Insider trading activities (stock purchases, sales, and option exercises)
reported by insiders of Castle Biosciences Inc (CSTL)
since 2019 are shown in Table 1 and Table 2.
Table 1 shows the monthly insider trading data of Castle Biosciences Inc.
Table 2 shows the detailed insider transactions.
This company's CIK number is 1447362.
Total stock buying since 2019: $12,499,089.
Total stock sales since 2019: $334,093,908.
Total stock option exercises since 2019: $1,069,086.
Table 3. Detailed insider trading at Castle Biosciences Inc (CSTL)
| Trade Date |
Insider Name |
Trade Type |
Shares |
Price ($) |
Value ($) |
| 2025-09-02 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 1,339 | 23.93 | 32,042 |
| 2025-08-27 | Oelschlager Kristen M (Chief Operating Officer) | Sale | 30,684 | 21.85 | 669,705 |
| 2025-08-15 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 1,339 | 20.04 | 26,833 |
| 2025-08-13 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 43,019 | 19.50 | 839,042 |
| 2025-08-08 | Oelschlager Kristen M (Chief Operating Officer) | Option Ex | 10,640 | .00 | 0 |
| 2025-08-08 | Juvenal Tobin W (Chief Commercial Officer) | Option Ex | 10,640 | .00 | 0 |
| 2025-08-08 | Stokes Frank (Chief Financial Officer) | Option Ex | 9,744 | .00 | 0 |
| 2025-08-08 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Option Ex | 66,991 | .00 | 0 |
| 2025-06-27 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 22,576 | 20.30 | 458,292 |
| 2025-05-21 | Cotton Rodney (Director) | Option Ex | 8,673 | .00 | 0 |
| 2025-05-21 | Caple Kim (Director) | Option Ex | 8,673 | .00 | 0 |
| 2025-05-21 | Harrison Miles (Director) | Option Ex | 8,673 | .00 | 0 |
| 2025-05-21 | Olson Tiffany (Director) | Option Ex | 8,673 | .00 | 0 |
| 2025-05-21 | Cole G Bradley (Director) | Option Ex | 8,673 | .00 | 0 |
| 2025-05-21 | Bradbury Daniel (Director) | Option Ex | 8,673 | .00 | 0 |
| 2025-04-21 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 5,644 | 21.52 | 121,447 |
| 2025-04-09 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 4,670 | 20.22 | 94,422 |
| 2025-04-08 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 974 | 20.03 | 19,509 |
| 2025-03-26 | Cotton Rodney (Director) | Option Ex | 5,329 | .00 | 0 |
| 2025-03-26 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 5,644 | 20.30 | 114,573 |
| 2025-03-10 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 2,130 | 19.52 | 41,573 |
| 2025-03-07 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 27,047 | 20.40 | 551,704 |
| 2025-03-04 | Oelschlager Kristen M (Chief Operating Officer) | Option Ex | 13,811 | .00 | 0 |
| 2025-03-04 | Juvenal Tobin W (Chief Commercial Officer) | Option Ex | 13,811 | .00 | 0 |
| 2025-03-04 | Stokes Frank (Chief Financial Officer) | Option Ex | 12,186 | .00 | 0 |
| 2025-03-04 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 5,687 | 20.86 | 118,619 |
| 2025-03-04 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Option Ex | 31,109 | .00 | 0 |
| 2025-02-20 | Stokes Frank (Chief Financial Officer) | Sale | 8,046 | 26.70 | 214,828 |
| 2025-02-05 | Bradbury Daniel (Director) | Sale | 7,867 | 28.17 | 221,636 |
| 2025-01-07 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 631 | 30.14 | 19,017 |
| 2025-01-06 | Juvenal Tobin W (Chief Commercial Officer) | Sale | 2,230 | 30.00 | 66,900 |
| 2025-01-06 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 7,058 | 29.24 | 206,390 |
| 2025-01-06 | Bradbury Daniel (Director) | Sale | 7,867 | 29.21 | 229,771 |
