Senior insider sale
Pres. & Chief Exec. Officer at CASTLE BIOSCIENCES INC — senior position signals high conviction
$3.06M
119.52K shares
MAETZOLD DEREK J plans to sell 119.52K shares of CASTLE BIOSCIENCES INC valued at approximately $3.06M. 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
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
5/10/2018 | Acquired as compensation -- Stock Options Compensation -- Cashless exercise / same-day sale | 40.05K | — |
10/29/2007 | Acquired as gift None | 12.69K | Gift |
10/29/2007 | Acquired as gift None | 14.93K | Gift |
| Total | 67.66K | ||
Completed
Units to sell
1.15K
Market value
$27.8K
Units to sell
1.36K
Market value
$32.7K
Units to sell
278.00
Market value
$6.7K
Units to sell
6.21K
Market value
$149.8K
Units to sell
278.00
Market value
$6.7K
Units to sell
278.00
Market value
$6.7K
Units to sell
278.00
Market value
$6.7K
Units to sell
1.15K
Market value
$26.4K
Units to sell
278.00
Market value
$6.4K
Units to sell
278.00
Market value
$6.4K
Units to sell
1.36K
Market value
$31.0K
Units to sell
278.00
Market value
$6.4K
Units to sell
550.00
Market value
$12.6K
Units to sell
278.00
Market value
$6.4K
Units to sell
1.15K
Market value
$27.9K
Units to sell
278.00
Market value
$6.7K
Units to sell
278.00
Market value
$6.7K
Units to sell
278.00
Market value
$6.7K
Units to sell
1.36K
Market value
$32.9K
Units to sell
278.00
Market value
$6.7K
Units to sell
6.21K
Market value
$150.5K
Units to sell
278.00
Market value
$5.7K
Units to sell
1.15K
Market value
$23.7K
Units to sell
278.00
Market value
$5.7K
Units to sell
278.00
Market value
$5.7K
Units to sell
1.36K
Market value
$28.0K
Units to sell
550.00
Market value
$11.3K
Units to sell
278.00
Market value
$5.7K
Units to sell
6.21K
Market value
$129.2K
Units to sell
1.36K
Market value
$28.2K
Units to sell
1.15K
Market value
$24.0K
Units to sell
278.00
Market value
$5.8K
Units to sell
278.00
Market value
$5.8K
Units to sell
278.00
Market value
$5.8K
Units to sell
278.00
Market value
$5.8K
Units to sell
212.00
Market value
$4.3K
Units to sell
212.00
Market value
$4.3K
Units to sell
1.03K
Market value
$20.8K
Units to sell
212.00
Market value
$4.3K
Units to sell
880.00
Market value
$17.7K
Units to sell
212.00
Market value
$4.3K
Units to sell
420.00
Market value
$8.5K
Units to sell
66.00
Market value
$1.3K
Units to sell
322.00
Market value
$6.4K
Units to sell
130.00
Market value
$2.6K
Units to sell
66.00
Market value
$1.3K
Units to sell
66.00
Market value
$1.3K
Units to sell
273.00
Market value
$5.4K
Units to sell
66.00
Market value
$1.3K
Units to sell
1.15K
Market value
$25.5K
Units to sell
278.00
Market value
$6.1K
Units to sell
1.36K
Market value
$30.0K
Units to sell
278.00
Market value
$6.1K
Units to sell
6.21K
Market value
$137.3K
Units to sell
278.00
Market value
$6.1K
Units to sell
278.00
Market value
$6.1K
Planned — Approximate Date
Units to sell
67.66K
Market value
$1.89M
Units
119.52K
Value
$3.06M
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| Completed | ||||
7/27/2026 | 1.15K | $27.8K | — | Completed |
7/27/2026 | 1.36K | $32.7K | — | Completed |
7/27/2026 | 278.00 | $6.7K | — | Completed |
7/27/2026 | 6.21K | $149.8K | — | Completed |
7/27/2026 | 278.00 | $6.7K | — | Completed |
7/27/2026 | 278.00 | $6.7K | — | Completed |
7/27/2026 | 278.00 | $6.7K | — | Completed |
7/14/2026 | 1.15K | $26.4K | — | Completed |
7/14/2026 | 278.00 | $6.4K | — | Completed |
7/14/2026 | 278.00 | $6.4K | — | Completed |
7/14/2026 | 1.36K | $31.0K | — | Completed |
7/14/2026 | 278.00 | $6.4K | — | Completed |
7/14/2026 | 550.00 | $12.6K | — | Completed |
7/14/2026 | 278.00 | $6.4K | — | Completed |
7/1/2026 | 1.15K | $27.9K | — | Completed |
7/1/2026 | 278.00 | $6.7K | — | Completed |
7/1/2026 | 278.00 | $6.7K | — | Completed |
7/1/2026 | 278.00 | $6.7K | — | Completed |
7/1/2026 | 1.36K | $32.9K | — | Completed |
7/1/2026 | 278.00 | $6.7K | — | Completed |
7/1/2026 | 6.21K | $150.5K | — | Completed |
6/15/2026 | 278.00 | $5.7K | — | Completed |
6/15/2026 | 1.15K | $23.7K | — | Completed |
6/15/2026 | 278.00 | $5.7K | — | Completed |
6/15/2026 | 278.00 | $5.7K | — | Completed |
6/15/2026 | 1.36K | $28.0K | — | Completed |
6/15/2026 | 550.00 | $11.3K | — | Completed |
6/15/2026 | 278.00 | $5.7K | — | Completed |
6/1/2026 | 6.21K | $129.2K | — | Completed |
6/1/2026 | 1.36K | $28.2K | — | Completed |
6/1/2026 | 1.15K | $24.0K | — | Completed |
6/1/2026 | 278.00 | $5.8K | — | Completed |
6/1/2026 | 278.00 | $5.8K | — | Completed |
6/1/2026 | 278.00 | $5.8K | — | Completed |
6/1/2026 | 278.00 | $5.8K | — | Completed |
5/21/2026 | 212.00 | $4.3K | — | Completed |
5/21/2026 | 212.00 | $4.3K | — | Completed |
5/21/2026 | 1.03K | $20.8K | — | Completed |
5/21/2026 | 212.00 | $4.3K | — | Completed |
5/21/2026 | 880.00 | $17.7K | — | Completed |
5/21/2026 | 212.00 | $4.3K | — | Completed |
5/21/2026 | 420.00 | $8.5K | — | Completed |
5/20/2026 | 66.00 | $1.3K | — | Completed |
5/20/2026 | 322.00 | $6.4K | — | Completed |
5/20/2026 | 130.00 | $2.6K | — | Completed |
5/20/2026 | 66.00 | $1.3K | — | Completed |
5/20/2026 | 66.00 | $1.3K | — | Completed |
5/20/2026 | 273.00 | $5.4K | — | Completed |
5/20/2026 | 66.00 | $1.3K | — | Completed |
5/7/2026 | 1.15K | $25.5K | — | Completed |
5/7/2026 | 278.00 | $6.1K | — | Completed |
5/7/2026 | 1.36K | $30.0K | — | Completed |
5/7/2026 | 278.00 | $6.1K | — | Completed |
5/7/2026 | 6.21K | $137.3K | — | Completed |
5/7/2026 | 278.00 | $6.1K | — | Completed |
5/7/2026 | 278.00 | $6.1K | — | Completed |
| Planned — Approximate Date | ||||
7/31/2026 | 67.66K | $1.89M | NASD | Planned |
| Total | 119.52K | $3.06M | ||