Mark Spurbeck
Insider
First SEC filing: June 10, 2026 · Latest: June 10, 2026
Insider at
Insider transactions
0 buys (P)
1 sells (S)
Net: $-1,067,400
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Sept. 3, 2026 | BTU | A | 92 | $27.64 | $2,543 | 68,652 Direct | +0.13% | Acquired | -9.1% (price as of 2026-10-05) |
| June 8, 2026 | BTU | A | 89 | $28.19 | $2,509 | 68,560 Direct | +0.13% | Acquired | -10.9% (price as of 2026-10-05) |
| March 10, 2026 | BTU | A | 77 | $32.56 | $2,507 | 68,471 Direct | +0.11% | Acquired | -22.8% (price as of 2026-10-05) |
| March 4, 2026 | BTU | S | 30,000 | $35.58 | $1,067,400 | 68,394 Direct | -30.49% | Disposed | -29.4% (price as of 2026-10-05) |
| Feb. 18, 2026 | BTU | A | 17,136 | · | · | 105,943 Direct | +19.30% | Acquired | (price as of 2026-10-05) |
| Feb. 18, 2026 | BTU | F | 7,549 | $33.29 | $251,306 | 98,394 Direct | -7.13% | Disposed | -24.5% (price as of 2026-10-05) |
| Jan. 2, 2026 | BTU | A | 14,626 | · | · | 96,618 Direct | +17.84% | Acquired | (price as of 2026-10-05) |
| Jan. 2, 2026 | BTU | F | 7,811 | $30.68 | $239,641 | 88,807 Direct | -8.08% | Disposed | -18.1% (price as of 2026-10-05) |
| Dec. 3, 2025 | BTU | A | 92 | $29.43 | $2,708 | 81,992 Direct | +0.11% | Acquired | -14.6% (price as of 2026-10-05) |
| Sept. 3, 2025 | BTU | A | 159 | $17.09 | $2,717 | 81,900 Direct | +0.19% | Acquired | 47.0% (price as of 2026-10-05) |
| June 4, 2025 | BTU | A | 312 | $13.40 | $4,181 | 81,741 Direct | +0.38% | Acquired | 87.5% (price as of 2026-10-05) |
| March 11, 2025 | BTU | A | 84 | $13.81 | $1,160 | 81,429 Direct | +0.10% | Acquired | 82.0% (price as of 2026-10-05) |
| Jan. 3, 2025 | BTU | F | 2,546 | $20.23 | $51,506 | 81,345 Direct | -3.03% | Disposed | 24.2% (price as of 2026-10-05) |
| Jan. 2, 2025 | BTU | A | 20,373 | · | · | 83,891 Direct | +32.07% | Acquired | (price as of 2026-10-05) |
| Jan. 2, 2025 | BTU | F | 2,276 | $20.86 | $47,477 | 63,518 Direct | -3.46% | Disposed | 20.5% (price as of 2026-10-05) |
| Dec. 4, 2024 | BTU | A | 84 | $23.08 | $1,939 | 65,794 Direct | +0.13% | Acquired | 8.9% (price as of 2026-10-05) |
| Nov. 6, 2024 | BTU | S | 10,000 | $29.52 | $295,200 | 65,710 Direct | -13.21% | Disposed | -14.9% (price as of 2026-10-05) |
| Sept. 4, 2024 | BTU | A | 88 | $22.03 | $1,939 | 75,710 Direct | +0.12% | Acquired | 14.1% (price as of 2026-10-05) |
| June 5, 2024 | BTU | A | 82 | $23.60 | $1,935 | 75,622 Direct | +0.11% | Acquired | 6.5% (price as of 2026-10-05) |
| March 13, 2024 | BTU | A | 76 | $25.15 | $1,911 | 75,540 Direct | +0.10% | Acquired | -0.1% (price as of 2026-10-05) |
| Feb. 23, 2024 | BTU | S 10b5-1 | 6,826 | $24.57 | $167,715 | 75,464 Direct | -8.30% | Disposed | 2.3% (price as of 2026-10-05) |