| 2024-12-17 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 9,364 | 28.55 | 267,304 |
| 2024-12-16 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 11,059 | 28.83 | 318,864 |
| 2024-12-13 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 15,064 | 28.82 | 434,069 |
| 2024-12-10 | Oelschlager Kristen M (Chief Operating Officer) | Option Ex | 7,919 | .00 | 0 |
| 2024-12-10 | Juvenal Tobin W (Chief Commercial Officer) | Option Ex | 7,919 | .00 | 0 |
| 2024-12-10 | Stokes Frank (Chief Financial Officer) | Option Ex | 8,169 | .00 | 0 |
| 2024-12-10 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Option Ex | 20,787 | .00 | 0 |
| 2024-12-09 | Oelschlager Kristen M (Chief Operating Officer) | Option Ex | 15,961 | .00 | 0 |
| 2024-12-09 | Juvenal Tobin W (Chief Commercial Officer) | Option Ex | 15,961 | .00 | 0 |
| 2024-12-09 | Stokes Frank (Chief Financial Officer) | Option Ex | 14,617 | .00 | 0 |
| 2024-12-09 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Option Ex | 33,496 | .00 | 0 |
| 2024-12-05 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 5,127 | 31.35 | 160,741 |
| 2024-11-12 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 5,127 | 34.15 | 175,087 |
| 2024-11-05 | Juvenal Tobin W (Chief Commercial Officer) | Sale | 3,507 | 35.56 | 124,708 |
| 2024-11-05 | Juvenal Tobin W (Chief Commercial Officer) | Option Ex | 3,507 | 3.38 | 11,853 |
| 2024-11-04 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 5,127 | 32.84 | 168,375 |
| 2024-11-01 | Juvenal Tobin W (Chief Commercial Officer) | Sale | 3,100 | 35.39 | 109,709 |
| 2024-11-01 | Juvenal Tobin W (Chief Commercial Officer) | Option Ex | 1,100 | 3.38 | 3,718 |
| 2024-11-01 | Bradbury Daniel (Director) | Sale | 7,867 | 34.72 | 273,118 |
| 2024-10-14 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 5,127 | 32.27 | 165,463 |
| 2024-10-08 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 2,562 | 30.27 | 77,549 |
| 2024-10-07 | Bradbury Daniel (Director) | Sale | 7,867 | 29.44 | 231,628 |
| 2024-10-04 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 2,565 | 28.73 | 73,702 |
| 2024-09-16 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 5,127 | 30.97 | 158,793 |
| 2024-09-11 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 2,616 | 30.32 | 79,317 |
| 2024-09-09 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 2,586 | 29.46 | 76,175 |
| 2024-09-05 | Bradbury Daniel (Director) | Sale | 7,867 | 29.02 | 228,331 |
| 2024-09-03 | Oelschlager Kristen M (Chief Operating Officer) | Sale | 5,832 | 29.48 | 171,950 |
| 2024-08-30 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 861 | 30.10 | 25,915 |
| 2024-08-29 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 3,580 | 30.07 | 107,668 |
| 2024-08-12 | Bradbury Daniel (Director) | Sale | 7,883 | 26.65 | 210,058 |
| 2024-08-07 | Stokes Frank (Chief Financial Officer) | Sale | 10,000 | 25.66 | 256,630 |
| 2024-08-01 | Oelschlager Kristen M (Chief Operating Officer) | Sale | 12,989 | 23.24 | 301,903 |
| 2024-07-29 | Oelschlager Kristen M (Chief Operating Officer) | Sale | 2,793 | 22.06 | 61,621 |
| 2024-07-14 | Caple Kim (Director) | Option Ex | 440 | .00 | 0 |
| 2024-07-14 | Goldberg Ellen (Director) | Option Ex | 440 | .00 | 0 |
| 2024-07-01 | Oelschlager Kristen M (Chief Operating Officer) | Sale | 2,793 | 21.22 | 59,278 |
| 2024-07-01 | Olson Tiffany (Director) | Option Ex | 830 | .00 | 0 |
| 2024-06-03 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 6,336 | 23.68 | 150,068 |
