IBKR · Interactive Brokers Group Inc. Class A Common Stock
View on chartInsiders & Stakes
| Milan Galik Chief Executive Officer | ▼ Sell | Tax Withholding | 3,215,389 Shares held | 5/8/2026 | View profile |
| Paul Jonathan Brody Chief Financial Officer | ▼ Sell | Tax Withholding | 2,856,806 Shares held | 5/8/2026 | View profile |
| Peterffy Thomas Chairman | ▼ Sell | Gift | 1,516,182 Shares held | 2/20/2025 | View profile |
| Earl H. Nemser Vice Chairman | ▲ Buy | Grant | 803,568 Shares held | 7/31/2026 | View profile |
| Thomas AJ Frank Chief Information Officer | ▼ Sell | Tax Withholding | 251,518 Shares held | 5/8/2026 | View profile |
| Lawrence E. Harris Director | ▼ Sell | Open Market | 173,482 Shares held | 4/28/2026 | View profile |
| Denis Mendonca Chief Accounting Officer | ▼ Sell | Tax Withholding | 145,071 Shares held | 5/8/2026 | View profile |
| Jill Bright Director | ▲ Buy | Grant | 11,082 Shares held | 1/1/2026 | View profile |
| William Peterffy Director | ▲ Buy | Grant | 10,126 Shares held | 1/1/2026 | View profile |
| Nicole Yuen Director | ▲ Buy | Grant | 10,126 Shares held | 1/1/2026 | View profile |
| Richard H. Repetto Director | ▲ Buy | Grant | 3,046 Shares held | 1/1/2026 | View profile |
| Uhde Philip Director | ▲ Buy | Grant | 2,572 Shares held | 12/31/2023 | View profile |
| Lori A. Conkling | ▲ Buy | Open Market | 2,534 Shares held | 8/3/2026 | View profile |
| Damgard John M. Director | ▲ Buy | Grant | 2,188 Shares held | 12/31/2021 | View profile |
| Katz Gary Director | ▲ Buy | Grant | 1,928 Shares held | 12/31/2022 | View profile |
Transaction History
| Lori A. Conkling | ▲ Buy | Open Market | 25 | $2K | 8/3/2026 |
| Earl H. Nemser | ▲ Buy | Grant | 803,568 | $70.7M | 7/31/2026 |
| Lori A. Conkling | ▲ Buy | Open Market | 25 | $2K | 7/1/2026 |
| Lori A. Conkling | ▲ Buy | Open Market | 25 | $2K | 6/1/2026 |
| Paul Jonathan Brody | ▼ Sell | Tax Withholding | 82,920 | $7.0M | 5/8/2026 |
| Denis Mendonca | ▼ Sell | Tax Withholding | 11,157 | $942K | 5/8/2026 |
| Milan Galik | ▼ Sell | Tax Withholding | 255,039 | $21.5M | 5/8/2026 |
| Thomas AJ Frank | ▼ Sell | Tax Withholding | 31,730 | $2.7M | 5/8/2026 |
| Earl H. Nemser | ▼ Sell | Tax Withholding | 22,486 | $1.9M | 5/8/2026 |
| Lori A. Conkling | ▲ Buy | Open Market | 25 | $2K | 5/1/2026 |
| Lawrence E. Harris | ▼ Sell | Open Market | 26,000 | $2.0M | 4/28/2026 |
| Lori A. Conkling | ▲ Buy | Open Market | 25 | $2K | 4/1/2026 |
| Lori A. Conkling | ▲ Buy | Open Market | 25 | $2K | 3/2/2026 |
| Lori A. Conkling | ▲ Buy | Open Market | 50 | $4K | 2/25/2026 |
| Earl H. Nemser | ▼ Sell | Open Market | 39,731 | $3.0M | 1/27/2026 |
| Earl H. Nemser | ▼ Sell | Open Market | 20,469 | $1.6M | 1/27/2026 |
| Earl H. Nemser | ▼ Sell | Open Market | 60,882 | $4.6M | 1/26/2026 |
| Earl H. Nemser | ▼ Sell | Open Market | 30,817 | $2.4M | 1/26/2026 |
| Earl H. Nemser | ▼ Sell | Open Market | 3,101 | $242K | 1/26/2026 |
| Earl H. Nemser | ▼ Sell | Open Market | 84,935 | $6.6M | 1/23/2026 |
| Earl H. Nemser | ▼ Sell | Open Market | 60,065 | $4.7M | 1/23/2026 |
| Earl H. Nemser | ▼ Sell | Open Market | 100,000 | $7.7M | 1/22/2026 |
| Lawrence E. Harris | ▲ Buy | Grant | 389 | $25K | 1/1/2026 |
| Lori A. Conkling | ▲ Buy | Grant | 389 | $25K | 1/1/2026 |
| Jill Bright | ▲ Buy | Grant | 389 | $25K | 1/1/2026 |
| Nicole Yuen | ▲ Buy | Grant | 389 | $25K | 1/1/2026 |
| Richard H. Repetto | ▲ Buy | Grant | 389 | $25K | 1/1/2026 |
| William Peterffy | ▲ Buy | Grant | 389 | $25K | 1/1/2026 |
| Earl H. Nemser | ▲ Buy | Grant | 389 | $25K | 1/1/2026 |
| Paul Jonathan Brody | ▲ Buy | Grant | 389 | $25K | 1/1/2026 |
| Milan Galik | ▲ Buy | Grant | 389 | $25K | 1/1/2026 |
| Paul Jonathan Brody | ▲ Buy | Grant | 389 | $25K | 12/31/2025 |
| Lawrence E. Harris | ▲ Buy | Grant | 389 | $25K | 12/31/2025 |
| Jill Bright | ▲ Buy | Grant | 389 | $25K | 12/31/2025 |
| Richard H. Repetto | ▲ Buy | Grant | 389 | $25K | 12/31/2025 |
