Insider txns (12m)
56
Stock / equity
IBKR Interactive Brokers Group, Inc.
- Security
- Equity
- Size, estimated from filings
- Large cap ($10B – $200B)
- Insiders on record
- 11
- Members of Congress
- 1
- Latest trade on record
- October 1, 2026
IBKR (Interactive Brokers Group, Inc.) has 56 disclosed insider transactions from 11 insiders in the last 12 months (10 open-market buys, 19 sales, about $141.7M at reported prices) and 1 congressional trade from 1 member of Congress. The most recent disclosure was filed October 5, 2026.
Open-market buys / sales
10 / 19
Congress trades (12m)
1
Distinct filers (12m)
12
Share price
Price and chart by TradingView for Interactive Brokers Group, Inc.. US share prices here are delayed, not real-time. The trade records on this page come from government filings, not from this chart.
IBKR in charts
Who is trading this stock
Which people account for the buying and selling over the last 12 months?
BoughtSold
7 people account for the disclosed buying and selling in IBKR over the last 12 months; the most active is Nemser Earl H with $33M.
Prices insiders traded at
What price did insiders buy and sell at? Each marker is one open-market trade at the share price reported on its Form 4.
▲ Bought▼ SoldAverage reported price that day
Insiders reported 29 open-market trades in IBKR since Sep 29, 2025, at prices from $65.95 to $94.53; the most recent was a purchase at $85.42 on Oct 1, 2026. These are the prices on the filings, not adjusted for stock splits, and not a market price series.
Insider holdings over time
Is an insider building or unwinding a position? Shares held directly after each filing.
Conkling Lori ANemser Earl H
Conkling Lori A reported 2,584 shares held after the latest filing, against 1,556 at the first on record.
Insiders trading IBKR
Everyone who filed a Form 4 for this ticker, by number of rows on record. "Bought" and "sold" count open-market purchases (code P) and sales only; awards, option exercises and shares withheld for tax are in the row count but not in those two columns.
| Insider | Role | Rows | Bought | Sold | Value bought | Value sold | Latest |
|---|---|---|---|---|---|---|---|
| Conkling Lori A | Director | 13 | 9 | 0 | $20K | — | October 1, 2026 |
| Nemser Earl H | Vice Chairman | 13 | 0 | 9 | — | $32.6M | July 31, 2026 |
| Brody Paul Jonathan | Chief Financial Officer | 9 | 0 | 6 | — | $8.5M | May 8, 2026 |
| Harris Lawrence E | Director | 8 | 0 | 6 | — | $5.8M | April 28, 2026 |
| Galik Milan | Chief Executive Officer | 5 | 0 | 1 | — | $21.5M | May 8, 2026 |
| Bright Jill | Director | 3 | 1 | 0 | $26K | — | January 1, 2026 |
| Frank Thomas AJ | Executive Vice President | 2 | 0 | 1 | — | $2.7M | May 8, 2026 |
| Mendonca Denis | Chief Accounting Officer | 2 | 0 | 1 | — | $942K | May 8, 2026 |
| Peterffy William | Director | 2 | 0 | 0 | — | — | January 1, 2026 |
| Repetto Richard H | Director | 2 | 0 | 0 | — | — | January 1, 2026 |
| Yuen Nicole | Director | 2 | 0 | 0 | — | — | January 1, 2026 |
What kind of transactions these are 5 Form 4 codes
| Code | Meaning | Rows | Shares | Value at reported prices |
|---|---|---|---|---|
| A | Grant or award | 26 | 1,138,568 | $71.2M |
| S | Open-market sale | 19 | 502,361 | $37.9M |
| P | Open-market purchase | 10 | 650 | $46K |
| F | Shares withheld for tax | 5 | 403,332 | $34.0M |
| J | Other acquisition or disposal | 1 | 895,688 | — |
What each code means: Form 4 transaction codes.
Members of Congress trading IBKR
Members whose periodic transaction reports name this ticker. Amounts are the sums of the ranges as filed.
