MAETZOLD DEREK J — SEC Form 4 filings
SEC reporting owner CIK 1239501. 73 Form 4 filings on record with FilingPulse; latest filed 2026-09-15.
Transaction summary — filings shown
Covers the 50 most recent of 73 filings on record, filed 2024-12-17 to 2026-09-15. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 294 legs across 46 filings — 513,220 shares, $13,936,785 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 61.
- Largest priced transaction: sale of 43,019 shares @ $19.50 ($839,043) in CASTLE BIOSCIENCES INC, filed 2025-08-15.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| CASTLE BIOSCIENCES INC (CSTL) | Pres. & Chief Exec. Officer, Director | 50 | — | 294 legs · 513,220 sh · $13,936,785 | 61 |
Form 4 filings — MAETZOLD DEREK J
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-15 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 8,584 @ $2.39 · Sale (S): 8,361 @ $32 · Sale (S): 3,124 @ $32 · Sale (S): 2,656 @ $32 · Sale (S): 223 @ $32.78 · Sale (S): 83 @ $32.78 · +2 more | EDGAR |
| 2026-09-01 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 12,428 @ $2.39 · Sale (S): 11,472 @ $33.14 · Sale (S): 2,505 @ $33.14 · Sale (S): 2,129 @ $33.14 · Sale (S): 257 @ $33.14 · Sale (S): 257 @ $33.14 · +10 more | EDGAR |
| 2026-08-18 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 1,100 @ $2.39 · Sale (S): 1,100 @ $30.02 · Sale (S): 2,714 @ $30.02 · Sale (S): 2,306 @ $30.02 · Sale (S): 278 @ $30.02 · Sale (S): 278 @ $30.02 · +3 more | EDGAR |
| 2026-08-06 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 20,356 @ $2.39 · Sale (S): 8,421 @ $30.79 · Sale (S): 3,374 @ $30.79 · Sale (S): 2,866 @ $30.79 · Sale (S): 11,935 @ $31.34 · Sale (S): 4,782 @ $31.34 · +7 more | EDGAR |
| 2026-08-04 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 6,480 @ $2.39 · Sale (S): 6,480 @ $30.15 · Sale (S): 1,983 @ $30.15 · Sale (S): 1,690 @ $30.15 · Option exercise (M): 10,664 @ $2.39 · Sale (S): 10,664 @ $30.35 · +4 more | EDGAR |
| 2026-07-29 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 6,214 @ $2.39 · Sale (S): 5,982 @ $24.13 · Sale (S): 1,307 @ $24.13 · Sale (S): 1,110 @ $24.13 · Sale (S): 268 @ $24.13 · Sale (S): 268 @ $24.13 · +10 more | EDGAR |
| 2026-07-16 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 550 @ $2.39 · Sale (S): 550 @ $22.92 · Sale (S): 1,357 @ $22.92 · Sale (S): 1,153 @ $22.92 · Sale (S): 278 @ $22.92 · Sale (S): 278 @ $22.92 · +3 more | EDGAR |
| 2026-07-06 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 6,214 @ $2.39 · Sale (S): 6,214 @ $24.29 · Sale (S): 1,357 @ $24.29 · Sale (S): 1,153 @ $24.29 · Sale (S): 278 @ $24.29 · Sale (S): 278 @ $24.29 · +3 more | EDGAR |
| 2026-06-17 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 550 @ $2.39 · Sale (S): 550 @ $20.66 · Sale (S): 1,357 @ $20.66 · Sale (S): 1,153 @ $20.66 · Sale (S): 278 @ $20.66 · Sale (S): 278 @ $20.66 · +3 more | EDGAR |
| 2026-06-03 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 204 @ $2.39 · Option exercise (M): 6,010 @ $2.39 · Sale (S): 6,214 @ $20.86 · Sale (S): 1,357 @ $20.86 · Sale (S): 1,153 @ $20.86 · Sale (S): 278 @ $20.86 · +5 more | EDGAR |
| 2026-05-22 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 130 @ $2.39 · Sale (S): 130 @ $20.00 · Sale (S): 322 @ $20.00 · Sale (S): 273 @ $20.00 · Sale (S): 66 @ $20.00 · Sale (S): 66 @ $20.00 · +12 more | EDGAR |
