CASTLE BIOSCIENCES INC insider trading
CSTL$35.56+0.31 (+0.87%)
“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.”
Insider Trading vs Stock Price
Insider Trading vs Stock Price data
Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+60.0%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Open market purchase
Open market sellNet dollar flow · Buy / Sell balance
PremiumQ2 '25Q3 '25Q4 '25Q1 '26Q2 '26Q3 '26
Unlock quarterly net flowKey players
- DJDerek J. Maetzold0.6261%
- KMKristen M. Oelschlager0.2815%
- TWTobin W. Juvenal0.1702%
- EGEllen Goldberg0.134%
- TOTiffany Olson0.1295%
- KCKim Caple0.1182%
- DBDaniel Bradbury0.1166%
- MHMiles Harrison0.1166%
- FSFrank Stokes0.1151%
- RCRodney Cotton0.108%
AI Activity Analysis
PremiumComing soon
Insider activity
Fromto
| Company | Insider / role | Action | ΔOwn | Avg price | Amount | ||
|---|---|---|---|---|---|---|---|
| CSTL | Tobin W. Juvenal | Open market sell$35.4K | -2.0% | $34.20 | $35.4K | Sep 30, 2026 | Oct 1, 2026 |
| CSTL | Tobin W. Juvenal | Open market sell$197K | -9.5% | $35.50 | $197K | Sep 29, 2026 | Oct 1, 2026 |
| CSTL | Tobin W. Juvenal | Open market sell$116K | -5.3% | $35.14 | $116K | Sep 15, 2026 | Sep 16, 2026 |
| CSTL | Tobin W. Juvenal | Open market sell$107K | -5.1% | $32.32 | $107K | Sep 14, 2026 | Sep 16, 2026 |
| CSTL | Tobin W. Juvenal | Open market sell$56.8K | -2.6% | $32.81 | $56.8K | Aug 31, 2026 | Sep 2, 2026 |
| CSTL | Tobin W. Juvenal | Open market sell$317K | -11.9% | $35.04 | $317K | Aug 25, 2026 | Aug 27, 2026 |
| CSTL | Kristen M. Oelschlager | Open market sell$181K | -5.7% | $34.64 | $181K | Aug 25, 2026 | Aug 26, 2026 |
| CSTL | Kristen M. Oelschlager | Open market sell$245K | -7.3% | $34.26 | $245K | Aug 25, 2026 | Aug 26, 2026 |
| CSTL | Kristen M. Oelschlager | Open market sell$412K | -11.1% | $33.69 | $412K | Aug 24, 2026 | Aug 26, 2026 |
| CSTL | Tobin W. Juvenal | Open market sell$51.2K | -2.2% | $29.59 | $51.2K | Aug 17, 2026 | Aug 19, 2026 |
| CSTL | Frank Stokes | Open market sell$742K | -41.5% | $29.77 | $742K | Aug 14, 2026 | Aug 18, 2026 |
| CSTL | Kristen M. Oelschlager | Open market sell$33.7K | -1.0% | $30.62 | $33.7K | Aug 3, 2026 | Aug 5, 2026 |
| CSTL | Kristen M. Oelschlager | Open market sell$135K | -3.9% | $30.00 | $135K | Aug 3, 2026 | Aug 5, 2026 |
| CSTL | Kristen M. Oelschlager | Open market sell$87.4K | -2.5% | $29.12 | $87.4K | Aug 3, 2026 | Aug 5, 2026 |
| CSTL | Tobin W. Juvenal | Open market sell$48.9K | -2.1% | $28.25 | $48.9K | Aug 3, 2026 | Aug 4, 2026 |
| CSTL | Tobin W. Juvenal | Open market sell$57.2K | -2.3% | $30.26 | $57.2K | Jul 31, 2026 | Aug 4, 2026 |
| CSTL | Tobin W. Juvenal | Open market sell$215K | -8.1% | $29.58 | $215K | Jul 31, 2026 | Aug 4, 2026 |
| CSTL | Tobin W. Juvenal | Open market sell$235K | -8.3% | $28.84 | $235K | Jul 31, 2026 | Aug 4, 2026 |
| CSTL | Kristen M. Oelschlager | Open market sell$9.91K | -0.3% | $24.78 | $9.91K | Jul 1, 2026 | Jul 6, 2026 |
| CSTL | Kristen M. Oelschlager | Open market sell$200K | -6.4% | $24.40 | $200K | Jul 1, 2026 | Jul 6, 2026 |
| CSTL | Kristen M. Oelschlager | Open market sell$178K | -6.3% | $20.71 | $178K | Jun 16, 2026 | Jun 18, 2026 |
