Interactive Brokers Group, Inc. (IBKR) Insider Transactions
Over the last 12 months, 11 Interactive Brokers Group, Inc. (IBKR) insiders filed 117 SEC Form 4 transactions — $37.6K in open-market purchases ( 2 distinct buyers) and $125.9M in open-market sales. 0% of all transactions were executed under a pre-scheduled Rule 10b5-1 trading plan.
- $37.6KOpen-market buys (1y)
- $125.9MOpen-market sells (1y)
- 11Distinct insiders
- 117Transactions filed
- 0%Under Rule 10b5-1 plan
- 2026-06-01Latest filing
Recent Form 4 Filings Most recent 50 of 117 (1-year window)
Each row is a single Form 4 filing event for IBKR, sourced directly from SEC EDGAR. The Type column classifies the SEC transaction code into Buy / Sell / Grant / Exercise / Other; the 10b5-1 badge marks trades executed under a pre-scheduled SEC Rule 10b5-1 plan.
| Date | Insider | Title | Type | SEC Code | Value | Shares | Price |
|---|---|---|---|---|---|---|---|
| 2026-06-01 | Conkling Lori A | — | Buy | P | $2.2K | 25 | $86.10 |
| 2026-05-08 | Brody Paul Jonathan | Chief Financial Officer | Other | F | $7.0M | 82,920 | $84.42 |
| 2026-05-08 | Mendonca Denis | Chief Accounting Officer | Other | F | $941.9K | 11,157 | $84.42 |
| 2026-05-08 | Galik Milan | Chief Executive Officer | Other | F | $21.5M | 255,039 | $84.42 |
| 2026-05-08 | Frank Thomas AJ | Executive Vice President | Other | F | $2.7M | 31,730 | $84.42 |
| 2026-05-08 | Nemser Earl H | Vice Chairman | Other | F | $1.9M | 22,486 | $84.42 |
| 2026-05-01 | Conkling Lori A | — | Buy | P | $2.0K | 25 | $79.64 |
| 2026-04-28 | Harris Lawrence E | — | Sell | S | $2.0M | 26,000 | $76.93 |
| 2026-04-01 | Conkling Lori A | — | Buy | P | $1.7K | 25 | $68.38 |
| 2026-03-02 | Conkling Lori A | — | Buy | — | $1.7K | 25 | $69.21 |
| 2026-02-25 | Conkling Lori A | — | Buy | — | $3.7K | 50 | $73.21 |
| 2026-01-27 | Nemser Earl H | Vice Chairman | Sell | — | $3.0M | 39,731 | $75.07 |
| 2026-01-27 | Nemser Earl H | Vice Chairman | Sell | — | $1.6M | 20,469 | $75.75 |
| 2026-01-26 | Nemser Earl H | Vice Chairman | Sell | — | $4.6M | 60,882 | $75.83 |
| 2026-01-26 | Nemser Earl H | Vice Chairman | Sell | — | $2.4M | 30,817 | $76.72 |
| 2026-01-26 | Nemser Earl H | Vice Chairman | Sell | — | $241.8K | 3,101 | $77.98 |
| 2026-01-23 | Nemser Earl H | Vice Chairman | Sell | — | $6.6M | 84,935 | $77.65 |
| 2026-01-23 | Nemser Earl H | Vice Chairman | Sell | — | $4.7M | 60,065 | $78.14 |
| 2026-01-22 | Nemser Earl H | Vice Chairman | Sell | — | $7.7M | 100,000 | $76.81 |
| 2026-01-01 | Peterffy William | — | Grant | — | $25.0K | 389 | $64.31 |
| 2026-01-01 | Nemser Earl H | Vice Chairman | Grant | — | $25.0K | 389 | $64.31 |
| 2026-01-01 | Brody Paul Jonathan | Chief Financial Officer | Grant | — | $25.0K | 389 | $64.31 |
| 2026-01-01 | Galik Milan | Chief Executive Officer | Grant | — | $25.0K | 389 | $64.31 |
| 2026-01-01 | Harris Lawrence E | — | Grant | — | $25.0K | 389 | $64.31 |
| 2026-01-01 | Conkling Lori A | — | Grant | — | $25.0K | 389 | $64.31 |
| 2026-01-01 | Bright Jill | — | Grant | — | $25.0K | 389 | $64.31 |
| 2026-01-01 | Yuen Nicole | — | Grant | — | $25.0K | 389 | $64.31 |
| 2026-01-01 | Repetto Richard H | — | Grant | — | $25.0K | 389 | $64.31 |
| 2025-12-31 | Conkling Lori A | — | Grant | — | $0 | 389 | $0.00 |
| 2025-12-31 | Brody Paul Jonathan | Chief Financial Officer | Grant | — | $0 | 53,452 | $0.00 |
| 2025-12-31 | Brody Paul Jonathan | Chief Financial Officer | Grant | — | $25.0K | 389 | $64.31 |
| 2025-12-31 | Harris Lawrence E | — | Grant | — | $25.0K | 389 | $64.31 |
| 2025-12-31 | Bright Jill | — | Grant | — | $25.0K | 389 | $64.31 |
