CIK 0001381197 · Large accelerated filer
Interactive Brokers Group, Inc.
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- IBKR
- Exchange
- Nasdaq
- Industry
- Security Brokers, Dealers & Flotation Companies
- FY end
- Dec 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 300390693
- Phone
- 203-618-5800
- Business address
- ONE PICKWICK PLAZA, GREENWICH, CT, 06830
- Open-market buys, last 90 days
- $6,460
- in 3 filings
- Open-market sales, last 90 days
- $2,065,250
- in 1 filing
Net −$2,058,790. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
Reading 100 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-11-02 | Conkling Lori A Director | Purchase 10b5-1 | +25 | $78.44 | $2K | 2,609 |
| 2026-10-28 | Harris Lawrence E Director | Sale | −25,000 | $82.61 | $2.1M | 148,482 |
| 2026-10-01 | Conkling Lori A Director | Purchase 10b5-1 | +25 | $85.42 | $2K | 2,584 |
| 2026-09-01 | Conkling Lori A Director | Purchase 10b5-1 | +25 | $94.53 | $2K | 2,559 |
| 2026-08-03 | Conkling Lori A Director | Purchase 10b5-1 | +25 | $87.03 | $2K | 2,534 |
| 2026-07-31 | Nemser Earl H Vice Chairman | Grant or award | +803,568 | $87.99 | $70.7M | 803,568 |
| 2026-07-01 | Conkling Lori A Director | Purchase 10b5-1 | +25 | $88.03 | $2K | 2,509 |
| 2026-06-01 | Conkling Lori A Director | Purchase 10b5-1 | +25 | $86.10 | $2K | 2,484 |
| 2026-05-08 | Brody Paul Jonathan Chief Financial Officer | Shares withheld for taxes | −82,920 | $84.42 | $7.0M | 2,856,806 |
| 2026-05-08 | Mendonca Denis Chief Accounting Officer | Shares withheld for taxes | −11,157 | $84.42 | $942K | 145,071 |
| 2026-05-08 | Galik Milan Chief Executive Officer | Shares withheld for taxes | −255,039 | $84.42 | $21.5M | 3,215,389 |
| 2026-05-08 | Frank Thomas AJ Executive Vice President | Shares withheld for taxes | −31,730 | $84.42 | $2.7M | 251,518 |
| 2026-05-08 | Nemser Earl H Vice Chairman | Shares withheld for taxes | −22,486 | $84.42 | $1.9M | 429,344 |
| 2026-05-01 | Conkling Lori A Director | Purchase 10b5-1 | +25 | $79.64 | $2K | 2,459 |
| 2026-04-28 | Harris Lawrence E Director | Sale | −26,000 | $76.93 | $2.0M | 173,482 |
| 2026-04-01 | Conkling Lori A Director | Purchase 10b5-1 | +25 | $68.38 | $2K | 2,434 |
| 2026-03-02 | Conkling Lori A Director | Purchase 10b5-1 | +25 | $69.21 | $2K | 2,409 |
| 2026-02-25 | Conkling Lori A Director | Purchase 10b5-1 | +50 | $73.21 | $4K | 2,384 |
| 2026-01-27 | Nemser Earl H Vice Chairman | Sale | −39,731 | $75.07 | $3.0M | 20,469 |
| 2026-01-27 | Nemser Earl H Vice Chairman | Sale | −20,469 | $75.75 | $1.6M | 0 |
Page 1 of 64 · 1,266 trades