MAETZOLD DEREK J (Pres. & Chief Exec. Officer) sold 66.6% of their position (39.02K shares) of CASTLE BIOSCIENCES INC on the open market
Open‑market sale worth $1.21M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.
Common Stock
Shares
+20.36K
Price / share
$2.39
Trade value
$48.65K
% of position
Common Stock
Shares
−8.42K
Price / share
$30.79
Trade value
$259.27K
% of position
Common Stock
Shares
−3.37K
Price / share
$30.79
Trade value
$103.88K
% of position
Common Stock
Shares
−2.87K
Price / share
$30.79
Trade value
$88.24K
% of position
Common Stock
Shares
−11.94K
Price / share
$31.34
Trade value
$374K
% of position
Common Stock
Shares
−4.78K
Price / share
$31.34
Trade value
$149.85K
% of position
Common Stock
Shares
−4.06K
Price / share
$31.34
Trade value
$127.32K
% of position
Common Stock
Shares
+2.55K
Price / share
$2.39
Trade value
$6.08K
% of position
Common Stock
Shares
−2.55K
Price / share
$30.68
Trade value
$78.11K
% of position
Common Stock
Shares
−556.00
Price / share
$30.68
Trade value
$17.06K
% of position
Common Stock
Shares
−473.00
Price / share
$30.68
Trade value
$14.51K
% of position
Net shares
−16.11K
Net value
-$1.16M
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 8/4/2026 | M · Option Exercise | +20.36K | $2.39 | $48.65K | 94.8% | 21.48K | 41.84K |
| Common Stock Direct | 8/4/2026 | S · Sale | −8.42K | $30.79 | $259.27K | 20.1% | 41.84K | 33.41K |
| Common Stock Indirect | 8/4/2026 | S · Sale | −3.37K | $30.79 | $103.88K | 10.6% | 31.78K | 28.41K |
| Common Stock Indirect | 8/4/2026 | S · Sale | −2.87K | $30.79 | $88.24K | 10.6% | 27.01K | 24.14K |
| Common Stock Direct | 8/4/2026 | S · Sale | −11.94K | $31.34 | $374K | 35.7% | 33.41K | 21.48K |
| Common Stock Indirect | 8/4/2026 | S · Sale | −4.78K | $31.34 | $149.85K | 16.8% | 28.41K | 23.63K |
| Common Stock Indirect | 8/4/2026 | S · Sale | −4.06K | $31.34 | $127.32K | 16.8% | 24.14K | 20.08K |
| Common Stock Direct | 8/5/2026 | M · Option Exercise | +2.55K | $2.39 | $6.08K | 11.9% | 21.48K | 24.02K |
| Common Stock Direct | 8/5/2026 | S · Sale | −2.55K | $30.68 | $78.11K | 10.6% | 24.02K | 21.48K |
| Common Stock Indirect | 8/5/2026 | S · Sale | −556.00 | $30.68 | $17.06K | 2.4% | 23.63K | 23.07K |
| Common Stock Indirect | 8/5/2026 | S · Sale | −473.00 | $30.68 | $14.51K | 2.4% | 20.08K | 19.61K |
| Total | −16.11K | -$1.16M | ||||||
Stock option (right to buy)
Common Stock
20.36K shares
Shares
−20.36K
Strike price
2.39
Held after
41.40K
Exercisable
—
Stock option (right to buy)
Common Stock
2.55K shares
Shares
−2.55K
Strike price
2.39
Held after
38.86K
Exercisable
—
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Stock option (right to buy) Direct | Common Stock20.36K shares | 8/4/2026 | M · Option Exercise | −20.36K | 2.39 | — | 41.40K |
| Stock option (right to buy) Direct | Common Stock2.55K shares | 8/5/2026 | M · Option Exercise | −2.55K | 2.39 | — | 38.86K |
Common Stock
IndirectCommon Stock
IndirectCommon Stock
IndirectCommon Stock
IndirectCommon Stock
IndirectCommon Stock
IndirectCommon Stock
IndirectCommon Stock
Indirect| Security Title | Shares Owned | Ownership Type |
|---|---|---|
| Common Stock | 11.81K | Indirect |
| Common Stock | 27.86K | Indirect |
| Common Stock | 23.22K | Indirect |
| Common Stock | 40.94K | Indirect |
| Common Stock | 11.81K | Indirect |
| Common Stock | 11.96K | Indirect |
| Common Stock | 11.81K | Indirect |
| Common Stock | 11.81K | Indirect |
| Total | 151.22K | 151.22K indirect |