| Feb. 22, 2024 | BTU | F | 10,859 | $24.70 | $268,217 | 82,290 Direct | -11.66% | Disposed | 1.7% (price as of 2026-10-05) |
| Feb. 21, 2024 | BTU | A | 24,511 | · | · | 93,149 Direct | +35.71% | Acquired | (price as of 2026-10-05) |
| Jan. 9, 2024 | BTU | S 10b5-1 | 4,827 | $24.94 | $120,385 | 68,638 Direct | -6.57% | Disposed | 0.8% (price as of 2026-10-05) |
| Jan. 3, 2024 | BTU | F | 8,307 | $24.79 | $205,931 | 73,465 Direct | -10.16% | Disposed | 1.4% (price as of 2026-10-05) |
| Jan. 2, 2024 | BTU | A | 14,350 | · | · | 81,772 Direct | +21.28% | Acquired | (price as of 2026-10-05) |
| Nov. 29, 2023 | BTU | A | 92 | $23.79 | $2,189 | 67,422 Direct | +0.14% | Acquired | 5.6% (price as of 2026-10-05) |
| Aug. 30, 2023 | BTU | A | 99 | $21.91 | $2,169 | 67,330 Direct | +0.15% | Acquired | 14.7% (price as of 2026-10-05) |
| May 31, 2023 | BTU | A | 123 | $18.16 | $2,234 | 67,231 Direct | +0.18% | Acquired | 38.4% (price as of 2026-10-05) |
| Feb. 24, 2023 | BTU | S 10b5-1 | 21,070 | $25.88 | $545,292 | 67,108 Direct | -23.89% | Disposed | -2.9% (price as of 2026-10-05) |
| Feb. 22, 2023 | BTU | A | 75,655 | $26.19 | $1,981,404 | 121,694 Direct | +164.33% | Acquired | -4.0% (price as of 2026-10-05) |
| Feb. 22, 2023 | BTU | F | 33,516 | $26.19 | $877,784 | 88,178 Direct | -27.54% | Disposed | -4.0% (price as of 2026-10-05) |
| Jan. 5, 2023 | BTU | S 10b5-1 | 10,766 | $26.48 | $285,084 | 46,039 Direct | -18.95% | Disposed | -5.1% (price as of 2026-10-05) |
| Jan. 4, 2023 | BTU | F | 11,753 | $26.57 | $312,277 | 56,805 Direct | -17.14% | Disposed | -5.4% (price as of 2026-10-05) |
| Jan. 4, 2023 | BTU | S | 6,219 | $24.65 | $153,298 | 68,558 Direct | -8.32% | Disposed | 1.9% (price as of 2026-10-05) |
| Jan. 4, 2023 | BTU | S 10b5-1 | 6,219 | $24.65 | $153,298 | 63,578 Direct | -8.91% | Disposed | 1.9% (price as of 2026-10-05) |
| Jan. 3, 2023 | BTU | A | 16,932 | · | · | 74,777 Direct | +29.27% | Acquired | (price as of 2026-10-05) |
| Jan. 3, 2023 | BTU | F | 5,372 | $25.10 | $134,837 | 57,845 Direct | -8.50% | Disposed | 0.1% (price as of 2026-10-05) |
| Jan. 3, 2023 | BTU | A | 11,952 | · | · | 69,797 Direct | +20.66% | Acquired | (price as of 2026-10-05) |
| Jan. 2, 2023 | BTU | F | 3,490 | $26.42 | $92,206 | 70,173 Direct | -4.74% | Disposed | -4.9% (price as of 2026-10-05) |
| Jan. 2, 2023 | BTU | F | 2,134 | $26.42 | $56,380 | 68,039 Direct | -3.04% | Disposed | -4.9% (price as of 2026-10-05) |
| Jan. 2, 2023 | BTU | F | 4,822 | $26.42 | $127,397 | 63,217 Direct | -7.09% | Disposed | -4.9% (price as of 2026-10-05) |
| June 1, 2022 | BTU | S 10b5-1 | 12,742 | $24.31 | $309,758 | 73,663 Direct | -14.75% | Disposed | 3.4% (price as of 2026-10-05) |
