12 insiders reported 136 Form 4 transactions for Interactive Brokers Group, Inc. (IBKR) over the past 18 months (most recent 2026-06-02). Recent activity: Conkling Lori A (Director) Buy 25 shares, Conkling Lori A (Director) Buy 25 shares, Conkling Lori A (Director) Buy 50 shares, Conkling Lori A (Director) Buy 25 shares, Nemser Earl H (Vice Chairman) Sell 60,882 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-02 | Conkling Lori A | Director | Buy | 25 | $2,152 |
| 2026-04-02 | Conkling Lori A | Director | Buy | 25 | $1,710 |
| 2026-03-26 | Conkling Lori A | Director | Buy | 50 | $3,660 |
| 2026-03-26 | Conkling Lori A | Director | Buy | 25 | $1,730 |
| 2026-01-28 | Nemser Earl H | Vice Chairman | Sell | 60,882 | $4.6M |
| 2026-01-28 | Nemser Earl H | Vice Chairman | Sell | 30,817 | $2.4M |
| 2026-01-28 | Nemser Earl H | Vice Chairman | Sell | 3,101 | $241,816 |
| 2026-01-28 | Nemser Earl H | Vice Chairman | Sell | 39,731 | $3.0M |
| 2026-01-28 | Nemser Earl H | Vice Chairman | Sell | 20,469 | $1.6M |
| 2026-01-26 | Galik Milan | Chief Executive Officer | Buy | 389 | $25,017 |
| 2026-01-26 | Nemser Earl H | Vice Chairman | Sell | 84,935 | $6.6M |
| 2026-01-26 | Nemser Earl H | Vice Chairman | Sell | 60,065 | $4.7M |
| 2026-01-26 | Nemser Earl H | Vice Chairman | Sell | 100,000 | $7.7M |
| 2026-01-26 | Yuen Nicole | Director | Buy | 389 | $25,017 |
| 2026-01-26 | Conkling Lori A | Director | Buy | 389 | $0 |
| 2026-01-26 | Conkling Lori A | Director | Buy | 389 | $25,017 |
| 2026-01-26 | Nemser Earl H | Vice Chairman | Buy | 389 | $25,017 |
| 2026-01-26 | Brody Paul Jonathan | Chief Financial Officer | Buy | 389 | $25,017 |
| 2026-01-26 | Bright Jill | Director | Buy | 389 | $25,017 |
| 2026-01-26 | Repetto Richard H | Director | Buy | 389 | $25,017 |
| 2026-01-26 | Harris Lawrence E | Director | Buy | 389 | $25,017 |
| 2026-01-26 | Peterffy William | Director | Buy | 389 | $25,017 |
| 2026-01-07 | Bright Jill | Director | Buy | 389 | $25,017 |
| 2026-01-07 | Galik Milan | Chief Executive Officer | Buy | 224,650 | $0 |
| 2026-01-07 | Galik Milan | Chief Executive Officer | Buy | 389 | $25,017 |
Source: SEC Form 4 filings · as of 2026-06-02