CASTLE BIOSCIENCES INC (CSTL)
$33.50-$0.76 (-2.22%) Today
Frank Stokes - Officer
Derek J. Maetzold - OfficerDerek J. Maetzold - OfficerCastle Biosciences Inc is a molecular diagnostics company. The group provides test solutions for the diagnosis and treatment of dermatologic cancers, Barrett's esophagus (BE), and uveal melanoma. The product portfolio of the company includes DecisionDx-Melanoma, a risk stratification gene expression profile (GEP) test; DecisionDx-SCC, a risk stratification test for cutaneous squamous cell carcinoma; MyPath Melanoma, a diagnostic GEP test for use in patients with difficult-to-diagnose melanocytic lesions; and TissueCypher, a test to predict future development of progression of high-grade dysplasia and/or esophageal cancer. The company derives revenues through the delivery of test reports for its molecular diagnostic tests.
https://www.castlebiosciences.comSEC filings for CSTL on EDGAR
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 81 | 219,136 | $6.36M |
| Grant or award | 7 | 82,362 | |
| Option exercise | 22 | 121,776 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
97 Form 4 filings on record, the earliest from Oct 8, 2024, newest first. Filing history page 1 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Tobin W. Juvenal - Officer | Open-market sale | Common Stock | 9,050 | $35.04 | $317K | |
| Kristen M. Oelschlager - Officer | Open-market sale | Common Stock | 12,218 | $33.69 | $412K | |
| Kristen M. Oelschlager - Officer | Open-market sale | Common Stock | 7,161 | $34.26 | $245K | |
| Kristen M. Oelschlager - Officer | Open-market sale | Common Stock | 5,223 | $34.64 | $181K | |
| Tobin W. Juvenal - Officer | Open-market sale | Common Stock | 1,730 | $29.59 | $51K | |
| Frank Stokes - Officer | Open-market sale | Common Stock | 24,908 | $29.77 | $742K | |
| Derek J. Maetzold - Officer | Option exercise | Common Stock | 1,100 | $2.39 | $3K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 1,100 | $30.02 | $33K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 2,714 | $30.02 | $81K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 2,306 | $30.02 | $69K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $30.02 | $8K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $30.02 | $8K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $30.02 | $8K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $30.02 | $8K | |
| Derek J. Maetzold - Officer | Option exercise | Stock option (right to buy) | 1,100 | $0.00 | - | |
| Tobin W. Juvenal - Officer | Open-market sale | Common Stock | 1,301 | $38.39 | $50K | |
| Derek J. Maetzold - Officer | Option exercise | Common Stock | 20,356 | $2.39 | $49K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 8,421 | $30.79 | $259K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 3,374 | $30.79 | $104K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 2,866 | $30.79 | $88K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 11,935 | $31.34 | $374K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 4,782 | $31.34 | $150K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 4,063 | $31.34 | $127K | |
| Derek J. Maetzold - Officer | Option exercise | Common Stock | 2,546 | $2.39 | $6K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 2,546 | $30.68 | $78K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 556 | $30.68 | $17K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 473 | $30.68 | $15K | |
| Derek J. Maetzold - Officer | Option exercise | Stock option (right to buy) | 20,356 | $0.00 | - | |
| Derek J. Maetzold - Officer | Option exercise | Stock option (right to buy) | 2,546 | $0.00 | - | |
| Kristen M. Oelschlager - Officer | Open-market sale | Common Stock | 3,000 | $29.12 | $87K | |
| Kristen M. Oelschlager - Officer | Open-market sale | Common Stock | 4,486 | $30.00 | $135K | |
| Kristen M. Oelschlager - Officer | Open-market sale | Common Stock | 1,100 | $30.62 | $34K | |
| Tobin W. Juvenal - Officer | Open-market sale | Common Stock | 8,149 | $28.84 | $235K | |
| Tobin W. Juvenal - Officer | Open-market sale | Common Stock | 7,270 | $29.58 | $215K | |
| Tobin W. Juvenal - Officer | Open-market sale | Common Stock | 1,891 | $30.26 | $57K | |
| Tobin W. Juvenal - Officer | Open-market sale | Common Stock | 1,730 | $28.25 | $49K | |
| Derek J. Maetzold - Officer | Option exercise | Common Stock | 6,480 | $2.39 | $15K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 6,480 | $30.15 | $195K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 1,983 | $30.15 | $60K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 1,690 | $30.15 | $51K | |
| Derek J. Maetzold - Officer | Option exercise | Common Stock | 10,664 | $2.39 | $25K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 10,664 | $30.35 | $324K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 4,232 | $30.35 | $128K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 3,597 | $30.35 | $109K | |
| Derek J. Maetzold - Officer | Option exercise | Stock option (right to buy) | 6,480 | $0.00 | - | |
| Derek J. Maetzold - Officer | Option exercise | Stock option (right to buy) | 10,664 | $0.00 | - | |
| Derek J. Maetzold - Officer | Option exercise | Common Stock | 6,214 | $2.39 | $15K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 5,982 | $24.13 | $144K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 1,307 | $24.13 | $32K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 1,110 | $24.13 | $27K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 268 | $24.13 | $6K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 268 | $24.13 | $6K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 268 | $24.13 | $6K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 268 | $24.13 | $6K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 232 | $25.06 | $6K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 50 | $25.06 | $1K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 43 | $25.06 | $1K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 10 | $25.06 | $251 | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 10 | $25.06 | $251 | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 10 | $25.06 | $251 | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 10 | $25.06 | $251 | |