| Milan Galik | ▲ Buy | Grant | 224,650 | $0 | 12/31/2025 |
| Milan Galik | ▲ Buy | Grant | 389 | $25K | 12/31/2025 |
| Earl H. Nemser | ▲ Buy | Grant | 23,240 | $0 | 12/31/2025 |
| Earl H. Nemser | ▲ Buy | Grant | 389 | $25K | 12/31/2025 |
| Thomas AJ Frank | ▲ Buy | Grant | 13,944 | $0 | 12/31/2025 |
| Denis Mendonca | ▲ Buy | Grant | 11,156 | $0 | 12/31/2025 |
| Lori A. Conkling | ▲ Buy | Grant | 1,167 | $0 | 12/31/2025 |
| Lori A. Conkling | ▲ Buy | Grant | 389 | $25K | 12/31/2025 |
| Nicole Yuen | ▲ Buy | Grant | 389 | $25K | 12/31/2025 |
| William Peterffy | ▲ Buy | Grant | 389 | $25K | 12/31/2025 |
| Lori A. Conkling | ▲ Buy | Grant | 389 | $0 | 12/31/2025 |
| Paul Jonathan Brody | ▲ Buy | Grant | 53,452 | $0 | 12/31/2025 |
| Milan Galik | ▼ Sell | Other | 895,688 | $0 | 12/29/2025 |
| Lawrence E. Harris | ▼ Sell | Open Market | 10,645 | $735K | 10/29/2025 |
| Lawrence E. Harris | ▼ Sell | Open Market | 6,855 | $474K | 10/28/2025 |
| Lawrence E. Harris | ▼ Sell | Open Market | 7,500 | $523K | 10/27/2025 |
| Lawrence E. Harris | ▼ Sell | Open Market | 8,000 | $548K | 10/24/2025 |
| Jill Bright | ▲ Buy | Open Market | 400 | $26K | 10/23/2025 |
| Lawrence E. Harris | ▼ Sell | Open Market | 22,000 | $1.5M | 10/23/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 1,979 | $137K | 9/30/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 1,155 | $81K | 9/30/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 7,414 | $498K | 9/29/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 8,792 | $600K | 9/29/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 2,021 | $139K | 9/29/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 1,581 | $105K | 9/26/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 15,477 | $1.0M | 9/26/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 1,182 | $75K | 9/25/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 8,866 | $574K | 9/25/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 4,248 | $277K | 9/25/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 13,464 | $872K | 9/24/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 927 | $61K | 9/24/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 6,227 | $404K | 9/23/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 12,798 | $838K | 9/23/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 14,639 | $936K | 9/22/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 563 | $36K | 9/22/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 140 | $9K | 9/19/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 50,553 | $3.3M | 9/19/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 7,937 | $503K | 9/18/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 37,905 | $2.4M | 9/18/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 71,019 | $4.6M | 9/18/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 61,794 | $3.8M | 9/17/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 44,727 | $2.8M | 9/17/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 98,601 | $6.1M | 9/16/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 587 | $37K | 9/16/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 57,289 | $3.6M | 9/15/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 37,506 | $2.4M | 9/15/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 1,499 | $96K | 9/15/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 35,592 | $2.3M | 9/12/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 61,617 | $4.0M | 9/12/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 57,851 | $3.6M | 9/11/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 54,723 | $3.5M | 9/11/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 104,906 | $6.6M | 9/10/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 22,537 | $1.4M | 9/9/2025 |
