Insiders who reported open-market trades in the last 12 months at the companies Greef Roderick de 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.
Greef Roderick de is a corporate insider, tracked as Chief Executive Officer, Director of BIOLIFE SOLUTIONS INC (BLFS). InsiderAlpha holds 7 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Greef Roderick de submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Greef Roderick de been buying or selling stock?
Recorded transactions: 0 open-market purchases and 4 open-market sales ($3.61M) across all tracked filings.
Greef Roderick de is Chief Executive Officer, Director of BIOLIFE SOLUTIONS INC (BLFS). 7 SEC Form 4 filings on record going back to 2025, most recently on 9 October 2026. Most recent open-market trade: sold $789K of BLFS on 13 November 2025. Lifetime open-market sales: $3.61M.
Recent transactions
16
The latest 16 SEC Form 4 transactions reported by Greef Roderick de.
InsiderAlpha's records for Greef Roderick de go back to 2025: 7 primary Form 4 filings, an average of 3.5 per year. 1 recorded transaction carries 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.