| 2025-12-31 | Repetto Richard H | — | Grant | — | $25.0K | 389 | $64.31 |
| 2025-12-31 | Galik Milan | Chief Executive Officer | Grant | — | $0 | 224,650 | $0.00 |
| 2025-12-31 | Galik Milan | Chief Executive Officer | Grant | — | $25.0K | 389 | $64.31 |
| 2025-12-31 | Nemser Earl H | Vice Chairman | Grant | — | $0 | 23,240 | $0.00 |
| 2025-12-31 | Nemser Earl H | Vice Chairman | Grant | — | $25.0K | 389 | $64.31 |
| 2025-12-31 | Frank Thomas AJ | Executive Vice President | Grant | — | $0 | 13,944 | $0.00 |
| 2025-12-31 | Mendonca Denis | Chief Accounting Officer | Grant | — | $0 | 11,156 | $0.00 |
| 2025-12-31 | Conkling Lori A | — | Grant | — | $0 | 1,167 | $0.00 |
| 2025-12-31 | Conkling Lori A | — | Grant | — | $25.0K | 389 | $64.31 |
| 2025-12-31 | Yuen Nicole | — | Grant | — | $25.0K | 389 | $64.31 |
| 2025-12-31 | Peterffy William | — | Grant | — | $25.0K | 389 | $64.31 |
| 2025-12-29 | Galik Milan | Chief Executive Officer | Grant | — | $0 | 895,688 | $0.00 |
| 2025-10-29 | Harris Lawrence E | — | Sell | — | $734.5K | 10,645 | $69.00 |
| 2025-10-28 | Harris Lawrence E | — | Sell | — | $474.0K | 6,855 | $69.15 |
| 2025-10-27 | Harris Lawrence E | — | Sell | — | $523.0K | 7,500 | $69.73 |
| 2025-10-24 | Harris Lawrence E | — | Sell | — | $548.0K | 8,000 | $68.50 |
| 2025-10-23 | Bright Jill | — | Buy | — | $26.4K | 400 | $65.95 |
Showing the most recent 50 of 117 transactions. For the full 1-year history with sorting, filtering, and cross-ticker industry context, open the full insider transactions drilldown.
Top Insider Buyers of IBKR By dollar volume, 1-year window
- Bright Jill $26.4K
- Conkling Lori A $11.2K
Methodology & FAQ
How We Track IBKR Insider Transactions
Form 4 disclosures are sourced directly from SEC EDGAR and re-ingested on every pipeline cycle. A complete description of transaction-code handling, the open-market vs grant distinction, and the Rule 10b5-1 plan-reference heuristic is documented in the Methodology.
What is an SEC Form 4 filing for Interactive Brokers Group, Inc.?
Form 4 is a transaction-level disclosure that corporate insiders — officers, directors, and beneficial owners of more than 10% of a registered class of equity securities — must file with the SEC within two business days of any change in their beneficial ownership of Interactive Brokers Group, Inc. (IBKR) shares.
What is a Rule 10b5-1 trading plan?
Rule 10b5-1 is an SEC rule that lets insiders schedule trades in advance under a written plan, providing an affirmative defense against insider-trading allegations as long as the plan was adopted in good faith and not while in possession of material non-public information. Form 4 rows marked "10b5-1" on this page indicate the underlying trade was executed under such a plan; rows without the badge are discretionary or did not reference a plan in the Form 4 footnotes.
How is "insider buying" different from a stock grant or option exercise?
An insider buy (SEC transaction code P) is an open-market purchase of Interactive Brokers Group, Inc. (IBKR) stock executed at the prevailing market price using the insider's personal capital. Stock grants (code A) and option exercises (code M) are compensation events, not directional trades; they are tracked separately and excluded from the "conviction" signal because they are not discretionary purchases.
How recent is the data?
Form 4 transactions are typically reported within two business days of execution. Pactolio re-ingests the EDGAR feed on a nightly cycle and reflects new filings on the next ingest run, typically within 24 hours of EDGAR acceptance. The table on this page covers the most recent 1-year window.