| Feb. 23, 2022 | BTU | S 10b5-1 | 532 | $16.94 | $9,012 | 86,405 Direct | -0.61% | Disposed | 48.3% (price as of 2026-10-05) |
| Feb. 17, 2022 | BTU | A | 1,892 | $31.15 | $58,936 | 87,765 Direct | +2.20% | Acquired | -19.3% (price as of 2026-10-05) |
| Feb. 17, 2022 | BTU | F | 828 | $17.43 | $14,432 | 86,937 Direct | -0.94% | Disposed | 44.2% (price as of 2026-10-05) |
| Jan. 5, 2022 | BTU | S 10b5-1 | 12,212 | $11.75 | $143,491 | 85,873 Direct | -12.45% | Disposed | 113.9% (price as of 2026-10-05) |
| Jan. 4, 2022 | BTU | F | 11,839 | $11.24 | $133,070 | 98,085 Direct | -10.77% | Disposed | 123.6% (price as of 2026-10-05) |
| Jan. 3, 2022 | BTU | A | 24,250 | · | · | 109,924 Direct | +28.30% | Acquired | (price as of 2026-10-05) |
| Jan. 2, 2022 | BTU | F | 9,181 | $10.07 | $92,453 | 85,674 Direct | -9.68% | Disposed | 149.6% (price as of 2026-10-05) |
| Sept. 15, 2021 | BTU | S | 20,246 | $16.64 | $336,893 | 94,855 Direct | -17.59% | Disposed | 51.0% (price as of 2026-10-05) |
| July 1, 2021 | BTU | F | 4,926 | $8.19 | $40,344 | 115,101 Direct | -4.10% | Disposed | 206.8% (price as of 2026-10-05) |
| April 5, 2021 | BTU | S 10b5-1 | 132 | $3.06 | $404 | 120,027 Direct | -0.11% | Disposed | 721.2% (price as of 2026-10-05) |
| April 2, 2021 | BTU | F | 381 | $3.01 | $1,147 | 120,159 Direct | -0.32% | Disposed | 734.9% (price as of 2026-10-05) |
| Feb. 22, 2021 | BTU | S 10b5-1 | 194 | $3.90 | $757 | 120,540 Direct | -0.16% | Disposed | 544.4% (price as of 2026-10-05) |
| Feb. 18, 2021 | BTU | A | 2,009 | · | · | 121,448 Direct | +1.68% | Acquired | (price as of 2026-10-05) |
| Feb. 18, 2021 | BTU | F | 714 | $3.89 | $2,777 | 120,734 Direct | -0.59% | Disposed | 546.0% (price as of 2026-10-05) |
| Jan. 25, 2021 | BTU | S 10b5-1 | 466 | $3.31 | $1,542 | 119,439 Direct | -0.39% | Disposed | 659.2% (price as of 2026-10-05) |
| Jan. 22, 2021 | BTU | F | 1,716 | $3.38 | $5,800 | 119,905 Direct | -1.41% | Disposed | 643.5% (price as of 2026-10-05) |
| Jan. 5, 2021 | BTU | S 10b5-1 | 837 | $3.07 | $2,570 | 121,621 Direct | -0.68% | Disposed | 718.6% (price as of 2026-10-05) |
| Jan. 4, 2021 | BTU | A | 53,061 | · | · | 122,458 Direct | +76.46% | Acquired | (price as of 2026-10-05) |
| Jan. 2, 2021 | BTU | F | 3,078 | $2.41 | $7,418 | 69,397 Direct | -4.25% | Disposed | 942.7% (price as of 2026-10-05) |
| July 1, 2020 | BTU | A | 27,200 | · | · | 72,475 Direct | +60.08% | Acquired | (price as of 2026-10-05) |
| April 2, 2020 | BTU | F | 1,660 | $3.39 | $5,627 | 45,275 Direct | -3.54% | Disposed | 641.3% (price as of 2026-10-05) |
| Jan. 22, 2020 | BTU | A | 14,475 | · | · | 46,938 Direct | +44.59% | Acquired | (price as of 2026-10-05) |
| Jan. 19, 2018 | CDE | F | 11,895 | $8.33 | $99,085 | 81,376 Direct | -12.75% | Disposed | 105.2% (price as of 2026-10-05) |