| Paul Jonathan Brody | ▼ Sell | Open Market | 84,956 | $5.3M | 9/9/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 33,379 | $2.1M | 8/14/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 20,521 | $1.3M | 8/14/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 4,600 | $293K | 8/13/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 200 | $13K | 8/13/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 200 | $13K | 8/13/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 2,400 | $160K | 8/13/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 200 | $13K | 8/13/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 153,000 | $10.3M | 8/12/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 41,086 | $2.8M | 8/12/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 12,841 | $849K | 8/11/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 10,200 | $669K | 8/8/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 2,641 | $174K | 8/8/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 12,400 | $793K | 8/7/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 441 | $28K | 8/7/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 12,641 | $802K | 8/6/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 200 | $13K | 8/6/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 11,041 | $703K | 8/5/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 1,800 | $117K | 8/5/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 12,841 | $829K | 8/4/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 1,200 | $75K | 8/1/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 7,441 | $476K | 8/1/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 3,200 | $207K | 8/1/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 1,000 | $66K | 8/1/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 12,441 | $823K | 7/31/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 2,200 | $147K | 7/31/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 32,386 | $2.1M | 7/30/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 7,400 | $493K | 7/30/2025 |
| Paul Jonathan Brody | ▲ Buy | Grant | 1,000,000 | $66.2M | 7/30/2025 |
| Earl H. Nemser | ▲ Buy | Grant | 400,000 | $26.5M | 7/30/2025 |
| Earl H. Nemser | ▼ Sell | Open Market | 100 | $7K | 7/28/2025 |
| Earl H. Nemser | ▼ Sell | Gift | 500 | $0 | 6/23/2025 |
| Paul Jonathan Brody | ▼ Sell | Tax Withholding | 22,192 | $4.1M | 5/9/2025 |
| Denis Mendonca | ▼ Sell | Tax Withholding | 2,467 | $458K | 5/9/2025 |
| Thomas AJ Frank | ▼ Sell | Tax Withholding | 8,212 | $1.5M | 5/9/2025 |
| Earl H. Nemser | ▼ Sell | Tax Withholding | 5,178 | $961K | 5/9/2025 |
| Milan Galik | ▼ Sell | Tax Withholding | 63,580 | $11.8M | 5/9/2025 |
| Peterffy Thomas | ▼ Sell | Gift | 6,447 | $0 | 2/20/2025 |
| Peterffy Thomas | ▼ Sell | Gift | 85,427 | $0 | 2/18/2025 |
| Peterffy Thomas | ▼ Sell | Gift | 4,870 | $0 | 2/18/2025 |
| Jill Bright | ▲ Buy | Open Market | 135 | $30K | 1/31/2025 |
| William Peterffy | ▲ Buy | Grant | 142 | $25K | 12/31/2024 |
| Thomas AJ Frank | ▲ Buy | Grant | 6,709 | $0 | 12/31/2024 |
| Richard H. Repetto | ▲ Buy | Grant | 425 | $0 | 12/31/2024 |
| Richard H. Repetto | ▲ Buy | Grant | 142 | $25K | 12/31/2024 |
| Lawrence E. Harris | ▲ Buy | Grant | 142 | $25K | 12/31/2024 |
| Milan Galik | ▲ Buy | Grant | 69,305 | $0 | 12/31/2024 |
| Milan Galik | ▲ Buy | Grant | 142 | $25K | 12/31/2024 |
| Earl H. Nemser | ▲ Buy | Grant | 7,763 | $0 | 12/31/2024 |
| Earl H. Nemser | ▲ Buy | Grant | 142 | $25K | 12/31/2024 |
| Nicole Yuen | ▲ Buy | Grant | 142 | $25K | 12/31/2024 |
| Jill Bright | ▲ Buy | Grant | 142 | $25K | 12/31/2024 |
| Paul Jonathan Brody | ▲ Buy | Grant | 18,130 | $0 | 12/31/2024 |
| Paul Jonathan Brody | ▲ Buy | Grant | 142 | $25K | 12/31/2024 |
| Denis Mendonca | ▲ Buy | Grant | 3,748 | $0 | 12/31/2024 |
| Milan Galik | ▼ Sell | Gift | 223,922 | $0 | 12/31/2024 |
| Milan Galik | ▼ Sell | Other | 223,922 | $42.8M | 11/27/2024 |
| Milan Galik | ▼ Sell | Other | 223,922 | $42.8M | 11/27/2024 |
