001-33841.
4 unchanged sentences
(Principal Accounting Officer)
−Removed: April 29, 2026
+Added: July 29, 2026
/s/ Mary Andrews Carlisle
1 unchanged sentence
(Principal Financial Officer)
−Removed: April 29, 2026
+Added: July 29, 2026
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.