IBKR Interactive Brokers Group, Inc.

NASDAQ
$85.81

Interactive Brokers Group, Inc. (IBKR) Insider Activity

What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.

30D 90D 6M 1Y
Insider signal In line Selling ran in line with IBKR's own trailing one-year pace, with 0% of sale value under a prearranged plan.
Cluster activity 0 buyers in the last 30 days 1 buyer in the last 90 days 0 sellers in the last 90 days
Insiders buying
2
9 transactions
Insiders selling
2
14 transactions
Purchases
$44.4K
625 shares
Sales
$36.5M
481,000 shares
Net activity
-$36.4M
purchases less sales

How much of that selling was preplanned? 0% planned / 100% discretionary

10b5-1 plan sales $0 0 transactions · 0 shares
Discretionary sales $36.5M 14 transactions · 481,000 shares

Largest single sale: $7.7M.

Where they traded

Buy Sell Dot area is proportional to transaction value.

Last open-market purchase: September 1, 2026 , by Conkling Lori A .

Recent open-market activity

Date Insider Role Action Shares Price Value Held after
Conkling Lori A Director Buy 25 $94.53 $2.4K 2,559
Conkling Lori A Director Buy 25 $87.03 $2.2K 2,534
Conkling Lori A Director Buy 25 $88.03 $2.2K 2,509
Conkling Lori A Director Buy 25 $86.10 $2.2K 2,484
Conkling Lori A Director Buy 25 $79.64 $2.0K 2,459
Harris Lawrence E Director Sell 26,000 $76.93 $2.0M 173,482 −13% of holding
Conkling Lori A Director Buy 25 $68.38 $1.7K 2,434
Conkling Lori A Director Buy 25 $69.21 $1.7K 2,409
Conkling Lori A Director Buy 50 $73.21 $3.7K 2,384
Nemser Earl H 2 fills Vice Chairman Sell 60,200 $75.30 $4.5M 20,469 −74.6% of holding
Nemser Earl H 3 fills Vice Chairman Sell 94,800 $76.19 $7.2M 94,118 −50.2% of holding
Nemser Earl H 2 fills Vice Chairman Sell 145,000 $77.85 $11.3M 215,065 −40.3% of holding
Nemser Earl H Vice Chairman Sell 100,000 $76.81 $7.7M 300,000 −25% of holding
Harris Lawrence E Director Sell 10,645 $69.00 $734.5K 198,704 −5.1% of holding
Harris Lawrence E Director Sell 6,855 $69.15 $474.0K 209,349 −3.2% of holding
Harris Lawrence E Director Sell 7,500 $69.73 $523.0K 216,204 −3.4% of holding
Harris Lawrence E Director Sell 8,000 $68.50 $548.0K 223,704 −3.5% of holding
Harris Lawrence E Director Sell 22,000 $67.63 $1.5M 231,704 −8.7% of holding
Bright Jill Director Buy 400 $65.95 $26.4K 10,304

Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.