| Peterffy Thomas | ▼ Sell | Gift | 79,975 | $0 | 10/1/2024 |
| Earl H. Nemser | ▲ Buy | Grant | 100,000 | $11.9M | 7/25/2024 |
| Denis Mendonca | ▼ Sell | Tax Withholding | 1,964 | $234K | 5/9/2024 |
| Paul Jonathan Brody | ▼ Sell | Tax Withholding | 22,883 | $2.7M | 5/9/2024 |
| Thomas AJ Frank | ▼ Sell | Tax Withholding | 8,127 | $968K | 5/9/2024 |
| Earl H. Nemser | ▼ Sell | Tax Withholding | 4,419 | $526K | 5/9/2024 |
| Milan Galik | ▼ Sell | Tax Withholding | 61,995 | $7.4M | 5/9/2024 |
| Peterffy Thomas | ▼ Sell | Other | 62,296 | $7.1M | 4/23/2024 |
| Earl H. Nemser | ▼ Sell | Open Market | 5,000 | $535K | 2/22/2024 |
| Earl H. Nemser | ▼ Sell | Open Market | 5,000 | $524K | 2/21/2024 |
| Earl H. Nemser | ▼ Sell | Open Market | 2,906 | $306K | 2/16/2024 |
| Earl H. Nemser | ▼ Sell | Open Market | 2,094 | $222K | 2/16/2024 |
| Earl H. Nemser | ▼ Sell | Open Market | 2,100 | $214K | 2/15/2024 |
| Earl H. Nemser | ▼ Sell | Open Market | 3,400 | $350K | 2/15/2024 |
| Earl H. Nemser | ▼ Sell | Open Market | 500 | $52K | 2/15/2024 |
| Earl H. Nemser | ▼ Sell | Open Market | 4,000 | $420K | 2/15/2024 |
| Earl H. Nemser | ▼ Sell | Open Market | 10,650 | $1.1M | 2/14/2024 |
| Earl H. Nemser | ▼ Sell | Open Market | 14,350 | $1.5M | 2/14/2024 |
| Earl H. Nemser | ▼ Sell | Open Market | 20,809 | $2.1M | 2/13/2024 |
| Earl H. Nemser | ▼ Sell | Open Market | 29,191 | $3.0M | 2/13/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 2,672 | $252K | 2/6/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 995 | $94K | 2/6/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 34,345 | $3.3M | 2/5/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 1,922 | $185K | 2/5/2024 |
| Earl H. Nemser | ▼ Sell | Open Market | 24,547 | $2.3M | 2/5/2024 |
| Earl H. Nemser | ▼ Sell | Open Market | 1,235 | $119K | 2/5/2024 |
| Earl H. Nemser | ▼ Sell | Open Market | 74,218 | $7.1M | 2/2/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 229 | $21K | 2/2/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 765 | $71K | 2/2/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 536 | $50K | 2/2/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 765 | $73K | 2/2/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 29,704 | $2.9M | 2/2/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 15,595 | $1.5M | 2/2/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 36,883 | $3.3M | 2/1/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 6,987 | $629K | 1/30/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 1,621 | $147K | 1/30/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 46,001 | $4.2M | 1/29/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 708 | $65K | 1/29/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 30,888 | $2.8M | 1/26/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 18,193 | $1.7M | 1/26/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 41,537 | $3.8M | 1/25/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 6,779 | $619K | 1/25/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 29,200 | $2.7M | 1/24/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 15,443 | $1.4M | 1/24/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 36,637 | $3.4M | 1/23/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 9,991 | $922K | 1/23/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 37,132 | $3.4M | 1/22/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 13,168 | $1.2M | 1/22/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 1,626 | $145K | 1/19/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 90 | $8K | 1/19/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 12,917 | $1.1M | 1/18/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 90 | $8K | 1/17/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 181 | $16K | 1/17/2024 |
| Thomas AJ Frank | ▼ Sell | Open Market | 1,445 | $128K | 1/17/2024 |