| Jan. 19, 2018 | CDE | F | 2,661 | $8.33 | $22,166 | 93,271 Direct | -2.77% | Disposed | 105.2% (price as of 2026-10-05) |
| Jan. 18, 2018 | CDE | F | 4,262 | $8.33 | $35,502 | 95,932 Direct | -4.25% | Disposed | 105.2% (price as of 2026-10-05) |
| Nov. 3, 2017 | CDE | S | 15,000 | $7.42 | $111,300 | 100,194 Direct | -13.02% | Disposed | 130.3% (price as of 2026-10-05) |
| Sept. 15, 2017 | CDE | S | 9,500 | $9.25 | $87,875 | 115,194 Direct | -7.62% | Disposed | 84.8% (price as of 2026-10-05) |
| June 8, 2017 | CDE | M | 16,400 | · | · | 32,800 Direct | -33.33% | Disposed | (price as of 2026-10-05) |
| June 8, 2017 | CDE | S | 16,400 | $9.76 | $160,064 | 124,694 Direct | -11.62% | Disposed | 75.1% (price as of 2026-10-05) |
| June 8, 2017 | CDE | M | 16,400 | $1.81 | $29,684 | 141,094 Direct | +13.15% | Acquired | 844.2% (price as of 2026-10-05) |
| Jan. 20, 2017 | CDE | F | 12,578 | $11.41 | $143,515 | 124,694 Direct | -9.16% | Disposed | 49.8% (price as of 2026-10-05) |
| Jan. 18, 2017 | CDE | A | 25,773 | · | · | 137,272 Direct | +23.12% | Acquired | (price as of 2026-10-05) |
| Jan. 17, 2017 | CDE | F | 1,852 | $11.60 | $21,483 | 111,499 Direct | -1.63% | Disposed | 47.3% (price as of 2026-10-05) |
| Aug. 4, 2016 | CDE | S | 4,565 | $15.75 | $71,899 | 113,351 Direct | -3.87% | Disposed | 8.5% (price as of 2026-10-05) |
| May 20, 2016 | CDE | F | 2,087 | $7.94 | $16,571 | 117,916 Direct | -1.74% | Disposed | 115.2% (price as of 2026-10-05) |
| Jan. 20, 2016 | CDE | A | 49,200 | · | · | 49,200 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 20, 2016 | CDE | A | 116,279 | · | · | 116,279 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 20, 2016 | CDE | F | 2,184 | $1.81 | $3,953 | 120,003 Direct | -1.79% | Disposed | 844.2% (price as of 2026-10-05) |
| Jan. 20, 2016 | CDE | A | 78,625 | · | · | 122,187 Direct | +180.49% | Acquired | (price as of 2026-10-05) |
| Jan. 19, 2016 | CDE | F | 1,540 | $1.73 | $2,664 | 43,562 Direct | -3.41% | Disposed | 887.9% (price as of 2026-10-05) |
| May 21, 2015 | CDE | F | 2,087 | $5.51 | $11,499 | 45,102 Direct | -4.42% | Disposed | 210.2% (price as of 2026-10-05) |
| May 13, 2015 | CDE | A | 0 | · | · | 9,638 Direct | 0.00% | Acquired | (price as of 2026-10-05) |
| May 13, 2015 | CDE | A | 0 | · | · | 22,779 Direct | 0.00% | Acquired | (price as of 2026-10-05) |
| May 13, 2015 | CDE | A | 18,014 | · | · | 47,189 Direct | +61.74% | Acquired | (price as of 2026-10-05) |
| Jan. 17, 2015 | CDE | F | 1,607 | $5.94 | $9,546 | 29,175 Direct | -5.22% | Disposed | 187.7% (price as of 2026-10-05) |
| Jan. 17, 2015 | CDE | A | 0 | · | · | 22,779 Direct | 0.00% | Acquired | (price as of 2026-10-05) |
