Interactive Brokers Group Inc.

Last updated September 27, 2026

Organization details

Legal name
Interactive Brokers Group Inc.
Ownership
Public
Status
Active
Headquarters country
United States
Ticker symbol
IBKR
Primary stock exchange
Nasdaq

Identifiers

SEC CIK
0001381197

Board of directors

Chief executives

Milan Galik · Chief Executive Officer
Dates unknown

Board connections

2 of this board's directors also sit on 2 other boards.

Network of Interactive Brokers Group Inc.'s board connections Pursuit Attractions and Hospitality Inc. Pursuit Attractions an... Tradeweb Markets Inc. Tradeweb Markets Inc. Jill Bright Jill Bright Richard H. Repetto Richard H. Repetto Interactive Brokers Group...
Shared director Other board Same sector

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months
$42,000
8 purchases by 2 insiders
Sold, last 12 months
$37,948,128
19 sales by 3 insiders
Date Insider Transaction Shares Price Value
Aug 3, 2026 Lori A. Conkling Director Open-market purchase +25 $87.03 $2,176
Jul 31, 2026 Earl H. Nemser Director, Officer (Vice Chairman) Grant or award +803,568 $87.99 $70,705,948
Jul 1, 2026 Lori A. Conkling Director Open-market purchase +25 $88.03 $2,201
Jun 1, 2026 Lori A. Conkling Director Open-market purchase +25 $86.10 $2,153
May 8, 2026 Paul Jonathan Brody Director, Officer (Chief Financial Officer) Shares withheld for tax −82,920 $84.42 $7,000,106
May 8, 2026 Mendonca Denis Officer (Chief Accounting Officer) Shares withheld for tax −11,157 $84.42 $941,874
May 8, 2026 Milan Galik Director, Officer (Chief Executive Officer) Shares withheld for tax −255,039 $84.42 $21,530,392
May 8, 2026 Frank Thomas AJ Officer (Executive Vice President) Shares withheld for tax −31,730 $84.42 $2,678,647
May 8, 2026 Earl H. Nemser Director, Officer (Vice Chairman) Shares withheld for tax −22,486 $84.42 $1,898,268
May 1, 2026 Lori A. Conkling Director Open-market purchase +25 $79.64 $1,991
Apr 28, 2026 Lawrence E. Harris Director Open-market sale −26,000 $76.93 $2,000,180
Apr 1, 2026 Lori A. Conkling Director Open-market purchase +25 $68.38 $1,710
Mar 2, 2026 Lori A. Conkling Director Open-market purchase +25 $69.21 $1,730
Feb 25, 2026 Lori A. Conkling Director Open-market purchase +50 $73.21 $3,661
Jan 27, 2026 Earl H. Nemser Director, Officer (Vice Chairman) Open-market sale −39,731 $75.07 $2,982,606

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