Interactive Brokers's top three insider shareholders as of June 18, 2026 are Milan Galik (Chief Executive Officer, 3.47Mn shares), Paul Jonathan Brody (Chief Financial Officer, 2.94Mn shares), Thomas Peterffy (Chairman, 1.69Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Earl H Nemser | Vice Chairman | 451,830 | 0 | 26 Jan, 2026 |
| Thomas Aj Frank | Executive Vice President | 283,248 | 0 | 07 Jan, 2026 |
| Paul Jonathan Brody | Chief Financial Officer | 2,939,726 | 0 | 26 Jan, 2026 |
| Milan Galik | Chief Executive Officer | 3,470,428 | 0 | 26 Jan, 2026 |
| Thomas Peterffy | Chairman | 1,692,901 | 0 | 25 Apr, 2024 |
| Lawrence E Harris | - | 199,482 | 0 | 26 Jan, 2026 |
| Denis Mendonca | Chief Accounting Officer | 156,228 | 0 | 07 Jan, 2026 |
| Gary Katz | - | 1,928 | 0 | 06 Jan, 2023 |
| Jill Bright | - | 11,082 | 0 | 26 Jan, 2026 |
| John M. Damgard | - | 2,188 | 0 | 06 Jan, 2022 |
| Philip Uhde | - | 2,572 | 0 | 09 Jan, 2024 |
| William Peterffy | - | 10,126 | 0 | 26 Jan, 2026 |
| Nicole Yuen | - | 10,126 | 0 | 26 Jan, 2026 |
| Lori A Conkling | - | 2,434 | 0 | 02 Apr, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 01 Apr, 2026 | Lori A Conkling | Class A common stock | A | 25 | $68.38 | 2,434 | D | P |
| 25 Feb, 2026 | Lori A Conkling | Class A common stock | A | 50 | $73.21 | 2,384 | D | P |
| 02 Mar, 2026 | Lori A Conkling | Class A common stock | A | 25 | $69.21 | 2,409 | D | P |
| 26 Jan, 2026 | Earl H Nemser | Class A common stock | D | 60,882 | $75.83 | 94,118 | I | S |
| 26 Jan, 2026 | Earl H Nemser | Class A common stock | D | 60,882 | $75.83 | 94,118 | I | S |
| 26 Jan, 2026 | Earl H Nemser | Class A common stock | D | 30,817 | $76.72 | 63,301 | I | S |
| 26 Jan, 2026 | Earl H Nemser | Class A common stock | D | 30,817 | $76.72 | 63,301 | I | S |
| 26 Jan, 2026 | Earl H Nemser | Class A common stock | D | 3,101 | $77.98 | 60,200 | I | S |
| 26 Jan, 2026 | Earl H Nemser | Class A common stock | D | 3,101 | $77.98 | 60,200 | I | S |
| 27 Jan, 2026 | Earl H Nemser | Class A common stock | D | 39,731 | $75.07 | 20,469 | I | S |
| 27 Jan, 2026 | Earl H Nemser | Class A common stock | D | 39,731 | $75.07 | 20,469 | I | S |
| 27 Jan, 2026 | Earl H Nemser | Class A common stock | D | 20,469 | $75.75 | 0 | I | S |
| 27 Jan, 2026 | Earl H Nemser | Class A common stock | D | 20,469 | $75.75 | 0 | I | S |
| 01 Jan, 2026 | Nicole Yuen | Class A common stock | A | 389 | $64.31 | 10,126 | D | A |
| 01 Jan, 2026 | Lawrence E Harris | Class A common stock | A | 389 | $64.31 | 199,482 | D | A |
| 01 Jan, 2026 | William Peterffy | Class A common stock | A | 389 | $64.31 | 10,126 | D | A |
| 01 Jan, 2026 | Earl H Nemser | Class A common stock | A | 389 | $64.31 | 451,830 | D | A |
| 01 Jan, 2026 | Paul Jonathan Brody | Class A common stock | A | 389 | $64.31 | 2,939,726 | D | A |
| 01 Jan, 2026 | Nicole Yuen | Class A common stock | A | 389 | $64.31 | 10,126 | D | A |
| 01 Jan, 2026 | Earl H Nemser | Class A common stock | A | 389 | $64.31 | 451,830 | D | A |