Maetzold Derek J's Form 4 filing
Castle Biosciences Inc (CSTL) · filed Aug 18, 2026
- Accession no.
- 0001628280-26-057642
- Filed
- Aug 18, 2026, 4:09 PM ET
- Trade date
- Aug 14, 2026
- Filing delay
- 4 days
- Rule 10b5-1 plan
- Checked
This filing lists 8 non-derivative transactions and 1 derivative transaction. Open-market sales total $217.1K. It was filed 4 days after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Maetzold Derek JCIK 0001239501 | Director, Officer (Pres. & Chief Exec. Officer) |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 14, 2026 | Common Stock | MOption exerciseAcquired | +1,100 | $2.39 | +$2,629 | 22,579 | Direct | |
| Aug 14, 2026 | Common Stock | SSaleDisposed | −1,100 | $30.02 | −$33,022 | 21,479 | Direct | |
| Aug 14, 2026 | Common Stock | SSaleDisposed | −2,714 | $30.02 | −$81,474.28 | 20,355 | Indirect | |
| Aug 14, 2026 | Common Stock | SSaleDisposed | −2,306 | $30.02 | −$69,226.12 | 17,301 | Indirect | |
| Aug 14, 2026 | Common Stock | SSaleDisposed | −278 | $30.02 | −$8,345.56 | 11,534 | Indirect | |
| Aug 14, 2026 | Common Stock | SSaleDisposed | −278 | $30.02 | −$8,345.56 | 11,534 | Indirect | |
| Aug 14, 2026 | Common Stock | SSaleDisposed | −278 | $30.02 | −$8,345.56 | 11,534 | Indirect | |
| Aug 14, 2026 | Common Stock | SSaleDisposed | −278 | $30.02 | −$8,345.56 | 11,534 | Indirect |
Derivative securities (Table II)
Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.
| Trade date | Security | Transaction | Underlying shares | Unit price | Value | Held after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 14, 2026 | Common Stock | MOption exerciseDisposed | −1,100 | $0.00 | $0 | 37,757 | Direct |
Footnotes
Livermore does not store Form 4 footnotes. For price ranges, how indirect holdings are held and trading plan details, read the original on SEC EDGAR.