Nasdaq · CIK 0001381197
IBKR Interactive Brokers Group, Inc.
Insider trading from SEC Form 4. Last filing 9 d ago. Close $87.89 on Oct 12, 2026, +45% from the 52-week low and -10% from the high.
In brief
Interactive Brokers Group, Inc. (IBKR) has 124 SEC Form 4 filings on file from 11 insiders, the latest filed on Oct 5, 2026. In the last 90 days insiders made 3 open-market buys worth $6,675 and 0 open-market sells worth $0, net +$6,675.
63 open-market trades have been scored at IBKR. The newest: Lori A Conkling (director) bought $2,136 of stock on Oct 1, 2026, filed Oct 5, 2026, scored 0 (weak), under a 10b5-1 plan. The largest of the 50 shown: Earl H Nemser (Vice Chairman) sold $19M on Jan 22, 2026, scored 65 (notable). 2 insiders sold within 14 days of each other around Feb 15, 2024.
1 member of Congress has disclosed 4 trades in IBKR under the STOCK Act. 7 Form 144 notices of planned sales are on file, the latest filed Apr 28, 2026.
Last 90 days
Net insider value
+$6,675
more bought than sold
Buys
3
$6,675 by 1 insider
Sells
0
$0 by 0 insiders
Insiders on file
11
with a Form 4 at this company
Price and insider trades, last year
IBKROct 12, 2026 · close 87.89
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at Interactive Brokers Group, Inc., scored: the newest 50 of 63.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 0Weak | Lori A Conkling director buy | $2,136 25 shares | +1% | +41% from low-13% from high | |
| 0Weak | Lori A Conkling director buy | $2,363 25 shares | +1% | - | |
| 0Weak | Lori A Conkling director buy | $2,176 25 shares | +1% | +46% from low-10% from high | |
| 5Weak | Lori A Conkling director buy | $2,201 25 shares | +1% | +66% from low-4% from high | |
| 5Weak | Lori A Conkling director buy | $2,153 25 shares | +1% | +76% from low0% from high | |
| 5Weak | Lori A Conkling director buy | $1,991 25 shares | +1% | +86% from low-2% from high | |
| 45Moderate | Lawrence E Harris director sell | $2.0M 26,000 shares | -13% | +84% from low-5% from high | |
| 5Weak | Lori A Conkling director buy | $1,710 25 shares | +1% | +89% from low-13% from high | |
| 0Weak | Lori A Conkling director buy | $5,391 75 shares | +3% | +105% from low-6% from high | |
| 65Notable | Earl H Nemser Vice Chairman sell | $12M 155,000 shares | -100% | +110% from low-3% from high | |
| 65Notable | Earl H Nemser Vice Chairman sell | $19M 245,000 shares | -61% | +115% from low0% from high | |
| 36Weak | Lawrence E Harris director sell | $735k 10,645 shares | -5% | +92% from low-5% from high | |
| 40Moderate | Lawrence E Harris director sell | $997k 14,355 shares | -6% | +93% from low-4% from high | |
| 20Weak | Jill Bright director buy | $26k 400 shares | +4% | +87% from low-8% from high | |
| 45Moderate | Lawrence E Harris director sell | $2.0M 30,000 shares | -12% | +87% from low-8% from high | |
| 19Weak | Paul Jonathan Brody Chief Financial Officer sell | $448k 6,928 shares | -6% | +97% from low-4% from high | |
| 47Moderate | Paul Jonathan Brody Chief Financial Officer sell | $1.5M 21,361 shares | -76% | +100% from low0% from high | |
| 47Moderate | Paul Jonathan Brody Chief Financial Officer sell | $2.0M 31,354 shares | -53% | +92% from low-4% from high | |
| 37Weak | Paul Jonathan Brody Chief Financial Officer sell | $2.2M 33,416 shares | -36% | +95% from low-3% from high | |
| 37Weak | Paul Jonathan Brody Chief Financial Officer sell | $4.2M 65,895 shares | -41% | +97% from low-4% from high | |
| 47Moderate | Paul Jonathan Brody Chief Financial Officer sell | $14M 223,382 shares | -58% | +93% from low-8% from high | |
| 37Weak | Paul Jonathan Brody Chief Financial Officer sell | $12M 195,482 shares | -34% | +95% from low-8% from high | |
| 37Weak | Paul Jonathan Brody Chief Financial Officer sell | $13M 209,783 shares | -27% | +107% from low-6% from high | |
| 32Weak | Paul Jonathan Brody Chief Financial Officer sell | $13M 212,399 shares | -21% | +104% from low-8% from high | |