| 2024-05-25 | Caple Kim (Director) | Option Ex | 8,636 | .00 | 0 |
| 2024-05-25 | Goldberg Ellen (Director) | Option Ex | 8,636 | .00 | 0 |
| 2024-05-25 | Harrison Miles (Director) | Option Ex | 8,636 | .00 | 0 |
| 2024-05-25 | Olson Tiffany (Director) | Option Ex | 8,636 | .00 | 0 |
| 2024-05-25 | Cole G Bradley (Director) | Option Ex | 8,636 | .00 | 0 |
| 2024-05-25 | Bradbury Daniel (Director) | Option Ex | 8,636 | .00 | 0 |
| 2024-05-23 | Aspinall Mara G. (Director) | Option Ex | 8,636 | .00 | 0 |
| 2024-05-14 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 6,336 | 24.56 | 155,624 |
| 2024-05-10 | Olson Tiffany (Director) | Option Ex | 487 | .00 | 0 |
| 2024-05-06 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 6,336 | 24.72 | 156,625 |
| 2024-05-06 | Bradbury Daniel (Director) | Sale | 23,323 | 24.64 | 574,678 |
| 2024-04-23 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 1,126 | 20.11 | 22,642 |
| 2024-04-12 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 5,210 | 20.35 | 106,023 |
| 2024-04-08 | Bradbury Daniel (Director) | Sale | 2,400 | 20.45 | 49,087 |
| 2024-04-05 | Bradbury Daniel (Director) | Sale | 11,771 | 20.86 | 245,543 |
| 2024-04-04 | Bradbury Daniel (Director) | Sale | 9,152 | 21.45 | 196,310 |
| 2024-04-03 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 6,336 | 21.70 | 137,491 |
| 2024-03-21 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 194 | 20.70 | 4,015 |
| 2024-03-20 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 6,142 | 20.27 | 124,498 |
| 2024-03-05 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 4,131 | 21.41 | 88,461 |
| 2024-03-05 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Option Ex | 10,686 | 3.72 | 39,751 |
| 2024-03-04 | Bradbury Daniel (Director) | Sale | 23,323 | 20.86 | 486,517 |
| 2024-02-07 | Bradbury Daniel (Director) | Sale | 2,074 | 23.20 | 48,116 |
| 2024-02-06 | Bradbury Daniel (Director) | Sale | 9,847 | 23.63 | 232,684 |
| 2024-02-05 | Bradbury Daniel (Director) | Sale | 11,402 | 23.08 | 263,158 |
| 2024-01-05 | Bradbury Daniel (Director) | Sale | 5,100 | 20.36 | 103,836 |
| 2024-01-04 | Bradbury Daniel (Director) | Sale | 18,223 | 20.40 | 371,749 |
| 2023-12-29 | Oelschlager Kristen M (Chief Operating Officer) | Option Ex | 12,615 | 2.71 | 34,186 |
| 2023-12-28 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 4,511 | 22.17 | 100,008 |
| 2023-12-27 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 9,213 | 21.90 | 201,764 |
| 2023-12-26 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 5,909 | 21.93 | 129,584 |
| 2023-12-22 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 5,960 | 21.96 | 130,881 |
| 2023-12-21 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 12,548 | 21.40 | 268,564 |
| 2023-12-20 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 5,934 | 21.05 | 124,881 |
| 2023-12-19 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 9,033 | 20.84 | 188,211 |
| 2023-12-18 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 7,218 | 20.27 | 146,330 |
| 2023-12-15 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 4,822 | 20.21 | 97,452 |
| 2023-12-14 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 19,128 | 21.28 | 407,043 |
| 2023-12-13 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 7,632 | 20.21 | 154,242 |
| 2023-12-13 | Bradbury Daniel (Director) | Sale | 1,168 | 20.04 | 23,406 |
| 2023-12-12 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 800 | 20.01 | 16,008 |
