Other Insiders Active in the Same Sector
No other insider has filed at David Portnoy's companies, so these are insiders reporting open-market trades at other companies in the same sector.
- SUVRETTA CAPITAL MANAGEMENT, LLC - $90.98M of MANE open-market activity in the last 12 months
- Pontifax Management 4 G.P. (2015) Ltd. - $84.98M of KROS open-market activity in the last 12 months
- RA CAPITAL MANAGEMENT, L.P. - $83.13M of VOR open-market activity in the last 12 months
- Mark T. Bertolini - $82.60M of OSCR open-market activity in the last 12 months
- Frank Torti - $82.04M of ROIV open-market activity in the last 12 months
- ILLUMINA, INC. - $79.85M of GRAL open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is David Portnoy?
David Portnoy is a corporate insider, tracked as Chairman, Co-CEO, Director, 10% Owner of CRYO CELL INTERNATIONAL INC (CCEL). InsiderAlpha holds 12 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 David Portnoy submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has David Portnoy been buying or selling stock?
Recorded transactions: 25 open-market purchases ($552K) and 0 open-market sales across all tracked filings.
How accurate is David Portnoy's historical track record?
Across 25 tracked purchases, David Portnoy averaged +3.0% avg 30-day return with a 56% 30-day win rate. InsiderAlpha rates the track record at 3/5 stars.
Where can I see all of David Portnoy's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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