← The Wire
CSTLNasdaq
CASTLE BIOSCIENCES INC
Services-Medical Laboratories · DE · CIK 1447362
Offers molecular diagnostic tests to aid clinicians in diagnosing and treating dermatologic cancers, Barrett's esophagus, atopic dermatitis, and uveal melanoma
$628M
Market cap
$24.32
Last close
+0.1%
1D
+14.7%
5D
324K
Volume
Price · last 39 sessions-4.7%
May 4L $18.15 · H $25.52Jun 29
140
Total filings
May 29, 2026
Last filing
12/31
Fiscal year end
8-KShareholder VoteMay 29, 202610-Q10-QMay 6, 20268-KResults of Operations · Reg FD DisclosureMay 6, 2026DEFA14ADEFA14AApr 8, 2026DEF 14ADEF 14AApr 8, 202610-K10-KFeb 26, 20268-KResults of Operations · Reg FD DisclosureFeb 26, 20268-KResults of Operations · Reg FD DisclosureJan 13, 202610-Q10-QNov 3, 20258-KResults of Operations · Reg FD DisclosureNov 3, 20258-KBylaw AmendmentAug 8, 202510-Q10-QAug 4, 20258-KResults of Operations · Reg FD DisclosureAug 4, 20258-KSecurity-Holder Rights · Bylaw AmendmentMay 23, 202510-Q10-QMay 5, 20258-KResults of Operations · Reg FD DisclosureMay 5, 2025DEFA14ADEFA14AApr 9, 2025DEF 14ADEF 14AApr 9, 202510-K10-KFeb 27, 20258-KResults of Operations · Reg FD DisclosureFeb 27, 20258-KResults of Operations · Reg FD DisclosureJan 13, 202510-Q10-QNov 4, 20248-KResults of Operations · Reg FD DisclosureNov 4, 202410-Q10-QAug 5, 20248-KResults of Operations · Reg FD DisclosureAug 5, 20248-KShareholder VoteMay 24, 2024DEFA14ADEFA14AMay 10, 202410-Q10-QMay 2, 20248-KResults of Operations · Reg FD DisclosureMay 2, 2024DEFA14ADEFA14AApr 10, 2024DEF 14ADEF 14AApr 10, 20248-KExecutive Change · Material AgreementMar 27, 202410-K10-KFeb 28, 20248-KResults of Operations · Reg FD DisclosureFeb 28, 2024SC 13GSC 13GFeb 14, 2024SC 13GSC 13GFeb 13, 20248-KResults of Operations · Reg FD DisclosureJan 8, 20248-KExecutive ChangeNov 9, 202310-Q10-QNov 2, 20238-KResults of Operations · Reg FD DisclosureNov 2, 202310-Q10-QAug 2, 20238-KResults of Operations · Reg FD DisclosureAug 2, 20238-KReg FD DisclosureJun 5, 20238-KShareholder VoteJun 1, 2023DEFA14ADEFA14AMay 15, 202310-Q10-QMay 3, 20238-KResults of Operations · Reg FD DisclosureMay 3, 2023DEFA14ADEFA14AApr 12, 2023DEF 14ADEF 14AApr 12, 202310-K10-KFeb 28, 20238-KResults of Operations · Reg FD DisclosureFeb 28, 2023SC 13GSCHEDULE 13GFeb 9, 20238-KExecutive ChangeJan 20, 20238-KResults of Operations · Reg FD DisclosureJan 9, 20238-KExecutive ChangeDec 28, 20228-KExecutive ChangeDec 15, 202210-Q10-QNov 2, 20228-KResults of Operations · Reg FD DisclosureNov 2, 202210-Q10-QAug 8, 20228-KResults of Operations · Reg FD DisclosureAug 8, 20228-KShareholder VoteJun 8, 20228-KCompany UpdateJun 3, 202210-Q10-QMay 9, 20228-KResults of Operations · Reg FD DisclosureMay 9, 20228-KEquity IssuanceMay 2, 2022DEFA14ADEFA14AApr 21, 2022DEF 14ADEF 14AApr 21, 20228-KMaterial AgreementApr 7, 20228-KMaterial Agreement · Equity IssuanceApr 4, 20228-KMaterial AgreementMar 17, 202210-K10-KFeb 28, 20228-KResults of Operations · Reg FD DisclosureFeb 28, 2022SC 13GSC 13GFeb 4, 20228-K/ACompany UpdateJan 14, 20228-KResults of Operations · Reg FD DisclosureJan 10, 20228-KExecutive ChangeJan 5, 20228-KMaterial Agreement · Acquisition / DispositionDec 6, 20218-KMaterial AgreementDec 3, 202110-Q10-QNov 8, 20218-KResults of Operations · Reg FD DisclosureNov 8, 2021
Insider Activity
In the 90 days to Mar 26, 2026: 4 sold $4.1M.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Mar 26, 2026 | Maetzold Derek JPres. & Chief Exec. Officer | Sell | 1,357 | $25.55 | $35K |
| Mar 26, 2026 | Maetzold Derek JPres. & Chief Exec. Officer | Sell | 1,153 | $25.55 | $29K |
| Mar 26, 2026 | Maetzold Derek JPres. & Chief Exec. Officer | Sell | 550 | $25.55 | $14K |
| Mar 26, 2026 | Maetzold Derek JPres. & Chief Exec. Officer | Sell | 278 | $25.55 | $7K |
| Mar 18, 2026 | Maetzold Derek JPres. & Chief Exec. Officer | Sell | 650 | $25.39 | $17K |
| Mar 17, 2026 | Maetzold Derek JPres. & Chief Exec. Officer | Sell | 18,650 | $25.93 | $484K |
| Mar 16, 2026 | Maetzold Derek JPres. & Chief Exec. Officer | Sell | 17,449 | $25.96 | $453K |
| Mar 16, 2026 | Maetzold Derek JPres. & Chief Exec. Officer | Sell | 126 | $26.68 | $3K |
| Mar 13, 2026 | Maetzold Derek JPres. & Chief Exec. Officer | Sell | 13,204 | $25.45 | $336K |
| Mar 12, 2026 | Maetzold Derek JPres. & Chief Exec. Officer | Sell | 23,179 | $25.28 | $586K |
| Mar 12, 2026 | Juvenal Tobin WChief Commercial Officer | Sell | 20,863 | $25.24 | $527K |
| Mar 11, 2026 | Maetzold Derek JPres. & Chief Exec. Officer | Sell | 17,310 | $26.11 | $452K |
| Mar 11, 2026 | Maetzold Derek JPres. & Chief Exec. Officer | Sell | 1,357 | $26.11 | $35K |
| Mar 11, 2026 | Maetzold Derek JPres. & Chief Exec. Officer | Sell | 1,160 | $26.11 | $30K |
| Mar 11, 2026 | Maetzold Derek JPres. & Chief Exec. Officer | Sell | 282 | $26.11 | $7K |
| Mar 11, 2026 | Maetzold Derek JPres. & Chief Exec. Officer | Sell | 279 | $26.11 | $7K |
| Mar 5, 2026 | Stokes FrankChief Financial Officer | Sell | 6,001 | $27.98 | $168K |
| Mar 5, 2026 | Cole G BradleyDirector | Sell | 4,748 | $28.44 | $135K |
| Mar 5, 2026 | Cole G BradleyDirector | Sell | 2,655 | $28.51 | $76K |
| Mar 3, 2026 | Stokes FrankChief Financial Officer | Sell | 5,300 | $27.32 | $145K |
Open-market buys & sells (Form 4, transaction codes P/S). Source: SEC structured insider data.
Similar companies
Comparable business profile · signals at a glance