Joseph C. Cook III, Director at CASTLE BIOSCIENCES INC (CSTL), sold 278,260 shares at $66.76 ($18.5M) on 2020-12-16, disclosed to the SEC on 2020-12-18.
Open-market sale of $18.5M CSTL by Director. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $65.23 | 18,837 | $1.2M | 6.7% |
| 2 | $65.23 | 18,837 | $1.2M | 6.7% |
| 3 | $65.24 | 1,400 | $91K | 0.5% |
| 4 | $65.27 | 4,966 | $324K | 1.8% |
| 5 | $65.27 | 4,966 | $324K | 1.8% |
| 6 | $65.36 | 2,100 |
| $137K |
| 0.7% |
| 7 | $65.97 | 12,271 | $810K | 4.4% |
| 8 | $65.97 | 12,271 | $810K | 4.4% |
| 9 | $66.05 | 57,240 | $3.8M | 20.5% |
| 10 | $66.18 | 8,875 | $587K | 3.2% |
| 11 | $66.18 | 8,875 | $587K | 3.2% |
| 12 | $66.22 | 10,102 | $669K | 3.6% |
| 13 | $66.22 | 10,102 | $669K | 3.6% |
| 14 | $66.76 | 2,163 | $144K | 0.8% |
| 15 | $66.76 | 2,163 | $144K | 0.8% |
| 16 | $66.98 | 30,218 | $2.0M | 11.0% |
| 17 | $66.98 | 30,218 | $2.0M | 11.0% |
| 18 | $67.02 | 3,461 | $232K | 1.3% |
| 19 | $67.02 | 3,461 | $232K | 1.3% |
| 20 | $67.20 | 3,762 | $253K | 1.4% |
| 21 | $67.20 | 3,762 | $253K | 1.4% |
| 22 | $67.59 | 100 | $7K | 0.0% |
| 23 | $67.66 | 600 | $41K | 0.2% |
| 24 | $67.67 | 13,705 | $927K | 5.0% |
| 25 | $67.67 | 13,705 | $927K | 5.0% |
| 26 | $67.88 | 100 | $7K | 0.0% |
| Total | $66.35 avg | 278,260 | $18.5M | 100% |
| Filing → |
| CSTL | SELL | 2020-12-09 | $4.7M | — | Filing → |
| CSTL | SELL | 2020-10-14 | $5.3M | — | Filing → |
| CSTL | SELL | 2020-09-11 | $564K | — | Filing → |