MAETZOLD DEREK J (Pres. & Chief Exec. Officer) sold 47.3% of their position (19.30K shares) of CASTLE BIOSCIENCES INC on the open market
Open‑market sale worth $500.1K — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 2 sales
Filed: 3/19/2026ACC: 0001628280-26-019823
DirectorOfficer10% Owner· Pres. & Chief Exec. Officer
Since Jul 2019
-19.30K
Net shares
Net seller
$500.1K
Total sold
2
Open market trades
0B · 2S
2
Total transactions
19.30K disposed
Non-Derivative Transactions2
Common Stock
Direct
Shares
−18.65K
Price / share
$25.93
Trade value
$483.59K
% of position
45.7%
3/17/2026
40.78K→22.13K
Common Stock
Direct
Shares
−650.00
Price / share
$25.39
Trade value
$16.50K
% of position
2.9%
3/18/2026
22.13K→21.48K
Total
Net shares
−19.30K
Net value
-$500.10K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Common Stock Direct | 3/17/2026 | S · Sale | −18.65K | $25.93 | $483.59K | 45.7% | 40.78K | 22.13K |
| Common Stock Direct | 3/18/2026 | S · Sale | −650.00 | $25.39 | $16.50K | 2.9% | 22.13K | 21.48K |
| Total | −19.30K | -$500.10K | ||||||
Derivative Transactions0
No derivative transactions reported
Non-Derivative Holdings (Post-Transaction)9
Common Stock
IndirectShares owned3.34K
Common Stock
IndirectShares owned3.34K
Common Stock
IndirectShares owned85.96K
Common Stock
IndirectShares owned18.72K
Common Stock
IndirectShares owned3.34K
Common Stock
IndirectShares owned3.34K
Common Stock
IndirectShares owned43.83K
Common Stock
IndirectShares owned44.32K
Common Stock
IndirectShares owned51.57K
Total
257.74K indirect257.74K
| Security Title | Shares Owned | Ownership Type |
|---|---|---|
| Common Stock | 3.34K | Indirect |
| Common Stock | 3.34K | Indirect |
| Common Stock | 85.96K | Indirect |
| Common Stock | 18.72K | Indirect |
| Common Stock | 3.34K | Indirect |
| Common Stock | 3.34K | Indirect |
| Common Stock | 43.83K | Indirect |
| Common Stock | 44.32K | Indirect |
| Common Stock | 51.57K | Indirect |
| Total | 257.74K | 257.74K indirect |
Derivative Holdings (Post-Transaction)0
No derivative holdings reported