| Derek J. Maetzold - Officer | Option exercise | Stock option (right to buy) | 6,214 | $0.00 | - | |
| Derek J. Maetzold - Officer | Option exercise | Common Stock | 550 | $2.39 | $1K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 550 | $22.92 | $13K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 1,357 | $22.92 | $31K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 1,153 | $22.92 | $26K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $22.92 | $6K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $22.92 | $6K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $22.92 | $6K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $22.92 | $6K | |
| Derek J. Maetzold - Officer | Option exercise | Stock option (right to buy) | 550 | $0.00 | - | |
| Derek J. Maetzold - Officer | Option exercise | Common Stock | 6,214 | $2.39 | $15K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 6,214 | $24.29 | $151K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 1,357 | $24.29 | $33K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 1,153 | $24.29 | $28K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $24.29 | $7K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $24.29 | $7K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $24.29 | $7K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $24.29 | $7K | |
| Derek J. Maetzold - Officer | Option exercise | Stock option (right to buy) | 6,214 | $0.00 | - | |
| Kristen M. Oelschlager - Officer | Open-market sale | Common Stock | 8,186 | $24.40 | $200K | |
| Kristen M. Oelschlager - Officer | Open-market sale | Common Stock | 400 | $24.78 | $10K | |
| Kristen M. Oelschlager - Officer | Open-market sale | Common Stock | 8,587 | $20.71 | $178K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 550 | $20.66 | $11K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 1,357 | $20.66 | $28K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 1,153 | $20.66 | $24K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $20.66 | $6K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $20.66 | $6K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $20.66 | $6K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $20.66 | $6K | |
| Derek J. Maetzold - Officer | Option exercise | Stock option (right to buy) | 550 | $0.00 | - | |
| Derek J. Maetzold - Officer | Option exercise | Common Stock | 550 | $2.39 | $1K | |
| Derek J. Maetzold - Officer | Option exercise | Common Stock | 204 | $2.39 | $488 | |
| Derek J. Maetzold - Officer | Option exercise | Common Stock | 6,010 | $2.39 | $14K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 6,214 | $20.86 | $130K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 1,357 | $20.86 | $28K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 1,153 | $20.86 | $24K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $20.86 | $6K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $20.86 | $6K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $20.86 | $6K | |
| Derek J. Maetzold - Officer | Open-market sale | Common Stock | 278 | $20.86 | $6K | |
| Derek J. Maetzold - Officer | Option exercise | Stock option (right to buy) | 204 | $0.00 | - | |
| Derek J. Maetzold - Officer | Option exercise | Stock option (right to buy) | 6,010 | $0.00 | - | |
 Tiffany Olson - Director | Grant or award | Restricted Stock Units | 11,766 | $0.00 | - | |
| Ellen Goldberg - Director | Grant or award | Restricted Stock Units | 11,766 | $0.00 | - | |
| Miles Harrison - Director | Grant or award | Restricted Stock Units | 11,766 | $0.00 | - | |
 Rodney Cotton - Director | Grant or award | Restricted Stock Units | 11,766 | $0.00 | - | |
| Kim Caple - Director | Grant or award | Restricted Stock Units | 11,766 | $0.00 | - | |
| Daniel Bradbury - Director | Grant or award | Restricted Stock Units | 11,766 | $0.00 | - | |
| G. Bradley Cole - Director | Grant or award | Restricted Stock Units | 11,766 | $0.00 | - | |
| G. Bradley Cole - Director | Option exercise | Common Stock | 13,667 | - | - | |
| G. Bradley Cole - Director | Option exercise | Restricted Stock Units | 13,667 | $0.00 | - | |
| Daniel Bradbury - Director | Option exercise | Common Stock | 13,667 | - | - | |
| Daniel Bradbury - Director | Option exercise | Restricted Stock Units | 13,667 | $0.00 | - | |
| Miles Harrison - Director | Option exercise | Common Stock | 13,667 | - | - | |
| Miles Harrison - Director | Option exercise | Restricted Stock Units | 13,667 | $0.00 | - | |
| Tiffany Olson - Director | Option exercise | Common Stock | 13,667 | - | - | |
| Tiffany Olson - Director | Option exercise | Restricted Stock Units | 13,667 | $0.00 | - | |
| Ellen Goldberg - Director | Option exercise | Common Stock | 13,667 | - | - | |
| Ellen Goldberg - Director | Option exercise | Restricted Stock Units | 13,667 | $0.00 | - | |
| Kim Caple - Director | Option exercise | Common Stock | 13,667 | - | - | |
| Kim Caple - Director | Option exercise | Restricted Stock Units | 13,667 | $0.00 | - |
A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| Tobin Juvenal | Chief Commercial Officer | 22,500 | $788K | View on EDGAR | |
| Kristen M. Oelschlager | Officer | 24,602 | $841K | View on EDGAR | |
| FRANKLIN M. STOKES | Officer | 24,908 | $741K | View on EDGAR |
CASTLE BIOSCIENCES INC (CSTL) had 24 insider filings in the last 90 days, with the most recent on 2026-08-27. The full record for CSTL runs to 97 Form 4 filings, the earliest from 2024-10-08. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
No insider purchases of CSTL were filed in the last 90 days.
81 insider sales of CSTL were filed in the last 90 days, totaling $6.36M.
This page tracks CSTL Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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