Interactive Brokers Group, Inc. Insider Trading Activity
Every SEC Form 4 insider transaction reported for Interactive Brokers Group, Inc. (IBKR), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are IBKR insiders buying or selling?
In the last 12 months, Interactive Brokers Group, Inc. insiders reported 9 open-market purchases ($46.5K) and 6 sales ($36.5M) — net selling of $36.4M. Since January 2018, Trabud has recorded 504 Form 4 filings for IBKR: 11 buys ($201.8K) and 493 sells ($1.3B).
Source: SEC EDGAR Form 4
What stands out
- The largest open-market purchase in the last 12 months was $26.4K by Jill Bright (Director) on Oct 27, 2025. SEC ↗
- The most recent open-market purchase was reported on Oct 5, 2026 (13 days ago).
Key Statistics (January 2018 – Oct 5, 2026)
Total Form 4 filings
504
SEC EDGAR
Insider filers
10
Insider buys (11)
$201.8K
Insider sells (493)
$1.3B
Insider sentiment
Net sellingNet insider flow of $1.3B in net selling since January 2018, and $36.4M in net selling over the last 12 months. 3 insider buys in the last 90 days.
Recent IBKR insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Oct 5, 2026 | Lori A Conkling | Director | Purchase | 25 | $85.42 | $2.1K | SEC ↗ |
| Sep 2, 2026 | Lori A Conkling | Director | Purchase | 25 | $94.53 | $2.4K | SEC ↗ |
| Aug 4, 2026 | Lori A Conkling | Director | Purchase | 25 | $87.03 | $2.2K | SEC ↗ |
| Jul 1, 2026 | Lori A Conkling | Director | Purchase | 25 | $88.03 | $2.2K | SEC ↗ |
| Jun 2, 2026 | Lori A Conkling | Director | Purchase | 25 | $86.10 | $2.2K | SEC ↗ |
| May 4, 2026 | Lori A Conkling | Director | Purchase | 25 | $79.64 | $2.0K | SEC ↗ |
| Apr 29, 2026 | Lawrence E Harris | Director | Sale | 26.0K | $76.93 | $2.0M | SEC ↗ |
| Apr 2, 2026 | Lori A Conkling | Director | Purchase | 25 | $68.38 | $1.7K | SEC ↗ |
| Mar 26, 2026 | Lori A Conkling | Director | Purchase | 75 | $71.88 | $5.4K | SEC ↗ |
| Jan 28, 2026 | Earl H Nemser | Vice Chairman | Sale | 155.0K | $75.84 | $11.8M | SEC ↗ |
| Jan 26, 2026 | Earl H Nemser | Vice Chairman | Sale | 245.0K | $77.43 | $19.0M | SEC ↗ |
| Oct 31, 2025 | Lawrence E Harris | Director | Sale | 10.6K | $69.00 | $734.5K | SEC ↗ |
| Oct 29, 2025 | Lawrence E Harris | Director | Sale | 14.4K | $69.45 | $997.0K | SEC ↗ |
| Oct 27, 2025 | Jill Bright | Director | Purchase | 400 | $65.95 | $26.4K | SEC ↗ |
| Oct 27, 2025 | Lawrence E Harris | Director | Sale | 30.0K | $67.86 | $2.0M | SEC ↗ |
| Oct 1, 2025 | Paul Jonathan Brody | Chief Financial Officer | Sale | 21.4K | $68.11 | $1.5M | SEC ↗ |
| Sep 29, 2025 | Paul Jonathan Brody | Chief Financial Officer | Sale | 31.4K | $65.34 | $2.0M | SEC ↗ |
| Sep 25, 2025 | Paul Jonathan Brody | Chief Financial Officer | Sale | 33.4K | $65.09 | $2.2M | SEC ↗ |
| Sep 23, 2025 | Paul Jonathan Brody | Chief Financial Officer | Sale | 65.9K | $64.46 | $4.2M | SEC ↗ |
| Sep 19, 2025 | Paul Jonathan Brody | Chief Financial Officer | Sale | 223.4K | $63.54 | $14.2M | SEC ↗ |
| Sep 17, 2025 | Paul Jonathan Brody | Chief Financial Officer | Sale | 195.5K | $62.68 | $12.3M | SEC ↗ |
| Sep 15, 2025 | Paul Jonathan Brody | Chief Financial Officer | Sale | 209.8K | $63.62 | $13.3M | SEC ↗ |
| Sep 11, 2025 | Paul Jonathan Brody | Chief Financial Officer | Sale | 212.4K | $62.19 | $13.2M | SEC ↗ |
| Aug 15, 2025 | Earl H Nemser | Vice Chairman | Sale | 53.9K | $64.00 | $3.4M | SEC ↗ |
| Aug 14, 2025 | Earl H Nemser | Vice Chairman | Sale | 201.7K | $67.39 | $13.6M | SEC ↗ |
Showing the 25 most recent of 504 Form 4 filings for Interactive Brokers Group, Inc..
Most active IBKR insiders
- Thomas Peterffy244 filings
- Thomas AJ Frank141 filings
- Paul Jonathan Brody74 filings
- Earl H Nemser27 filings
- Lori A Conkling8 filings
Ask anything about IBKR insider activity
Use Trabud's AI agent to query Interactive Brokers Group, Inc.'s Form 4 history in plain English — "Show me IBKR CEO purchases this year" or compare it against any other ticker.
Open the AI agentIBKR insider trading FAQ
Are Interactive Brokers Group, Inc. insiders buying or selling?
In the last 12 months, Interactive Brokers Group, Inc. insiders reported 9 open-market purchases ($46.5K) and 6 sales ($36.5M) — net selling of $36.4M. Since January 2018, Trabud has recorded 504 Form 4 filings for IBKR: 11 buys ($201.8K) and 493 sells ($1.3B). Over the full record that is net selling of $1.3B.
How many insiders trade IBKR stock?
10 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for Interactive Brokers Group, Inc.. The most recent filing was accepted on Oct 5, 2026.
Where does Trabud get IBKR insider trading data?
All IBKR insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.