Senior insider sale
Pres. & Chief Exec. Officer at CASTLE BIOSCIENCES INC — senior position signals high conviction
$3.34M
124.44K shares
MAETZOLD DEREK J plans to sell 124.44K shares of CASTLE BIOSCIENCES INC valued at approximately $3.34M. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.
Acquired as compensation -- Stock Options
Compensation -- Cashless exercise / same-day sale
Acquired as gift
None
Acquired as gift
None
Acquired as gift
None
Acquired as gift
None
Acquired as gift
None
Acquired as gift
None
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
11/12/2018 | Acquired as compensation -- Stock Options Compensation -- Cashless exercise / same-day sale | 7.31K | — |
10/29/2007 | Acquired as gift None | 4.07K | Gift |
10/29/2007 | Acquired as gift None | 3.46K | Gift |
10/29/2007 | Acquired as gift None | 834.00 | Gift |
10/29/2007 | Acquired as gift None | 834.00 | Gift |
10/29/2007 | Acquired as gift None | 834.00 | Gift |
10/29/2007 | Acquired as gift None | 834.00 | Gift |
| Total | 18.18K | ||
Completed
Units to sell
650.00
Market value
$16.5K
Units to sell
18.65K
Market value
$482.4K
Units to sell
17.57K
Market value
$455.4K
Units to sell
13.20K
Market value
$335.2K
Units to sell
23.18K
Market value
$584.5K
Units to sell
498.00
Market value
$13.1K
Units to sell
116.00
Market value
$3.0K
Units to sell
736.00
Market value
$19.3K
Units to sell
116.00
Market value
$3.0K
Units to sell
5.68K
Market value
$147.0K
Units to sell
662.00
Market value
$17.3K
Units to sell
163.00
Market value
$4.3K
Units to sell
83.00
Market value
$2.2K
Units to sell
5.41K
Market value
$140.1K
Units to sell
621.00
Market value
$16.3K
Units to sell
3.59K
Market value
$93.9K
Units to sell
2.64K
Market value
$69.3K
Units to sell
113.00
Market value
$3.0K
Units to sell
163.00
Market value
$4.3K
Units to sell
166.00
Market value
$4.3K
Units to sell
199.00
Market value
$5.2K
Units to sell
817.00
Market value
$31.0K
Units to sell
1.34K
Market value
$53.3K
Units to sell
522.00
Market value
$20.9K
Units to sell
1.34K
Market value
$53.3K
Units to sell
1.34K
Market value
$53.4K
Units to sell
1.34K
Market value
$53.5K
Units to sell
1.34K
Market value
$53.6K
Units to sell
1.34K
Market value
$53.6K
Units to sell
1.34K
Market value
$50.9K
Units to sell
1.34K
Market value
$50.9K
Planned — Approximate Date
Units to sell
18.18K
Market value
$449.0K
Units
124.44K
Value
$3.34M
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| Completed | ||||
3/18/2026 | 650.00 | $16.5K | — | Completed |
3/17/2026 | 18.65K | $482.4K | — | Completed |
3/16/2026 | 17.57K | $455.4K | — | Completed |
3/13/2026 | 13.20K | $335.2K | — | Completed |
3/12/2026 | 23.18K | $584.5K | — | Completed |
3/11/2026 | 498.00 | $13.1K | — | Completed |
3/11/2026 | 116.00 | $3.0K | — | Completed |
3/11/2026 | 736.00 | $19.3K | — | Completed |
3/11/2026 | 116.00 | $3.0K | — | Completed |
3/11/2026 | 5.68K | $147.0K | — | Completed |
3/11/2026 | 662.00 | $17.3K | — | Completed |
3/11/2026 | 163.00 | $4.3K | — | Completed |
3/11/2026 | 83.00 | $2.2K | — | Completed |
3/11/2026 | 5.41K | $140.1K | — | Completed |
3/11/2026 | 621.00 | $16.3K | — | Completed |
3/11/2026 | 3.59K | $93.9K | — | Completed |
3/11/2026 | 2.64K | $69.3K | — | Completed |
3/11/2026 | 113.00 | $3.0K | — | Completed |
3/11/2026 | 163.00 | $4.3K | — | Completed |
3/11/2026 | 166.00 | $4.3K | — | Completed |
3/11/2026 | 199.00 | $5.2K | — | Completed |
2/4/2026 | 817.00 | $31.0K | — | Completed |
2/3/2026 | 1.34K | $53.3K | — | Completed |
2/3/2026 | 522.00 | $20.9K | — | Completed |
2/3/2026 | 1.34K | $53.3K | — | Completed |
1/20/2026 | 1.34K | $53.4K | — | Completed |
1/20/2026 | 1.34K | $53.5K | — | Completed |
1/20/2026 | 1.34K | $53.6K | — | Completed |
1/6/2026 | 1.34K | $53.6K | — | Completed |
1/5/2026 | 1.34K | $50.9K | — | Completed |
1/5/2026 | 1.34K | $50.9K | — | Completed |
| Planned — Approximate Date | ||||
3/26/2026 | 18.18K | $449.0K | NASD | Planned |
| Total | 124.44K | $3.34M | ||