Insiders who reported open-market trades in the last 12 months at the companies Frank Stokes files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Derek J. Maetzold - $10.10M in CSTL purchases and sales in the last 12 months
Frank Stokes is a corporate insider, tracked as Chief Financial Officer of CASTLE BIOSCIENCES INC (CSTL). InsiderAlpha holds 10 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Frank Stokes submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Frank Stokes been buying or selling stock?
Recorded transactions: 0 open-market purchases and 7 open-market sales ($1.50M) across all tracked filings.
Frank Stokes is Chief Financial Officer of CASTLE BIOSCIENCES INC (CSTL). 10 SEC Form 4 filings on record going back to 2024, most recently on 18 August 2026. Most recent open-market trade: sold $742K of CSTL on 18 August 2026. Lifetime open-market sales: $1.50M.
Recent transactions
20
The latest 20 SEC Form 4 transactions reported by Frank Stokes.
InsiderAlpha's records for Frank Stokes go back to 2024: 10 primary Form 4 filings, an average of 3.3 per year. 14 recorded transactions carry a Rule 10b5-1 plan flag. This identifies the marked transactions as reported under a trading plan; it does not establish the plan status of unmarked transactions.