| Member | Seat | Trades | Bought | Sold | Range as filed | Latest |
|---|---|---|---|---|---|---|
| Lisa C. McClain | Representative (MI, District 9), Republican | 1 | 0 | 1 | $1,001–$15K | October 14, 2025 |
Insider transactions
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| Conkling Lori A | Buy P | October 1, 2026 | October 5, 2026 | 4d | 25 | $85 | $2,136 | 10b5-1 plan | Form 4 ↗ | |
| Conkling Lori A | Buy P | September 1, 2026 | September 2, 2026 | 1d | 25 | $95 | $2,363 | 10b5-1 plan | Form 4 ↗ | |
| Nemser Earl H | Other A | July 31, 2026 | August 4, 2026 | 4d | 803,568 | $88 | $70.7M | indirect | Form 4 ↗ | |
| Conkling Lori A | Buy P | August 3, 2026 | August 4, 2026 | 1d | 25 | $87 | $2,176 | 10b5-1 plan | Form 4 ↗ | |
| Conkling Lori A | Buy P | July 1, 2026 | July 1, 2026 | 0d | 25 | $88 | $2,201 | 10b5-1 plan | Form 4 ↗ | |
| Conkling Lori A | Buy P | June 1, 2026 | June 2, 2026 | 1d | 25 | $86 | $2,153 | 10b5-1 plan | Form 4 ↗ | |
| Brody Paul Jonathan | Sell F | May 8, 2026 | May 28, 2026 | 20d | 82,920 | $84 | $7.0M | late | Form 4 ↗ | |
| Mendonca Denis | Sell F | May 8, 2026 | May 28, 2026 | 20d | 11,157 | $84 | $942K | late | Form 4 ↗ | |
| Galik Milan | Sell F | May 8, 2026 | May 28, 2026 | 20d | 255,039 | $84 | $21.5M | late | Form 4 ↗ | |
| Frank Thomas AJ | Sell F | May 8, 2026 | May 28, 2026 | 20d | 31,730 | $84 | $2.7M | late | Form 4 ↗ | |
| Nemser Earl H | Sell F | May 8, 2026 | May 28, 2026 | 20d | 22,486 | $84 | $1.9M | late | Form 4 ↗ | |
| Conkling Lori A | Buy P | May 1, 2026 | May 4, 2026 | 3d | 25 | $80 | $1,991 | 10b5-1 plan | Form 4 ↗ | |
| Harris Lawrence E | Sell S | April 28, 2026 | April 29, 2026 | 1d | 26,000 | $77 | $2.0M | Form 4 ↗ | ||
| Conkling Lori A | Buy P | April 1, 2026 | April 2, 2026 | 1d | 25 | $68 | $1,710 | 10b5-1 plan | Form 4 ↗ | |
| Conkling Lori A | Buy P | March 2, 2026 | March 26, 2026 | 24d | 25 | $69 | $1,730 | late10b5-1 plan | Form 4 ↗ | |
| Conkling Lori A | Buy P | February 25, 2026 | March 26, 2026 | 29d | 50 | $73 | $3,660 | late10b5-1 plan | Form 4 ↗ | |
| Nemser Earl H | Sell S | January 27, 2026 | January 28, 2026 | 1d | 20,469 | $76 | $1.6M | indirect | Form 4 ↗ | |
| Nemser Earl H | Sell S | January 27, 2026 | January 28, 2026 | 1d | 39,731 | $75 | $3.0M | indirect | Form 4 ↗ | |
| Nemser Earl H | Sell S | January 26, 2026 | January 28, 2026 | 2d | 3,101 | $78 | $242K | indirect | Form 4 ↗ | |
| Nemser Earl H | Sell S | January 26, 2026 | January 28, 2026 | 2d | 30,817 | $77 | $2.4M | indirect | Form 4 ↗ | |
| Nemser Earl H | Sell S | January 26, 2026 | January 28, 2026 | 2d | 60,882 | $76 | $4.6M | indirect | Form 4 ↗ | |
| Nemser Earl H | Sell S | January 23, 2026 | January 26, 2026 | 3d | 60,065 | $78 | $4.7M | indirect | Form 4 ↗ | |
| Nemser Earl H | Sell S | January 23, 2026 | January 26, 2026 | 3d | 84,935 | $78 | $6.6M | indirect | Form 4 ↗ | |
| Nemser Earl H | Sell S | January 22, 2026 | January 26, 2026 | 4d | 100,000 | $77 | $7.7M | indirect | Form 4 ↗ | |
| Peterffy William | Other A | January 1, 2026 | January 26, 2026 | 25d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Nemser Earl H | Other A | January 1, 2026 | January 26, 2026 | 25d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Brody Paul Jonathan | Other A | January 1, 2026 | January 26, 2026 | 25d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Galik Milan | Other A | January 1, 2026 | January 26, 2026 | 25d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Harris Lawrence E | Other A | January 1, 2026 | January 26, 2026 | 25d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Conkling Lori A | Other A | January 1, 2026 | January 26, 2026 | 25d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Conkling Lori A | Other A | December 31, 2025 | January 26, 2026 | 26d | 389 | — | — | late | Form 4 ↗ | |
| Bright Jill | Other A | January 1, 2026 | January 26, 2026 | 25d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Yuen Nicole | Other A | January 1, 2026 | January 26, 2026 | 25d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Repetto Richard H | Other A | January 1, 2026 | January 26, 2026 | 25d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Brody Paul Jonathan | Other A | December 31, 2025 | January 7, 2026 | 7d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Brody Paul Jonathan | Other A | December 31, 2025 | January 7, 2026 | 7d | 53,452 | — | — | late | Form 4 ↗ | |
