Derek J Maetzold
Officer at CSTL
Data refreshed: Oct 11, 2026, 11:42 PM UTC
Total filings
88
Buys
0
$0
Sells
76
$5.0M
Grants & other
0
$0
Recent filings
| Filed | Symbol | Type | Qty | Value |
|---|---|---|---|---|
| Oct 7, 2026 | CSTL Castle Biosciences Inc | OTHER | 8,165 | $20K |
| Oct 7, 2026 | CSTL Castle Biosciences Inc | SELL | 8,580 | $305K |
| Oct 7, 2026 | CSTL Castle Biosciences Inc | SELL | 3,198 | $114K |
| Oct 7, 2026 | CSTL Castle Biosciences Inc | SELL | 2,718 | $97K |
| Sep 23, 2026 | CSTL Castle Biosciences Inc | SELL | 8,580 | $303K |
| Sep 23, 2026 | CSTL Castle Biosciences Inc | OTHER | 8,580 | $21K |
| Sep 23, 2026 | CSTL Castle Biosciences Inc | SELL | 3,198 | $113K |
| Sep 23, 2026 | CSTL Castle Biosciences Inc | SELL | 2,718 | $96K |
| Sep 15, 2026 | CSTL Castle Biosciences Inc | OTHER | 8,584 | $21K |
| Sep 15, 2026 | CSTL Castle Biosciences Inc | SELL | 8,361 | $268K |
| Sep 15, 2026 | CSTL Castle Biosciences Inc | SELL | 3,124 | $100K |
| Sep 15, 2026 | CSTL Castle Biosciences Inc | SELL | 223 | $7K |
| Sep 15, 2026 | CSTL Castle Biosciences Inc | SELL | 2,656 | $85K |
| Sep 15, 2026 | CSTL Castle Biosciences Inc | SELL | 83 | $3K |
| Sep 15, 2026 | CSTL Castle Biosciences Inc | SELL | 71 | $2K |
| Sep 1, 2026 | CSTL Castle Biosciences Inc | OTHER | 12,428 | $30K |
| Sep 1, 2026 | CSTL Castle Biosciences Inc | SELL | 11,472 | $380K |
| Sep 1, 2026 | CSTL Castle Biosciences Inc | SELL | 2,505 | $83K |
| Sep 1, 2026 | CSTL Castle Biosciences Inc | SELL | 2,129 | $71K |
| Sep 1, 2026 | CSTL Castle Biosciences Inc | SELL | 257 | $9K |
| Sep 1, 2026 | CSTL Castle Biosciences Inc | SELL | 257 | $9K |
| Sep 1, 2026 | CSTL Castle Biosciences Inc | SELL | 257 | $9K |
| Sep 1, 2026 | CSTL Castle Biosciences Inc | SELL | 257 | $9K |
| Sep 1, 2026 | CSTL Castle Biosciences Inc | SELL | 956 | $32K |
| Sep 1, 2026 | CSTL Castle Biosciences Inc | SELL | 209 | $7K |
| Sep 1, 2026 | CSTL Castle Biosciences Inc | SELL | 177 | $6K |
| Sep 1, 2026 | CSTL Castle Biosciences Inc | SELL | 21 | $711 |
| Sep 1, 2026 | CSTL Castle Biosciences Inc | SELL | 21 | $711 |
| Sep 1, 2026 | CSTL Castle Biosciences Inc | SELL | 21 | $711 |
| Sep 1, 2026 | CSTL Castle Biosciences Inc | SELL | 21 | $711 |
| Aug 18, 2026 | CSTL Castle Biosciences Inc | OTHER | 1,100 | $3K |
| Aug 18, 2026 | CSTL Castle Biosciences Inc | SELL | 1,100 | $33K |
| Aug 18, 2026 | CSTL Castle Biosciences Inc | SELL | 2,714 | $81K |
| Aug 18, 2026 | CSTL Castle Biosciences Inc | SELL | 2,306 | $69K |
| Aug 18, 2026 | CSTL Castle Biosciences Inc | SELL | 278 | $8K |
| Aug 18, 2026 | CSTL Castle Biosciences Inc | SELL | 278 | $8K |
| Aug 18, 2026 | CSTL Castle Biosciences Inc | SELL | 278 | $8K |
| Aug 18, 2026 | CSTL Castle Biosciences Inc | SELL | 278 | $8K |
| Aug 6, 2026 | CSTL Castle Biosciences Inc | OTHER | 20,356 | $49K |
| Aug 6, 2026 | CSTL Castle Biosciences Inc | SELL | 8,421 | $259K |
| Aug 6, 2026 | CSTL Castle Biosciences Inc | SELL | 3,374 | $104K |
| Aug 6, 2026 | CSTL Castle Biosciences Inc | SELL | 2,866 | $88K |
| Aug 6, 2026 | CSTL Castle Biosciences Inc | SELL | 11,935 | $374K |
| Aug 6, 2026 | CSTL Castle Biosciences Inc | SELL | 4,782 | $150K |
| Aug 6, 2026 | CSTL Castle Biosciences Inc | SELL | 4,063 | $127K |
| Aug 6, 2026 | CSTL Castle Biosciences Inc | OTHER | 2,546 | $6K |
| Aug 6, 2026 | CSTL Castle Biosciences Inc | SELL | 2,546 | $78K |
| Aug 6, 2026 | CSTL Castle Biosciences Inc | SELL | 556 | $17K |
| Aug 6, 2026 | CSTL Castle Biosciences Inc | SELL | 473 | $15K |
| Aug 4, 2026 | CSTL Castle Biosciences Inc | OTHER | 6,480 | $15K |