Insider Profile · SEC Form 4 Activity · Trailing 90 Days
Maetzold Derek J
Over the trailing 90 days, Maetzold Derek J (Director at CASTLE BIOSCIENCES INC) traded $1.2M of stock (net selling $1.1M) in CSTL, per 88 SEC Form 4 transactions.
- Role
- Director
- Companies
- CSTL
- Window
- Trailing 90 days · 88 transactions · CIK 1239501
- Net activity
- −$1.1M ($63K bought · $1.2M sold)
By Company (Trailing 90 Days)
| Symbol | Company | Txns | Bought | Sold | Net |
|---|---|---|---|---|---|
| CSTL | CASTLE BIOSCIENCES INC | 88 | $63K | $1.2M | −$1.1M |
Transactions (88)
| Date | Symbol | Type | Shares | Value | Description |
|---|---|---|---|---|---|
| 2026-07-27 | CSTL | Sell | 10 | $251 | Open market or private sale |
| 2026-07-27 | CSTL | Sell | 232 | $6K | Open market or private sale |
| 2026-07-27 | CSTL | Sell | 1.1K | $27K | Open market or private sale |
| 2026-07-27 | CSTL | Sell | 268 | $6K | Open market or private sale |
| 2026-07-27 | CSTL | Sell | 268 | $6K | Open market or private sale |
| 2026-07-27 | CSTL | Sell | 268 | $6K | Open market or private sale |
| 2026-07-27 | CSTL | Sell | 268 | $6K | Open market or private sale |
| 2026-07-27 | CSTL | Sell | 50 | $1K | Open market or private sale |
| 2026-07-27 | CSTL | Sell | 43 | $1K | Open market or private sale |
| 2026-07-27 | CSTL | Sell | 10 | $251 | Open market or private sale |
| 2026-07-27 | CSTL | Sell | 10 | $251 | Open market or private sale |
| 2026-07-27 | CSTL | Sell | 10 | $251 | Open market or private sale |
| 2026-07-27 | CSTL | Sell | 6.2K | $0 | Exercise or conversion of derivative security |
| 2026-07-27 | CSTL | Sell | 1.3K | $32K | Open market or private sale |
| 2026-07-27 | CSTL | Sell | 6.0K | $144K | Open market or private sale |
| 2026-07-27 | CSTL | Buy | 6.2K | $15K | Exercise or conversion of derivative security |
| 2026-07-14 | CSTL | Sell | 550 | $0 | Exercise or conversion of derivative security |
| 2026-07-14 | CSTL | Sell | 1.2K | $26K | Open market or private sale |
| 2026-07-14 | CSTL | Sell | 278 | $6K | Open market or private sale |
| 2026-07-14 | CSTL | Sell | 278 | $6K | Open market or private sale |
| 2026-07-14 | CSTL | Buy | 550 | $1K | Exercise or conversion of derivative security |
| 2026-07-14 | CSTL | Sell | 550 | $13K | Open market or private sale |
| 2026-07-14 | CSTL | Sell | 278 | $6K | Open market or private sale |
| 2026-07-14 | CSTL | Sell | 278 | $6K | Open market or private sale |
| 2026-07-14 | CSTL | Sell | 1.4K | $31K | Open market or private sale |
| 2026-07-01 | CSTL | Sell | 6.2K | $151K | Open market or private sale |
| 2026-07-01 | CSTL | Sell | 1.2K | $28K | Open market or private sale |
| 2026-07-01 | CSTL | Sell | 278 | $7K | Open market or private sale |
| 2026-07-01 | CSTL | Sell | 278 | $7K | Open market or private sale |
| 2026-07-01 | CSTL | Sell | 278 | $7K | Open market or private sale |
| 2026-07-01 | CSTL | Sell | 1.4K | $33K | Open market or private sale |
| 2026-07-01 | CSTL | Sell | 278 | $7K | Open market or private sale |
| 2026-07-01 | CSTL | Buy | 6.2K | $15K | Exercise or conversion of derivative security |
| 2026-07-01 | CSTL | Sell | 6.2K | $0 | Exercise or conversion of derivative security |
| 2026-06-15 | CSTL | Sell | 278 | $6K | Open market or private sale |
| 2026-06-15 | CSTL | Sell | 278 | $6K | Open market or private sale |
| 2026-06-15 | CSTL | Sell | 278 | $6K | Open market or private sale |
| 2026-06-15 | CSTL | Sell | 1.2K | $24K | Open market or private sale |
| 2026-06-15 | CSTL | Sell | 1.4K | $28K | Open market or private sale |
| 2026-06-15 | CSTL | Sell | 550 | $0 | Exercise or conversion of derivative security |
| 2026-06-15 | CSTL | Sell | 550 | $11K | Open market or private sale |
| 2026-06-15 | CSTL | Buy | 550 | $1K | Exercise or conversion of derivative security |
| 2026-06-15 | CSTL | Sell | 278 | $6K | Open market or private sale |
| 2026-06-01 | CSTL | Sell | 1.2K | $24K | Open market or private sale |
| 2026-06-01 | CSTL | Buy | 204 | $488 | Exercise or conversion of derivative security |
| 2026-06-01 | CSTL | Buy | 6.0K | $14K | Exercise or conversion of derivative security |
| 2026-06-01 | CSTL | Sell | 6.2K | $130K | Open market or private sale |
| 2026-06-01 | CSTL | Sell | 1.4K | $28K | Open market or private sale |
| 2026-06-01 | CSTL | Sell | 278 | $6K | Open market or private sale |
| 2026-06-01 | CSTL | Sell | 6.0K | $0 | Exercise or conversion of derivative security |
| 2026-06-01 | CSTL | Sell | 204 | $0 | Exercise or conversion of derivative security |
| 2026-06-01 | CSTL | Sell | 278 | $6K | Open market or private sale |
| 2026-06-01 | CSTL | Sell | 278 | $6K | Open market or private sale |
| 2026-06-01 | CSTL | Sell | 278 | $6K | Open market or private sale |
| 2026-05-21 | CSTL | Sell | 212 | $4K | Open market or private sale |
| 2026-05-21 | CSTL | Sell | 212 | $4K | Open market or private sale |
| 2026-05-21 | CSTL | Sell | 212 | $4K | Open market or private sale |
| 2026-05-21 | CSTL | Sell | 212 | $4K | Open market or private sale |
| 2026-05-21 | CSTL | Sell | 880 | $18K | Open market or private sale |
| 2026-05-21 | CSTL | Sell | 1.0K | $21K | Open market or private sale |
Activity shown covers the trailing 90 days of SEC Form 4 filings. "Buy" and "sell" follow the SEC acquired/disposed codes and include compensation events (grants, option exercises, tax withholding) unless noted. Historical fact, not investment advice.
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