| Jan. 17, 2015 | CDE | A | 0 | · | · | 9,638 Direct | 0.00% | Acquired | (price as of 2026-10-05) |
| May 21, 2014 | CDE | A | 0 | · | · | 9,638 Direct | 0.00% | Acquired | (price as of 2026-10-05) |
| May 21, 2014 | CDE | A | 0 | · | · | 22,779 Direct | 0.00% | Acquired | (price as of 2026-10-05) |
| May 21, 2014 | CDE | F | 2,146 | $7.85 | $16,846 | 30,782 Direct | -6.52% | Disposed | 117.7% (price as of 2026-10-05) |
| Jan. 17, 2014 | CDE | A | 9,638 | · | · | 9,638 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 17, 2014 | CDE | A | 22,779 | · | · | 22,779 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 17, 2014 | CDE | A | 12,797 | · | · | 32,928 Direct | +63.57% | Acquired | (price as of 2026-10-05) |
| May 21, 2013 | CDE | A | 20,131 | · | · | 20,131 Direct | · | Acquired | (price as of 2026-10-05) |
| May 21, 2013 | CDE | A | 12,796 | · | · | 12,796 Direct | · | Acquired | (price as of 2026-10-05) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| June 8, 2017 | CDE | Non-qualified Stock Options (right to buy) | Common Stock | $1.81 | Jan. 20, 2026 | 16,400 | Disposed |
| Jan. 20, 2016 | CDE | Non-qualified Stock Options (right to buy) | Common Stock | $1.81 | Jan. 20, 2026 | 49,200 | Acquired |
| Jan. 20, 2016 | CDE | Incentive Stock Options (right to buy) | Common Stock | $1.81 | Jan. 20, 2026 | 116,279 | Acquired |
| May 13, 2015 | CDE | Non-qualified Stock Options (right to buy) | Common Stock | $11.12 | Jan. 17, 2024 | 0 | Acquired |
| May 13, 2015 | CDE | Incentive Stock Options (right to buy) | Common Stock | $11.12 | Jan. 17, 2024 | 0 | Acquired |
| Jan. 17, 2015 | CDE | Incentive Stock Options (right to buy) | Common Stock | $11.12 | Jan. 17, 2024 | 0 | Acquired |
| Jan. 17, 2015 | CDE | Non-qualified Stock Options (right to buy) | Common Stock | $11.12 | Jan. 17, 2024 | 0 | Acquired |
| May 21, 2014 | CDE | Non-qualified Stock Options (right to buy) | Common Stock | $11.12 | Jan. 17, 2024 | 0 | Acquired |
| May 21, 2014 | CDE | Incentive Stock Options (right to buy) | Common Stock | $11.12 | Jan. 17, 2024 | 0 | Acquired |
| Jan. 17, 2014 | CDE | Non-qualified Stock Options (right to buy) | Common Stock | $11.12 | Jan. 17, 2024 | 9,638 | Acquired |
| Jan. 17, 2014 | CDE | Incentive Stock Options (right to buy) | Common Stock | $11.12 | Jan. 17, 2024 | 22,779 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Jan. 14, 2020 | BTU | Common Stock | · | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $687,500 | $258,334 | · | · | $898,669 | · | $64,961 | $3,690,064 |
| 2024 | $642,000 | $279,167 | · | · | $749,591 | · | $60,641 | $2,861,175 |
| 2023 | $613,500 | $265,700 | · | · | $996,470 | · | $50,177 | $2,775,833 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.