| Harris Lawrence E | Other A | December 31, 2025 | January 7, 2026 | 7d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Bright Jill | Other A | December 31, 2025 | January 7, 2026 | 7d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Galik Milan | Other A | December 31, 2025 | January 7, 2026 | 7d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Galik Milan | Other A | December 31, 2025 | January 7, 2026 | 7d | 224,650 | — | — | late | Form 4 ↗ | |
| Repetto Richard H | Other A | December 31, 2025 | January 7, 2026 | 7d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Frank Thomas AJ | Other A | December 31, 2025 | January 7, 2026 | 7d | 13,944 | — | — | late | Form 4 ↗ | |
| Nemser Earl H | Other A | December 31, 2025 | January 7, 2026 | 7d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Nemser Earl H | Other A | December 31, 2025 | January 7, 2026 | 7d | 23,240 | — | — | late | Form 4 ↗ | |
| Conkling Lori A | Other A | December 31, 2025 | January 7, 2026 | 7d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Conkling Lori A | Other A | December 31, 2025 | January 7, 2026 | 7d | 1,167 | — | — | late | Form 4 ↗ | |
| Mendonca Denis | Other A | December 31, 2025 | January 7, 2026 | 7d | 11,156 | — | — | late | Form 4 ↗ | |
| Peterffy William | Other A | December 31, 2025 | January 7, 2026 | 7d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Yuen Nicole | Other A | December 31, 2025 | January 7, 2026 | 7d | 389 | $64 | $25K | late | Form 4 ↗ | |
| Galik Milan | Other J | December 29, 2025 | December 30, 2025 | 1d | 895,688 | — | — | indirect | Form 4 ↗ | |
| Harris Lawrence E | Sell S | October 29, 2025 | October 31, 2025 | 2d | 10,645 | $69 | $735K | Form 4 ↗ | ||
| Harris Lawrence E | Sell S | October 28, 2025 | October 29, 2025 | 1d | 6,855 | $69 | $474K | Form 4 ↗ | ||
| Harris Lawrence E | Sell S | October 27, 2025 | October 29, 2025 | 2d | 7,500 | $70 | $523K | Form 4 ↗ | ||
| Bright Jill | Buy P | October 23, 2025 | October 27, 2025 | 4d | 400 | $66 | $26K | Form 4 ↗ | ||
| Harris Lawrence E | Sell S | October 24, 2025 | October 27, 2025 | 3d | 8,000 | $69 | $548K | Form 4 ↗ | ||
| Harris Lawrence E | Sell S | October 23, 2025 | October 27, 2025 | 4d | 22,000 | $68 | $1.5M | Form 4 ↗ | ||
| Brody Paul Jonathan | Sell S | September 30, 2025 | October 1, 2025 | 1d | 1,155 | $70 | $81K | 10b5-1 planindirect | Form 4 ↗ | |
| Brody Paul Jonathan | Sell S | September 30, 2025 | October 1, 2025 | 1d | 1,979 | $69 | $137K | 10b5-1 planindirect | Form 4 ↗ | |
| Brody Paul Jonathan | Sell S | September 29, 2025 | October 1, 2025 | 2d | 2,021 | $69 | $139K | 10b5-1 planindirect | Form 4 ↗ | |
| Brody Paul Jonathan | Sell S | September 29, 2025 | October 1, 2025 | 2d | 8,792 | $68 | $600K | 10b5-1 planindirect | Form 4 ↗ | |
| Brody Paul Jonathan | Sell S | September 29, 2025 | October 1, 2025 | 2d | 7,414 | $67 | $498K | 10b5-1 planindirect | Form 4 ↗ |
Congressional trades
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| Lisa C. McClain | Sell | October 14, 2025 | November 21, 2025 | 38d | — | — | $1,001–$15K | spouse | House PTR ↗ |
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Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- How to read a congressional trade report Owner tells you whose asset it was: the member, the spouse, a dependent child, or held jointly.
- Why congressional trade amounts are ranges There are ten ranges; the lowest is $1,001–$15,000 and the highest is over $50,000,000.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| House Clerk, periodic transaction reports | 1 | 1 | November 21, 2025 | November 21, 2025 | House Clerk search |
| SEC EDGAR, Form 4 | 43 | 61 | October 1, 2025 | October 5, 2026 | Form 4 list on EDGAR |
Site built October 27, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Insider rows are Form 4 filings for this issuer from SEC EDGAR; congressional rows are periodic transaction reports parsed from the House Clerk and the Senate eFD. Values use the reported price for Form 4 and the disclosed range for Congress. See methodology and corrections.
Not investment advice. Disclosures are shown as filed and may lag the trade or be amended. No recommendation is made or implied.