| 2026-05-11 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 6,214 @ $2.39 · Sale (S): 5,308 @ $22.08 · Sale (S): 1,159 @ $22.08 · Sale (S): 985 @ $22.08 · Sale (S): 237 @ $22.08 · Sale (S): 237 @ $22.08 · +10 more | EDGAR |
| 2026-04-23 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 550 @ $2.39 · Sale (S): 550 @ $25.10 · Sale (S): 1,357 @ $25.10 · Sale (S): 1,153 @ $25.10 · Sale (S): 278 @ $25.10 · Sale (S): 278 @ $25.10 · +3 more | EDGAR |
| 2026-04-08 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 6,214 @ $2.39 · Sale (S): 6,214 @ $25.03 · Sale (S): 1,357 @ $25.03 · Sale (S): 1,153 @ $25.03 · Sale (S): 278 @ $25.03 · Sale (S): 278 @ $25.03 · +3 more | EDGAR |
| 2026-03-30 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 550 @ $2.39 · Sale (S): 550 @ $25.55 · Sale (S): 1,357 @ $25.55 · Sale (S): 1,153 @ $25.55 · Sale (S): 278 @ $25.55 · Sale (S): 278 @ $25.55 · +3 more | EDGAR |
| 2026-03-19 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 18,650 @ $25.93 · Sale (S): 650 @ $25.39 | EDGAR |
| 2026-03-17 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 13,204 @ $25.45 · Sale (S): 17,449 @ $25.96 · Sale (S): 126 @ $26.68 | EDGAR |
| 2026-03-13 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 6,226 @ $2.39 · Sale (S): 17,310 @ $26.11 · Sale (S): 1,357 @ $26.11 · Sale (S): 1,160 @ $26.11 · Sale (S): 282 @ $26.11 · Sale (S): 279 @ $26.11 · +4 more | EDGAR |
| 2026-03-05 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Tax withholding (F): 19,043 @ $27.57 · Option exercise (M): 59,097 · Tax withholding (F): 17,931 @ $28.17 · Grant/award (A): 102,597 (derivative) @ $0 · Option exercise (M): 31,110 (derivative) @ $0 · Option exercise (M): 27,987 (derivative) @ $0 | EDGAR |
| 2026-02-05 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 3,200 @ $39.91 · Sale (S): 646 @ $37.82 · Sale (S): 171 @ $38.61 | EDGAR |
| 2026-01-22 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 4,017 @ $40.01 | EDGAR |
| 2026-01-14 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Grant/award (A): 62,219 @ $0 · Grant/award (A): 62,219 (derivative) @ $0 | EDGAR |
| 2026-01-07 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 2,678 @ $38.09 · Sale (S): 1,339 @ $40.10 | EDGAR |
| 2025-12-29 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 830 @ $40.35 | EDGAR |
| 2025-12-19 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 509 @ $40.04 | EDGAR |
| 2025-12-17 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 18,513 @ $38.75 · Sale (S): 1,012 @ $39.30 · Sale (S): 12,821 @ $38.55 | EDGAR |
| 2025-12-11 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 33,495 · Tax withholding (F): 13,181 @ $38.25 · Option exercise (M): 15,424 · Tax withholding (F): 6,070 @ $38.02 · Option exercise (M): 33,495 (derivative) @ $0 · Option exercise (M): 15,424 (derivative) @ $0 | EDGAR |
| 2025-12-08 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 1,339 @ $40.03 | EDGAR |
| 2025-12-04 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 2,678 @ $39.23 | EDGAR |
| 2025-12-01 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 4,258 @ $40.09 | EDGAR |
| 2025-11-26 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 5,115 @ $40.05 | EDGAR |
