Insider · CIK 0001310202
Rosemary L Klein
Files at ARCH (ARCH RESOURCES, INC.), CNR (Core Natural Resources, Inc.). First filing Mar 20, 2026, latest Mar 20, 2026.
Rosemary L Klein files SEC Form 4 as officer at CNR (Core Natural Resources, Inc.), and also at ARCH (ARCH RESOURCES, INC.). Since Mar 20, 2026, Rosemary L Klein has reported 0 open-market buys worth $0 and 1 open-market sell worth $1.6M, the latest filed on Mar 20, 2026.
A track record needs three past buys with six months of prices behind them; Rosemary L Klein has 0, so none is measured yet.
The newest scored trade: sold $1.6M of CNR on Mar 19, 2026, filed Mar 20, 2026, scored 60 (notable). In the last 12 months: 0 buys worth $0 and 1 sell worth $1.6M.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
CNR: Core Natural Resources, Inc.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 60Notable | Core Natural Resources, Inc. | $1.6M 15,000 shares | -22% | +69% from low0% from high |
Transactions
Every row this insider has filed, 13 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Mar 19, 2026 | CNR Core Natural Resources, Inc. | SOpen-market sale Common stock, par value $0.01 per share | -10,000 | $105.00 | $1.1M | 58,679 | Mar 20, 2026 |
| Mar 19, 2026 | CNR Core Natural Resources, Inc. | SOpen-market sale Common stock, par value $0.01 per share | -5,000 | $110.62 | $553k | 53,679 | Mar 20, 2026 |
| Feb 17, 2026 | CNR Core Natural Resources, Inc. | AGrant or award Common stock, par value $0.01 per share | +5,060 | $0.00 | $0 | 69,910 | Feb 19, 2026 |
| Feb 18, 2026 | CNR Core Natural Resources, Inc. | FTax withholding Common stock, par value $0.01 per share | -497 | $88.96 | $44k | 69,413 | Feb 19, 2026 |
| Feb 18, 2026 | CNR Core Natural Resources, Inc. | FTax withholding Common stock, par value $0.01 per share | -746 | $88.96 | $66k | 68,667 | Feb 19, 2026 |
| Feb 18, 2025 | CNR Core Natural Resources, Inc. | AGrant or award Common stock, par value $0.01 per share | +5,124 | $0.00 | $0 | 59,726 | Feb 20, 2025 |
| Feb 18, 2025 | CNR Core Natural Resources, Inc. | AGrant or award Common stock, par value $0.01 per share | +5,124 | $0.00 | $0 | 64,850 | Feb 20, 2025 |
| Jan 14, 2025 | CNR Core Natural Resources, Inc. | AGrant or award Common stock, par value $0.01 per share | +54,602 | $0.00 | $0 | 54,602 | Jan 16, 2025 |
| Jan 14, 2025 | ARCH ARCH RESOURCES, INC. | DDisposition to issuer Class A Common Stock | -27,457 | - | - | 0 | Jan 14, 2025 |
| Jan 14, 2025 | ARCH ARCH RESOURCES, INC. | DDisposition to issuer Restricted Stock Unitsderivative | -22,853 | - | - | 0 | Jan 14, 2025 |
| Oct 13, 2024 | ARCH ARCH RESOURCES, INC. | MOption exercise Common Stock | +757 | - | - | 27,792 | Oct 15, 2024 |
| Oct 13, 2024 | ARCH ARCH RESOURCES, INC. | FTax withholding Common Stock | -335 | $145.86 | $49k | 27,457 | Oct 15, 2024 |
| Oct 13, 2024 | ARCH ARCH RESOURCES, INC. | MOption exercise Restricted Stock Unitsderivative | -757 | $0.00 | $0 | 757 | Oct 15, 2024 |
Questions about Rosemary L Klein
Answered from the filings on this page, as of the latest one.
Is Rosemary L Klein buying or selling?
In the last 12 months Rosemary L Klein reported 0 open-market buys worth $0 and 1 open-market sell worth $1.6M on SEC Form 4; the latest was sold $1.6M of CNR on Mar 19, 2026. Grants, option exercises and tax withholding are not counted.
How did Rosemary L Klein's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Rosemary L Klein has 0.
Where does Rosemary L Klein file Form 4?
Rosemary L Klein has filed Form 4 at CNR (Core Natural Resources, Inc.) as SVP, CLO & Corp. Sec.; ARCH (ARCH RESOURCES, INC.) as Sr. VP, Gen Counsel and Secary. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.