secwatch / observer
8-K filed August 19, 2026, 8:04 AM ET ticker CNR CIK 0001710366
leadership confidence high sentiment neutral materiality 0.55

Core Natural Resources names Nathan Tucker CFO; Thakkar expands to operations role

Core Natural Resources, Inc.

Executive movements

Machine-extracted from this filing. Every card cites the SEC source. See all recent executive movements.

Appointed

Nathan Tucker

Senior Vice President and Chief Financial Officer
CNR · Core Natural Resources, Inc.
Effective
2026-08-18
Filed
August 19, 2026, 8:04 AM ET
the Board of Directors (the “Board”) of Core Natural Resources, Inc. (the “Company”) appointed Nathan Tucker to serve as the Company’s Senior Vice President and Chief Financial Officer, effective immediately, taking over the Chief Financial Officer role from Mitesh Thakkar
Role change

Mitesh Thakkar

President
CNR · Core Natural Resources, Inc.
Effective
2026-08-18
Filed
August 19, 2026, 8:04 AM ET
who will continue to serve as President of the Company and is assuming an expanded role with day-to-day responsibility for the Company’s primary operating functions, including operations, marketing, logistics, and long-term strategy.

Key facts

Extracted from this filing and checked against the source text.

Executive change SEC 8-K Item 5.02 confidence 0.95

Nathan Tucker was appointed as Senior Vice President and Chief Financial Officer at Core Natural Resources, Inc..

Action
appointed
Role
Senior Vice President and Chief Financial Officer
Exact text from the filing
the Board of Directors (the “Board”) of Core Natural Resources, Inc. (the “Company”) appointed Nathan Tucker to serve as the Company’s Senior Vice President and Chief Financial Officer, effective immediately, taking over the Chief Financial Officer role from Mitesh Thakkar
View on SEC.gov
Executive change SEC 8-K Item 5.02 confidence 0.9

Mitesh Thakkar changed role as President at Core Natural Resources, Inc..

Action
expanded
Role
President
Exact text from the filing
who will continue to serve as President of the Company and is assuming an expanded role with day-to-day responsibility for the Company’s primary operating functions, including operations, marketing, logistics, and long-term strategy.
View on SEC.gov

Core Natural Resources, Inc. filing history →

Source: SEC EDGAR
accession 0001193125-26-356186
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