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Interactive Brokers Group, Inc. (NASDAQ:IBKR)
US · Delayed Price · Currency is USD
Financial Services · Investment - Banking & Investment Services
81.39+1.11 (+1.38%)
Insider Score
––Not scored
IBKR Insider Score
Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.
IBKR Stock Insider Trading Activity
IBKR stock’s insider trading shows 6 purchases for an estimated $13.02K and 1 sale on the open market for an estimated $2.00M by company insiders over the last 6 months.
Not enough price history.
Insider Trading Activity (Form 4 Filings)
An insider trade occurs when an individual that has non-public information about a company buys or sells shares of that company’s stock. Examples of insiders include a company’s executive officers (CEO, CFO, COO), its board of directors, and its major shareholders. Insiders are required to submit their trading activity to the SEC through Form 4 filings.
Scored window · last 90 days0 qualifying buys0 insiders$6.67K bought— these are the numbers in the rankings table; the full history below shows every filing (buys, sells and older activity).
| Insider | Action | Shares | Avg Cost | Total | Δ Holdings | Held After | Date | Grade | Form 4 |
|---|---|---|---|---|---|---|---|---|---|
| Conkling Lori A Director | Buy | 25 | $85.42 | $2.14K | 1.0% | 2,584 | Oct 1, 2026 | — | Form 4 |
| Conkling Lori A Director | Buy | 25 | $94.53 | $2.36K | 1.0% | 2,559 | Sep 1, 2026 | — | Form 4 |
| Conkling Lori A Director | Buy | 25 | $87.03 | $2.18K | 1.0% | 2,534 | Aug 3, 2026 | — | Form 4 |
| Nemser Earl H Director | Award | 803,568 | $87.99 | $70.71M | New | 803,568 | Jul 31, 2026 | — | Form 4 |
| Conkling Lori A Director | Buy | 25 | $88.03 | $2.20K | 1.0% | 2,509 | Jul 1, 2026 | — | Form 4 |
| Conkling Lori A Director | Buy | 25 | $86.10 | $2.15K | 1.0% | 2,484 | Jun 1, 2026 | — | Form 4 |
| Mendonca Denis Other | Tax withheld | 11,157 | $84.42 | $941.87K | 7.1% | 145,071 | May 8, 2026 | — | Form 4 |
| Galik Milan CEO | Tax withheld | 255,039 | $84.42 | $21.53M | 7.3% | 3,215,389 | May 8, 2026 | — | Form 4 |
| Frank Thomas AJ Other | Tax withheld | 31,730 | $84.42 | $2.68M | 11.2% | 251,518 | May 8, 2026 | — | Form 4 |
| Brody Paul Jonathan CFO | Tax withheld | 82,920 | $84.42 | $7.00M | 2.8% | 2,856,806 | May 8, 2026 | — | Form 4 |
| Nemser Earl H Director | Tax withheld | 22,486 | $84.42 | $1.90M | 5.0% | 429,344 | May 8, 2026 | — | Form 4 |
| Conkling Lori A Director | Buy | 25 | $79.64 | $1.99K | 1.0% | 2,459 | May 1, 2026 | — | Form 4 |
| Harris Lawrence E Director | Sell | 26,000 | $76.93 | $2.00M | 13.0% | 173,482 | Apr 28, 2026 | — | Form 4 |
| Conkling Lori A Director | Buy | 25 | $68.38 | $1.71K | 1.0% | 2,434 | Apr 1, 2026 | — | Form 4 |
| Conkling Lori A Director | Buy | 25 | $69.21 | $1.73K | 1.0% | 2,409 | Mar 2, 2026 | — | Form 4 |
| Conkling Lori A Director | Buy | 50 | $73.21 | $3.66K | 2.1% | 2,384 | Feb 25, 2026 | — | Form 4 |
| Nemser Earl H Director | Sell | 39,731 | $75.07 | $2.98M | 66.0% | 20,469 | Jan 27, 2026 | — | Form 4 |
| Nemser Earl H Director | Sell | 20,469 | $75.75 | $1.55M | 100% | 0 | Jan 27, 2026 | — | Form 4 |
| Nemser Earl H Director | Sell | 30,817 | $76.72 | $2.36M | 32.7% | 63,301 | Jan 26, 2026 | — | Form 4 |
| Nemser Earl H Director | Sell | 3,101 | $77.98 | $241.82K | 4.9% | 60,200 | Jan 26, 2026 | — | Form 4 |
| Nemser Earl H Director | Sell | 60,882 | $75.83 | $4.62M | 39.3% | 94,118 | Jan 26, 2026 | — | Form 4 |
| Nemser Earl H Director | Sell | 84,935 | $77.65 | $6.60M | 28.3% | 215,065 | Jan 23, 2026 | — | Form 4 |
| Nemser Earl H Director | Sell | 60,065 | $78.14 | $4.69M | 27.9% | 155,000 | Jan 23, 2026 | — | Form 4 |
| Nemser Earl H Director | Sell | 100,000 | $76.81 | $7.68M | 25.0% | 300,000 | Jan 22, 2026 | — | Form 4 |
| Brody Paul Jonathan CFO | Award | 389 | $64.31 | $25.02K | 0.0% | 2,939,726 | Jan 1, 2026 | — | Form 4 |
| Yuen Nicole Director | Award | 389 | $64.31 | $25.02K | 4.0% | 10,126 | Jan 1, 2026 | — | Form 4 |
| Nemser Earl H Director | Award | 389 | $64.31 | $25.02K | 0.1% | 451,830 | Jan 1, 2026 | — | Form 4 |
What these mean— the action is the SEC’s own Form 4 transaction code. Only a buy or a sell is an open-market trade; the rest are transfers, awards and exercises, which is why they carry no price.
- Buy (P) — Open-market or private purchase
- Sell (S) — Open-market or private sale
- Award (A) — Grant or award from the company, not a purchase
- Tax withheld (F) — Shares withheld to pay tax or an exercise price
Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.