Maetzold Derek Jinsider trades
In SEC Form 4 filings, Maetzold Derek J is listed as Pres. & Chief Exec. Officer of Castle Biosciences Inc (CSTL). In the last 90 days, Maetzold Derek J sold $2.57M of Castle Biosciences Inc (CSTL) on the open market and bought none. All 29 sales were reported under a 10b5-1 trading plan.
Companies and roles
| Company | Role | Transactions | Last filed |
|---|---|---|---|
| CSTLCastle Biosciences Inc | Pres. & Chief Exec. Officer | 37 | Oct 21 |
Cluster buys
No cluster buy in the last 90 days included a purchase by this insider (two or more insiders buying within 14 days).
Form 4 historysince 2026-09-01
| Company | Traded | Filed | Type | Shares | Price | Value | Owned after | 10b5-1 plan | Filing |
|---|---|---|---|---|---|---|---|---|---|
| CSTLCastle Biosciences Inc | Oct 19 | Oct 21 | S | 8,580 | $31.91 | Sale −$273,788 | 12,484 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Oct 19 | Oct 21 | S | 3,198 | $31.91 | Sale −$102,048 | 4,840 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Oct 19 | Oct 21 | S | 2,718 | $31.91 | Sale −$86,731 | 4,114 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Oct 5 | Oct 7 | M | 8,165 | $2.39 | $19,514 | 29,644 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Oct 5 | Oct 7 | S | 8,580 | $35.57 | Sale −$305,156 | 21,064 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Oct 5 | Oct 7 | S | 3,198 | $35.57 | Sale −$113,740 | 8,038 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Oct 5 | Oct 7 | S | 2,718 | $35.57 | Sale −$96,668 | 6,832 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Oct 5 | Oct 7 | M · derivative | 8,165 | $2.39 | $19,514 | not reported | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Sep 21 | Sep 23 | M | 8,580 | $2.39 | $20,506 | 30,059 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Sep 21 | Sep 23 | S | 8,580 | $35.33 | Sale −$303,166 | 21,479 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Sep 21 | Sep 23 | S | 3,198 | $35.33 | Sale −$112,998 | 11,236 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Sep 21 | Sep 23 | S | 2,718 | $35.33 | Sale −$96,038 | 9,550 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Sep 21 | Sep 23 | M · derivative | 8,580 | $2.39 | $20,506 | 8,165 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Sep 11 | Sep 15 | M | 8,584 | $2.39 | $20,516 | 30,063 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Sep 11 | Sep 15 | S | 8,361 | $32.00 | Sale −$267,552 | 21,702 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Sep 11 | Sep 15 | S | 3,124 | $32.00 | Sale −$99,968 | 14,517 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Sep 11 | Sep 15 | S | 2,656 | $32.00 | Sale −$84,992 | 12,339 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Sep 11 | Sep 15 | S | 223 | $32.78 | Sale −$7,310 | 21,479 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Sep 11 | Sep 15 | S | 83 | $32.78 | Sale −$2,721 | 14,434 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Sep 11 | Sep 15 | S | 71 | $32.78 | Sale −$2,327 | 12,268 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Sep 11 | Sep 15 | M · derivative | 8,584 | $2.39 | $20,516 | 16,745 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Aug 28 | Sep 1 | M | 12,428 | $2.39 | $29,703 | 33,907 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Aug 28 | Sep 1 | S | 11,472 | $33.14 | Sale −$380,182 | 22,435 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Aug 28 | Sep 1 | S | 2,505 | $33.14 | Sale −$83,016 | 17,850 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Aug 28 | Sep 1 | S | 2,129 | $33.14 | Sale −$70,555 | 15,172 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Aug 28 | Sep 1 | S | 257 | $33.14 | Sale −$8,517 | 11,277 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Aug 28 | Sep 1 | S | 257 | $33.14 | Sale −$8,517 | 11,277 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Aug 28 | Sep 1 | S | 257 | $33.14 | Sale −$8,517 | 11,277 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Aug 28 | Sep 1 | S | 257 | $33.14 | Sale −$8,517 | 11,277 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Aug 28 | Sep 1 | S | 956 | $33.88 | Sale −$32,389 | 21,479 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Aug 28 | Sep 1 | S | 209 | $33.88 | Sale −$7,081 | 17,641 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Aug 28 | Sep 1 | S | 177 | $33.88 | Sale −$5,997 | 14,995 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Aug 28 | Sep 1 | S | 21 | $33.88 | Sale −$711 | 11,256 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Aug 28 | Sep 1 | S | 21 | $33.88 | Sale −$711 | 11,256 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Aug 28 | Sep 1 | S | 21 | $33.88 | Sale −$711 | 11,256 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Aug 28 | Sep 1 | S | 21 | $33.88 | Sale −$711 | 11,256 | Yes | Form 4 |
| CSTLCastle Biosciences Inc | Aug 28 | Sep 1 | M · derivative | 12,428 | $2.39 | $29,703 | 25,329 | Yes | Form 4 |
Published from this insider's public Form 4 filings on SEC EDGAR; the name is shown as filed. Named in a filing and want this page removed? See the privacy policy.