CASTLE BIOSCIENCES INC — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 472 | $74.65 | $35,235 | 161,380 | Sep 14, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 133 | $70.47 | $9,373 | 151,566 | Sep 13, 2021 |
| BRADBURY DANIEL | — | Sale | 1,250 | $76.89 | $96,113 | 146,531 | Sep 9, 2021 |
| Spiess Bernhard E. | Chief Business Officer | Sale | 8,038 | $75.24 | $604,779 | 20,925 | Sep 2, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 900 | $76.86 | $69,174 | 346,018 | Aug 31, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 66 | $74.65 | $4,927 | 144,795 | Aug 27, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 2,500 | $70.57 | $176,425 | 156,699 | Aug 23, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 466 | $58.26 | $27,149 | 172,168 | Aug 17, 2021 |
| BRADBURY DANIEL | — | Sale | 2,339 | $61.46 | $143,755 | 147,781 | Aug 17, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 7,475 | $64.73 | $483,857 | 398,543 | Aug 13, 2021 |
| BRADBURY DANIEL | — | Sale | 1,100 | $70.66 | $77,726 | 276,393 | Aug 3, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 1,340 | $70.35 | $94,269 | 151,461 | Aug 3, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 456 | $70.26 | $32,039 | 175,640 | Jul 30, 2021 |
| BRADBURY DANIEL | — | Sale | 1,250 | $63.16 | $78,950 | 152,804 | Jul 26, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 500 | $68.68 | $34,340 | 176,800 | Jul 21, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 834 | $64.59 | $53,868 | 165,866 | Jul 20, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 4,700 | $72.66 | $341,502 | 439,118 | Jul 9, 2021 |
| BRADBURY DANIEL | — | Sale | 600 | $70.37 | $42,222 | 287,893 | Jul 9, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 600 | $66.62 | $39,972 | 455,418 | Jul 7, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 7,900 | $74.79 | $590,841 | 468,118 | Jun 24, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 8,190 | $74.90 | $613,431 | 477,828 | Jun 22, 2021 |
| KABAKOFF DAVID S | — | Sale | 30,000 | $75.07 | $2,252,100 | 503,577 | Jun 17, 2021 |
| Juvenal Tobin W | Chief Commercial Officer | Option Exercise | 4,737 | $2.39 | $11,321 | 12,827 | Jun 17, 2021 |
| Stokes Frank | Chief Financial Officer | Option Exercise | 2,127 | $2.39 | $5,084 | 8,047 | Jun 15, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 4,198 | $70.84 | $297,386 | 498,518 | Jun 10, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 2,384 | $72.84 | $173,651 | 506,418 | Jun 8, 2021 |
| Spiess Bernhard E. | Chief Business Officer | Option Exercise | 8,989 | $1.92 | $17,259 | 22,551 | Jun 8, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 838 | $59.81 | $50,121 | 526,018 | Jun 1, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 4,648 | $61.27 | $284,783 | 528,456 | May 27, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 585 | $59.97 | $35,082 | 543,002 | May 26, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 1,300 | $60.47 | $78,611 | 554,619 | May 20, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 100 | $60.09 | $6,009 | 555,919 | May 18, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 600 | $51.64 | $30,984 | 556,319 | May 13, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 2,533 | $51.94 | $131,564 | 560,152 | May 12, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 8,166 | $68.72 | $561,168 | 568,460 | Apr 28, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 1,993 | $69.30 | $138,115 | 600,548 | Apr 26, 2021 |
| BRADBURY DANIEL | — | Sale | 2,769 | $65.55 | $181,508 | 290,993 | Apr 21, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 6,019 | $68.74 | $413,746 | 609,640 | Apr 15, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 1,200 | $69.41 | $83,292 | 637,888 | Apr 14, 2021 |
| BRADBURY DANIEL | — | Sale | 3,500 | $70.62 | $247,170 | 309,993 | Apr 6, 2021 |
| KABAKOFF DAVID S | — | Sale | 40,000 | $73.99 | $2,959,600 | 533,577 | Apr 5, 2021 |
| KABAKOFF DAVID S | — | Sale | 40,000 | $70.00 | $2,800,000 | 663,577 | Mar 31, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 4,114 | $60.99 | $250,913 | 661,700 | Mar 30, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 4,975 | $59.46 | $295,814 | 690,410 | Mar 29, 2021 |
| BRADBURY DANIEL | — | Sale | 3,080 | $63.71 | $196,227 | 329,703 | Mar 25, 2021 |
| KABAKOFF DAVID S | — | Sale | 10,000 | $67.12 | $671,200 | 733,577 | Mar 19, 2021 |
| Cook Joseph C. III | — | Option Exercise | 12,229 | $16.00 | $195,664 | 124,407 | Mar 18, 2021 |
| KABAKOFF DAVID S | — | Sale | 30,000 | $61.21 | $1,836,300 | 853,577 | Mar 17, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 59 | $67.03 | $3,955 | 695,385 | Mar 12, 2021 |
| MAETZOLD DEREK J | Pres. & Chief Exec. Officer | Sale | 9,394 | $67.78 | $636,725 | 710,560 | Mar 10, 2021 |