| 2025-11-20 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 2,678 @ $34.02 | EDGAR |
| 2025-11-06 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 6,458 @ $30.41 · Sale (S): 237 @ $31.12 · Sale (S): 2,678 @ $31.85 | EDGAR |
| 2025-10-23 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 1,339 @ $22.44 | EDGAR |
| 2025-10-06 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 1,339 @ $22.58 | EDGAR |
| 2025-09-19 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 1,339 @ $21.97 | EDGAR |
| 2025-09-04 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 1,339 @ $23.93 | EDGAR |
| 2025-08-19 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 1,339 @ $20.04 | EDGAR |
| 2025-08-15 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 43,019 @ $19.50 | EDGAR |
| 2025-08-12 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 66,991 @ $0 · Tax withholding (F): 23,972 @ $19.36 · Option exercise (M): 66,991 (derivative) @ $0 | EDGAR |
| 2025-07-01 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 4,944 @ $20.30 · Sale (S): 8,068 @ $20.30 · Sale (S): 6,924 @ $20.30 · Sale (S): 660 @ $20.30 · Sale (S): 660 @ $20.30 · Sale (S): 660 @ $20.30 · +1 more | EDGAR |
| 2025-04-23 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 1,236 @ $21.52 · Sale (S): 2,017 @ $21.52 · Sale (S): 1,731 @ $21.52 · Sale (S): 165 @ $21.52 · Sale (S): 165 @ $21.52 · Sale (S): 165 @ $21.52 · +1 more | EDGAR |
| 2025-04-10 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 213 @ $20.03 · Sale (S): 348 @ $20.03 · Sale (S): 299 @ $20.03 · Sale (S): 30 @ $20.03 · Sale (S): 28 @ $20.03 · Sale (S): 28 @ $20.03 · +8 more | EDGAR |
| 2025-03-28 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 1,236 @ $20.30 · Sale (S): 2,017 @ $20.30 · Sale (S): 1,731 @ $20.30 · Sale (S): 165 @ $20.30 · Sale (S): 165 @ $20.30 · Sale (S): 165 @ $20.30 · +1 more | EDGAR |
| 2025-03-11 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 20,516 @ $20.05 · Sale (S): 1,828 @ $20.05 · Sale (S): 1,569 @ $20.05 · Sale (S): 150 @ $20.05 · Sale (S): 150 @ $20.05 · Sale (S): 150 @ $20.05 · +9 more | EDGAR |
| 2025-03-06 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Option exercise (M): 31,109 · Tax withholding (F): 7,576 @ $22.23 · Sale (S): 1,247 @ $20.86 · Sale (S): 2,022 @ $20.86 · Sale (S): 1,739 @ $20.86 · Sale (S): 172 @ $20.86 · +5 more | EDGAR |
| 2025-01-15 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 556 @ $27.51 · Sale (S): 285 @ $27.51 · Sale (S): 267 @ $27.51 · Sale (S): 85 @ $27.51 · Sale (S): 85 @ $27.51 · Sale (S): 85 @ $27.51 · +15 more | EDGAR |
| 2025-01-08 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 678 @ $28.42 · Sale (S): 346 @ $28.42 · Sale (S): 325 @ $28.42 · Sale (S): 103 @ $28.42 · Sale (S): 102 @ $28.42 · Sale (S): 102 @ $28.42 · +22 more | EDGAR |
| 2024-12-19 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 9,252 @ $28.33 · Sale (S): 112 @ $28.76 | EDGAR |
| 2024-12-17 | 4 | CASTLE BIOSCIENCES INC (CSTL) | Sale (S): 10,164 @ $28.47 · Sale (S): 381 @ $28.47 · Sale (S): 357 @ $28.47 · Sale (S): 113 @ $28.47 · Sale (S): 113 @ $28.47 · Sale (S): 113 @ $28.47 · +9 more | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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