Summary
Updated Aug 31, 2026
Argeris N. Karabelas files SEC Form 4 reports at REGENXBIO Inc. (RGNX). 3 SEC Form 4 filings on record going back to 2024, most recently on 2 June 2026. Most recent open-market trade: sold $101K of RGNX on 2 October 2024. Lifetime open-market sales: $101K.
Recent Transactions
4Every recent SEC Form 4 transaction Argeris N. Karabelas has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Argeris N. Karabelas go back to 2024: 3 primary Form 4 filings, an average of 1.0 per year. 3 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Argeris N. Karabelas 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.
- Gregory Austin Ciongoli - $949K of RGNX open-market activity in the last 12 months
- Steve Pakola - $940K of RGNX open-market activity in the last 12 months
- Curran Simpson - $417K of RGNX 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 Argeris N. Karabelas?
Argeris N. Karabelas is a corporate insider of REGENXBIO Inc. (RGNX). InsiderAlpha holds 3 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 Argeris N. Karabelas submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Argeris N. Karabelas been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($101K) across all tracked filings.
Where can I see all of Argeris N. Karabelas'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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