Rosemary L. Klein

Companies

• Core Natural Resources, Inc.General counsel Jan 16, 2025 to now¹
• Arch ResourcesSr. VP, Gen Counsel and Secary Jan 22, 2024 to Jan 14, 2025²
• Arch ResourcesGeneral counsel Oct 14, 2020 to Nov 27, 2023³

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• CNCore Natural Resources, Inc. CNR53,679 shares⁴$4.9M at $90.39Mar 19, 2026
• Arch Resources ARCH0 shares⁵Jan 14, 2025

As of each latest filing. The line shows shares held over time.

Recent filings

• Mar 19, 2026Sold 5,000 shares at $110.62 of Core Natural Resources, Inc.⁴
• Mar 19, 2026Sold 10,000 shares at $105.00 of Core Natural Resources, Inc.⁴
• Feb 18, 2026Shares withheld for tax 746 shares at $88.96 of Core Natural Resources, Inc.⁶
• Feb 18, 2026Shares withheld for tax 497 shares at $88.96 of Core Natural Resources, Inc.⁶
• Feb 17, 2026Granted 5,060 shares of Core Natural Resources, Inc.⁶
• Feb 18, 2025Granted 5,124 shares of Core Natural Resources, Inc.⁷
• Feb 18, 2025Granted 5,124 shares of Core Natural Resources, Inc.⁷
• Jan 14, 2025Returned to company 27,457 shares of Arch Resources⁵
• Jan 14, 2025Granted 54,602 shares of Core Natural Resources, Inc.⁸
• Oct 13, 2024Shares withheld for tax 335 shares at $145.86 of Arch Resources⁹
• Oct 13, 2024Exercised options 757 shares of Arch Resources⁹
• Feb 26, 2024Shares withheld for tax 14,013 shares at $169.54 of Arch Resources¹⁰
• Feb 25, 2024Granted 27,499 shares of Arch Resources¹⁰
• Feb 25, 2024Exercised options 5,117 shares of Arch Resources¹⁰
• Feb 12, 2024Shares withheld for tax 530 shares at $171.27 of Arch Resources¹¹
• Feb 10, 2024Exercised options 1,817 shares of Arch Resources¹¹
• Feb 9, 2024Shares withheld for tax 337 shares at $168.68 of Arch Resources¹¹
• Feb 9, 2024Exercised options 1,033 shares of Arch Resources¹¹
• Jan 19, 2024Sold 1,708 shares at $185.00 of Arch Resources¹²
• Nov 24, 2023Sold 158 shares at $165.00 of Arch Resources¹³
• Oct 16, 2023Sold 316 shares at $154.91 of Arch Resources¹⁴
• Oct 13, 2023Shares withheld for tax 336 shares at $154.48 of Arch Resources¹⁴
• Oct 13, 2023Exercised options 758 shares of Arch Resources¹⁴
• Oct 13, 2023Shares withheld for tax 168 shares at $154.48 of Arch Resources¹⁴
• Oct 13, 2023Exercised options 378 shares of Arch Resources¹⁴