| 30Weak | Earl H Nemser Vice Chairman sell | $3.4M 53,900 shares | -12% | +109% from low-5% from high | |
| 35Weak | Earl H Nemser Vice Chairman sell | $14M 201,686 shares | -31% | +121% from low0% from high | |
| 25Weak | Earl H Nemser Vice Chairman sell | $1.7M 25,682 shares | -4% | +116% from low-0% from high | |
| 25Weak | Earl H Nemser Vice Chairman sell | $1.6M 25,682 shares | -4% | +109% from low-4% from high | |
| 25Weak | Earl H Nemser Vice Chairman sell | $1.6M 25,682 shares | -4% | +112% from low-2% from high | |
| 25Weak | Earl H Nemser Vice Chairman sell | $1.8M 27,482 shares | -4% | +114% from low-1% from high | |
| 25Weak | Earl H Nemser Vice Chairman sell | $2.6M 39,786 shares | -10% | +117% from low0% from high | |
| 20Weak | Earl H Nemser Vice Chairman sell | $6,590 100 shares | -0% | +114% from low-0% from high | |
| 23Weak | Jill Bright director buy | $30k 135 shares | +6% | - | |
| 25Weak | Earl H Nemser Vice Chairman sell | $1.1M 10,000 shares | -8% | +48% from low0% from high | |
| 38Weak | Earl H Nemser Vice Chairman sell | $1.6M 15,000 shares | -11% | +47% from low0% from high | |
| 43Moderate | Earl H Nemser Vice Chairman sell | $7.6M 75,000 shares | -36% | +42% from low0% from high | |
| 38Weak | Thomas AJ Frank Chief Information Officer sell | $3.8M 39,934 shares | -34% | +34% from low-1% from high | |
| 43Moderate | Earl H Nemser Vice Chairman sell | $9.6M 100,000 shares | -32% | +35% from low0% from high | |
| 38Weak | Thomas AJ Frank Chief Information Officer sell | $7.9M 84,477 shares | -42% | +28% from low-4% from high | |
| 25Weak | Thomas AJ Frank Chief Information Officer sell | $776k 8,608 shares | -4% | +26% from low-5% from high | |
| 38Weak | Thomas AJ Frank Chief Information Officer sell | $8.7M 95,790 shares | -31% | +29% from low-3% from high | |
| 33Weak | Thomas AJ Frank Chief Information Officer sell | $8.5M 92,959 shares | -23% | +29% from low-3% from high | |
| 33Weak | Thomas AJ Frank Chief Information Officer sell | $8.8M 96,928 shares | -20% | +28% from low-3% from high | |
| 20Weak | Thomas AJ Frank Chief Information Officer sell | $1.3M 14,633 shares | -3% | +25% from low-6% from high | |
| 20Weak | Thomas AJ Frank Chief Information Officer sell | $2.5M 28,325 shares | -5% | +23% from low-8% from high | |
| 20Weak | Thomas AJ Frank Chief Information Officer sell | $2.3M 26,195 shares | -5% | +23% from low-7% from high | |
| 20Weak | Thomas AJ Frank Chief Information Officer sell | $2.3M 26,015 shares | -4% | +23% from low-7% from high | |
| 20Weak | Thomas AJ Frank Chief Information Officer sell | $2.3M 26,015 shares | -4% | +24% from low-7% from high | |
| 20Weak | Thomas AJ Frank Chief Information Officer sell | $2.3M 26,377 shares | -4% | +22% from low-8% from high | |
| 34Weak | Paul Jonathan Brody Chief Financial Officer sell | $178k 2,201 shares | -100% | +18% from low-14% from high |
Planned sales
Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales
| Filed | Seller | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Apr 28, 2026 | Harris Lawrence E Director | 26,000 0.01% of outstanding | $2.0M | Apr 28, 2026 | none |
| Jan 22, 2026 | Nemser Earl H Officer, Director | 400,000 0.09% of outstanding | $30M | Jan 22, 2026 | none |
| Oct 23, 2025 | Harris Lawrence E Director | 75,000 0.02% of outstanding | $4.9M | Oct 23, 2025 | none |
| Sep 9, 2025 | Brody Paul Jonathan Officer | 1,000,000 0.22% of outstanding | $61M | Sep 9, 2025 | none |
| Aug 28, 2025 | Nemser Earl H Officer | 400,000 0.09% of outstanding | $25M | Jul 26, 2025 | $26M |
| Feb 2, 2024 | Nemser Earl H Officer | 200,000 0.19% of outstanding | $18M | Feb 2, 2024 | none |
| Dec 11, 2023 | Frank Thomas AJ Officer | 566,256 0.53% of outstanding | $46M | Dec 11, 2023 | $39M |
Congressional trades
4 trades in IBKR disclosed by members of Congress under the STOCK Act. All congressional trades.
