LYTIR

Insider · SEC Form 4 · Chief Commercial Officer

Juvenal Tobin W

In the 12 months to Nov 8, 2026, on the open market: sold $1.9M of CSTL. Filed a median of 2 business days after the trade.

Open-market purchases and sales this filer reported on SEC Form 4, by the day traded. Insiders have two business days to file. A sale marked 10b5-1 was made under a plan adopted in advance. How to read these

Insider purchases and sales, by month (last 12 months)Insider purchases: $0 in total; Insider sales: $1.9M in total.Jul: Insider sales $507KAug: Insider sales $474KSep: Insider sales $455KOct: Insider sales $459KDecJanFebMarAprMayJunJulAugSepOctNov
Insider purchases above the line: $0Insider sales below: $1.9M
Dollar value of open-market purchases and sales reported on SEC Form 4, by the month traded. Sales include pre-arranged 10b5-1 plan sales.
  1. CSTLSold: CASTLE BIOSCIENCES INC Oct 28, 2026 6,578 shares filed Oct 30, 2026 2 transactions 10b5-1 plan filing $240K
  2. CSTLSold: CASTLE BIOSCIENCES INC Oct 26, 2026 3,288 shares filed Oct 28, 2026 45,431 shares held directly after, as filed 10b5-1 plan filing $109K
  3. CSTLSold: CASTLE BIOSCIENCES INC Oct 12, 2026 3,288 shares filed Oct 14, 2026 48,719 shares held directly after, as filed 10b5-1 plan filing $111K
  4. CSTLSold: CASTLE BIOSCIENCES INC Sep 30, 2026 1,034 shares filed Oct 1, 2026 52,007 shares held directly after, as filed 10b5-1 plan filing $35K
  5. CSTLSold: CASTLE BIOSCIENCES INC Sep 29, 2026 5,543 shares filed Oct 1, 2026 53,041 shares held directly after, as filed 10b5-1 plan filing $197K
  6. CSTLSold: CASTLE BIOSCIENCES INC Sep 15, 2026 3,294 shares filed Sep 16, 2026 58,584 shares held directly after, as filed 10b5-1 plan filing $116K
  7. CSTLSold: CASTLE BIOSCIENCES INC Sep 14, 2026 3,306 shares filed Sep 16, 2026 61,878 shares held directly after, as filed 10b5-1 plan filing $107K
  8. CSTLSold: CASTLE BIOSCIENCES INC Aug 31, 2026 1,730 shares filed Sep 2, 2026 65,184 shares held directly after, as filed 10b5-1 plan filing $57K
  9. CSTLSold: CASTLE BIOSCIENCES INC Aug 25, 2026 9,050 shares filed Aug 27, 2026 66,914 shares held directly after, as filed 10b5-1 plan filing $317K
  10. CSTLSold: CASTLE BIOSCIENCES INC Aug 17, 2026 1,730 shares filed Aug 19, 2026 75,964 shares held directly after, as filed 10b5-1 plan filing $51K
  11. CSTLSold: CASTLE BIOSCIENCES INC Aug 3, 2026 1,730 shares filed Aug 4, 2026 78,995 shares held directly after, as filed 10b5-1 plan filing $49K
  12. CSTLSold: CASTLE BIOSCIENCES INC Jul 31, 2026 17,310 shares filed Aug 4, 2026 3 transactions 10b5-1 plan filing $507K
  13. CSTLSold: CASTLE BIOSCIENCES INC Nov 24, 2025 1,301 shares filed Aug 6, 2026 77,694 shares held directly after, as filed 10b5-1 plan filing $50K

Source: SEC Form 4 filings. Value is shares × the price reported on the filing; a filing whose price failed Lytir's check against the market price is left out, and a trade that related owners reported on separate forms is counted once. Filings can be late, amended or wrong at the source; see methodology.