| 2023-12-12 | Bradbury Daniel (Director) | Sale | 1,200 | 20.01 | 24,012 |
| 2023-12-10 | Oelschlager Kristen M (Chief Operating Officer) | Option Ex | 7,920 | .00 | 0 |
| 2023-12-10 | Juvenal Tobin W (Chief Commercial Officer) | Option Ex | 7,920 | .00 | 0 |
| 2023-12-10 | Stokes Frank (Chief Financial Officer) | Option Ex | 8,170 | .00 | 0 |
| 2023-12-10 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Option Ex | 20,787 | .00 | 0 |
| 2023-12-09 | Oelschlager Kristen M (Chief Operating Officer) | Option Ex | 15,961 | .00 | 0 |
| 2023-12-09 | Juvenal Tobin W (Chief Commercial Officer) | Option Ex | 15,961 | .00 | 0 |
| 2023-12-09 | Stokes Frank (Chief Financial Officer) | Option Ex | 14,617 | .00 | 0 |
| 2023-12-09 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Option Ex | 33,496 | .00 | 0 |
| 2023-12-08 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 4,852 | 20.10 | 97,525 |
| 2023-12-08 | Bradbury Daniel (Director) | Sale | 6,875 | 20.09 | 138,118 |
| 2023-12-06 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 100 | 20.02 | 2,002 |
| 2023-12-06 | Bradbury Daniel (Director) | Sale | 200 | 20.02 | 4,004 |
| 2023-12-04 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 2,883 | 20.08 | 57,890 |
| 2023-12-04 | Bradbury Daniel (Director) | Sale | 4,340 | 20.08 | 87,164 |
| 2023-12-01 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 6,761 | 20.06 | 135,625 |
| 2023-12-01 | Bradbury Daniel (Director) | Sale | 9,545 | 20.05 | 191,424 |
| 2023-11-30 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 9,425 | 20.07 | 189,159 |
| 2023-11-30 | Bradbury Daniel (Director) | Sale | 12,179 | 20.08 | 244,566 |
| 2023-11-29 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 12,004 | 20.13 | 241,640 |
| 2023-11-29 | Bradbury Daniel (Director) | Sale | 17,342 | 20.12 | 349,007 |
| 2023-11-24 | Bradbury Daniel (Director) | Sale | 800 | 20.02 | 16,016 |
| 2023-11-21 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 1,584 | 20.01 | 31,695 |
| 2023-11-21 | Bradbury Daniel (Director) | Sale | 300 | 20.00 | 6,000 |
| 2023-11-20 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 4,026 | 20.04 | 80,681 |
| 2023-11-20 | Bradbury Daniel (Director) | Sale | 5,755 | 20.04 | 115,330 |
| 2023-09-01 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 1,500 | 20.05 | 30,078 |
| 2023-09-01 | Bradbury Daniel (Director) | Sale | 1,802 | 20.04 | 36,112 |
| 2023-08-31 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 8,555 | 20.06 | 171,596 |
| 2023-08-31 | Bradbury Daniel (Director) | Sale | 7,286 | 20.05 | 146,106 |
| 2023-08-30 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 3,400 | 20.03 | 68,112 |
| 2023-08-30 | Bradbury Daniel (Director) | Sale | 4,632 | 20.03 | 92,778 |
| 2023-08-03 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 600 | 20.10 | 12,060 |
| 2023-07-14 | Caple Kim (Director) | Option Ex | 440 | .00 | 0 |
| 2023-07-14 | Goldberg Ellen (Director) | Option Ex | 440 | .00 | 0 |
| 2023-07-07 | Maetzold Derek J (Pres. & Chief Exec. Officer) | Sale | 25,116 | 20.04 | 503,425 |
| 2023-07-07 | Bradbury Daniel (Director) | Sale | 50,000 | 20.39 | 1,019,500 |
Insider trading activities including stock purchases, stock sales, and option exercises
of CSTL listed in the above tables cannot be completely guaranteed as to their accuracy.
For more insider trading information of Castle Biosciences Inc (symbol CSTL,
CIK number 1447362) see
the Securities and Exchange Commission (SEC) website.