Summary
Updated Aug 31, 2026
Earl H. Nemser is Vice Chairman, Director of Interactive Brokers Group, Inc. (IBKR). 13 SEC Form 4 filings on record going back to 2025, most recently on 4 August 2026. Most recent open-market trade: sold $1.55M of IBKR on 28 January 2026. Lifetime open-market sales: $35.57M.
Recent Transactions
20Every recent SEC Form 4 transaction Earl H. Nemser has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Earl H. Nemser go back to 2025: 13 primary Form 4 filings, an average of 6.5 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Earl H. Nemser 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.
- Paul Jonathan Brody - $59.13M of IBKR open-market activity in the last 12 months
- Lawrence E. Harris - $5.77M of IBKR open-market activity in the last 12 months
- Jill Bright - $26K of IBKR open-market activity in the last 12 months
- Lori A. Conkling - $16K of IBKR 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 Earl H. Nemser?
Earl H. Nemser is a corporate insider, tracked as Vice Chairman, Director of Interactive Brokers Group, Inc. (IBKR). InsiderAlpha holds 13 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 Earl H. Nemser submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Earl H. Nemser been buying or selling stock?
Recorded transactions: 0 open-market purchases and 31 open-market sales ($35.57M) across all tracked filings.
Where can I see all of Earl H. Nemser'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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