Mark L. Portnoy
Co-CEO · CRYO CELL INTERNATIONAL INC
Individual
- 2026
- Jan 9, 2026
- 1
Filings (90d)
Other insiders active in the same stocks
Insiders who have reported open-market trades at the same companies as Mark L. Portnoy. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- David Portnoy - $552K in CCEL purchases and sales on record
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Frequently asked questions
Who is Mark L. Portnoy?
Mark L. Portnoy is a corporate insider, tracked as Co-CEO of CRYO CELL INTERNATIONAL INC (CCEL). InsiderAlpha holds 1 primary Form 4 filing for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
When did Mark L. Portnoy last file a Form 4?
The only primary Form 4 on record is dated 9 January 2026.