| CSTL | Derek J. Maetzold | Open market sell$16.5K | -0.2% | $25.39 | $16.5K | Mar 18, 2026 | Mar 19, 2026 |
| CSTL | Derek J. Maetzold | Open market sell$484K | -6.3% | $25.93 | $484K | Mar 17, 2026 | Mar 19, 2026 |
| CSTL | Derek J. Maetzold | Open market sell$3.36K | 0.0% | $26.68 | $3.36K | Mar 16, 2026 | Mar 17, 2026 |
| CSTL | Derek J. Maetzold | Open market sell$453K | -5.5% | $25.96 | $453K | Mar 16, 2026 | Mar 17, 2026 |
| CSTL | Derek J. Maetzold | Open market sell$336K | -4.0% | $25.45 | $336K | Mar 13, 2026 | Mar 17, 2026 |
| CSTL | Tobin W. Juvenal | Open market sell$527K | -19.4% | $25.24 | $527K | Mar 12, 2026 | Mar 16, 2026 |
| CSTL | Derek J. Maetzold | Open market sell$586K | -4.2% | $25.28 | $586K | Mar 12, 2026 | Mar 13, 2026 |
| CSTL | Frank Stokes | Open market sell$168K | -9.1% | $27.98 | $168K | Mar 5, 2026 | Mar 9, 2026 |
| CSTL | Frank Stokes | Open market sell$47.3K | -3.1% | $27.81 | $47.3K | Mar 3, 2026 | Mar 5, 2026 |
| CSTL | Frank Stokes | Open market sell$145K | -8.9% | $27.32 | $145K | Mar 3, 2026 | Mar 5, 2026 |
| CSTL | Derek J. Maetzold | Open market sell$6.6K | -0.1% | $38.61 | $6.6K | Feb 4, 2026 | Feb 5, 2026 |
| CSTL | Derek J. Maetzold | Open market sell$24.4K | -0.2% | $37.82 | $24.4K | Feb 4, 2026 | Feb 5, 2026 |
| CSTL | Derek J. Maetzold | Open market sell$128K | -0.9% | $39.91 | $128K | Feb 3, 2026 | Feb 5, 2026 |
| CSTL | Derek J. Maetzold | Open market sell$161K | -1.1% | $40.01 | $161K | Jan 20, 2026 | Jan 22, 2026 |
| CSTL | Derek J. Maetzold | Open market sell$53.7K | -0.5% | $40.10 | $53.7K | Jan 6, 2026 | Jan 7, 2026 |
| CSTL | Derek J. Maetzold | Open market sell$102K | -0.9% | $38.09 | $102K | Jan 5, 2026 | Jan 7, 2026 |
| CSTL | Derek J. Maetzold | Open market sell$33.5K | -0.3% | $40.35 | $33.5K | Dec 22, 2025 | Dec 29, 2025 |
| CSTL | Derek J. Maetzold | Open market sell$20.4K | -0.2% | $40.04 | $20.4K | Dec 17, 2025 | Dec 19, 2025 |
| CSTL | Kristen M. Oelschlager | Open market sell$585K | -12.0% | $39.31 | $585K | Dec 17, 2025 | Dec 19, 2025 |
| CSTL | Derek J. Maetzold | Open market sell$494K | -4.2% | $38.55 | $494K | Dec 16, 2025 | Dec 17, 2025 |
| CSTL | Derek J. Maetzold | Open market sell$39.8K | -0.3% | $39.30 | $39.8K | Dec 15, 2025 | Dec 17, 2025 |
| CSTL | Derek J. Maetzold | Open market sell$717K | -5.6% | $38.75 | $717K | Dec 15, 2025 | Dec 17, 2025 |
| CSTL | Tobin W. Juvenal | Open market sell$495K | -13.2% | $37.48 | $495K | Dec 11, 2025 | Dec 15, 2025 |
| CSTL | Frank Stokes | Open market sell$168K | -8.2% | $37.45 | $168K | Dec 11, 2025 | Dec 15, 2025 |
| CSTL | Derek J. Maetzold | Open market sell$53.6K | -0.5% | $40.03 | $53.6K | Dec 4, 2025 | Dec 8, 2025 |
| CSTL | Derek J. Maetzold | Open market sell$105K | -0.9% | $39.23 | $105K | Dec 2, 2025 | Dec 4, 2025 |
| CSTL | Derek J. Maetzold | Open market sell$171K | -1.4% | $40.09 | $171K | Nov 26, 2025 | Dec 1, 2025 |
| CSTL | Derek J. Maetzold | Open market sell$205K | -1.6% | $40.05 | $205K | Nov 25, 2025 | Nov 26, 2025 |
| CSTL | Tobin W. Juvenal | Open market sell$49.9K | -1.7% | $38.39 | $49.9K | Nov 24, 2025 | Aug 6, 2026 |