Interactive Brokers Group, Inc. (IBKR)
Interactive Brokers Group, Inc. (IBKR) Insider Trading
Directors, officers and holders of more than 10% of IBKR report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 50 most recent of 152 transactions on file: 10 with code P, 10 with code S and 30 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Nov 2, 2026 | Conkling Lori A | Director | P Purchase | 25 | $78.44 | $1,961 |
| Oct 28, 2026 | Harris Lawrence E | Director | S Sale | 25,000 | $82.61 | $2,065,250 |
| Oct 1, 2026 | Conkling Lori A | Director | P Purchase | 25 | $85.42 | $2,136 |
| Sep 1, 2026 | Conkling Lori A | Director | P Purchase | 25 | $94.53 | $2,363 |
| Aug 3, 2026 | Conkling Lori A | Director | P Purchase | 25 | $87.03 | $2,176 |
| Jul 31, 2026 | Nemser Earl H | Vice Chairman | A Award | 803,568 | $87.99 | $70,705,948 |
| Jul 1, 2026 | Conkling Lori A | Director | P Purchase | 25 | $88.03 | $2,201 |
| Jun 1, 2026 | Conkling Lori A | Director | P Purchase | 25 | $86.10 | $2,153 |
| May 8, 2026 | Mendonca Denis | Chief Accounting Officer | F Tax Payment | 11,157 | $84.42 | $941,874 |
| May 8, 2026 | Brody Paul Jonathan | Chief Financial Officer | F Tax Payment | 82,920 | $84.42 | $7,000,106 |
| May 8, 2026 | Galik Milan | Chief Executive Officer | F Tax Payment | 255,039 | $84.42 | $21,530,392 |
| May 8, 2026 | Frank Thomas AJ | Executive Vice President | F Tax Payment | 31,730 | $84.42 | $2,678,647 |
| May 8, 2026 | Nemser Earl H | Vice Chairman | F Tax Payment | 22,486 | $84.42 | $1,898,268 |
| May 1, 2026 | Conkling Lori A | Director | P Purchase | 25 | $79.64 | $1,991 |
| Apr 28, 2026 | Harris Lawrence E | Director | S Sale | 26,000 | $76.93 | $2,000,180 |
| Apr 1, 2026 | Conkling Lori A | Director | P Purchase | 25 | $68.38 | $1,710 |
| Mar 2, 2026 | Conkling Lori A | Director | P Purchase | 25 | $69.21 | $1,730 |
| Feb 25, 2026 | Conkling Lori A | Director | P Purchase | 50 | $73.21 | $3,660 |
| Jan 27, 2026 | Nemser Earl H | Vice Chairman | S Sale | 39,731 | $75.07 | $2,982,606 |
| Jan 27, 2026 | Nemser Earl H | Vice Chairman | S Sale | 20,469 | $75.75 | $1,550,527 |
| Jan 26, 2026 | Nemser Earl H | Vice Chairman | S Sale | 30,817 | $76.72 | $2,364,280 |
| Jan 26, 2026 | Nemser Earl H | Vice Chairman | S Sale | 3,101 | $77.98 | $241,816 |
| Jan 26, 2026 | Nemser Earl H | Vice Chairman | S Sale | 60,882 | $75.83 | $4,616,682 |
| Jan 23, 2026 | Nemser Earl H | Vice Chairman | S Sale | 84,935 | $77.65 | $6,595,203 |
| Jan 23, 2026 | Nemser Earl H | Vice Chairman | S Sale | 60,065 | $78.14 | $4,693,479 |
| Jan 22, 2026 | Nemser Earl H | Vice Chairman | S Sale | 100,000 | $76.81 | $7,681,000 |
| Jan 1, 2026 | Conkling Lori A | Director | A Award | 389 | $64.31 | $25,017 |
| Jan 1, 2026 | Bright Jill | Director | A Award | 389 | $64.31 | $25,017 |
| Jan 1, 2026 | Yuen Nicole | Director | A Award | 389 | $64.31 | $25,017 |
| Jan 1, 2026 | Brody Paul Jonathan | Chief Financial Officer | A Award | 389 | $64.31 | $25,017 |
| Jan 1, 2026 | Galik Milan | Chief Executive Officer | A Award | 389 | $64.31 | $25,017 |
| Jan 1, 2026 | Peterffy William | Director | A Award | 389 | $64.31 | $25,017 |
| Jan 1, 2026 | Harris Lawrence E | Director | A Award | 389 | $64.31 | $25,017 |
| Jan 1, 2026 | Repetto Richard H | Director | A Award | 389 | $64.31 | $25,017 |
| Jan 1, 2026 | Nemser Earl H | Vice Chairman | A Award | 389 | $64.31 | $25,017 |
| Dec 31, 2025 | Bright Jill | Director | A Award | 389 | $64.31 | $25,017 |
| Dec 31, 2025 | Nemser Earl H | Vice Chairman | A Award | 23,240 | Not measured | Not measured |
| Dec 31, 2025 | Nemser Earl H | Vice Chairman | A Award | 389 | $64.31 | $25,017 |
| Dec 31, 2025 | Mendonca Denis | Chief Accounting Officer | A Award | 11,156 | Not measured | Not measured |
| Dec 31, 2025 | Brody Paul Jonathan | Chief Financial Officer | A Award | 53,452 | Not measured | Not measured |
| Dec 31, 2025 | Brody Paul Jonathan | Chief Financial Officer | A Award | 389 | $64.31 | $25,017 |
| Dec 31, 2025 | Harris Lawrence E | Director | A Award | 389 | $64.31 | $25,017 |
| Dec 31, 2025 | Galik Milan | Chief Executive Officer | A Award | 224,650 | Not measured | Not measured |
| Dec 31, 2025 | Conkling Lori A | Director | A Award | 1,167 | Not measured | Not measured |
| Dec 31, 2025 | Galik Milan | Chief Executive Officer | A Award | 389 | $64.31 | $25,017 |
| Dec 31, 2025 | Conkling Lori A | Director | A Award | 389 | Not measured | Not measured |
| Dec 31, 2025 | Repetto Richard H | Director | A Award | 389 | $64.31 | $25,017 |
| Dec 31, 2025 | Frank Thomas AJ | Executive Vice President | A Award | 13,944 | Not measured | Not measured |
| Dec 31, 2025 | Conkling Lori A | Director | A Award | 389 | $64.31 | $25,017 |
| Dec 31, 2025 | Yuen Nicole | Director | A Award | 389 | $64.31 | $25,017 |
The full Form 4 history is on the IBKR company page (Insider Trades card, View all).
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.