- Lisa C. McClainHouse · R-MI · last Nov 21, 20252 bought
2 sold
| Member | Trade | Asset | Reported range | Trade / filing date | Source |
|---|---|---|---|---|---|
Lisa C. McClain House · R-MI | Sale | IBKR Interactive Brokers Group, Inc. - Class A Common Stock | $1,001 to $15k | Oct 14, 2025 / Nov 21, 2025 38 days after the trade | Clerk |
Lisa C. McClain House · R-MI | Purchase | IBKR Interactive Brokers Group, Inc. - Class A Common Stock | $1,001 to $15k | Aug 13, 2025 / Sep 12, 2025 30 days after the trade | Clerk |
Lisa C. McClain House · R-MI | Sale | IBKR Interactive Brokers Group, Inc. - Class A Common Stock | $1,001 to $15k | Jun 24, 2025 / Aug 13, 2025 50 days after the trade | Clerk |
Lisa C. McClain House · R-MI | Purchase | IBKR Interactive Brokers Group, Inc. - Class A Common Stock | $1,001 to $15k | Jun 17, 2025 / Aug 13, 2025 57 days after the trade | Clerk |
Transactions
The newest 50 of 287 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Oct 1, 2026 | Lori A Conkling director | POpen-market purchase Class A common stock10b5-1 | +25 | $85.42 | $2,136 | 2,584 | 9 d ago |
| Sep 1, 2026 | Lori A Conkling director | POpen-market purchase Class A common stock10b5-1 | +25 | $94.53 | $2,363 | 2,559 | 42 d ago |
| Aug 3, 2026 | Lori A Conkling director | POpen-market purchase Class A common stock10b5-1 | +25 | $87.03 | $2,176 | 2,534 | Aug 4, 2026 |
| Jul 31, 2026 | Earl H Nemser Vice Chairman | AGrant or award Class A common stockindirect: By EN Holdings LLC | +803,568 | $87.99 | $71M | 803,568 | Aug 4, 2026 |
| Jul 1, 2026 | Lori A Conkling director | POpen-market purchase Class A common stock10b5-1 | +25 | $88.03 | $2,201 | 2,509 | Jul 1, 2026 |
| Jun 1, 2026 | Lori A Conkling director | POpen-market purchase Class A common stock10b5-1 | +25 | $86.10 | $2,153 | 2,484 | Jun 2, 2026 |
| May 8, 2026 | Thomas AJ Frank Executive Vice President | FTax withholding Class A common stock | -31,730 | $84.42 | $2.7M | 251,518 | May 28, 2026 |
| May 8, 2026 | Milan Galik Chief Executive Officer | FTax withholding Class A common stock | -255,039 | $84.42 | $22M | 3,215,389 | May 28, 2026 |
| May 8, 2026 | Earl H Nemser Vice Chairman | FTax withholding Class A common stock | -22,486 | $84.42 | $1.9M | 429,344 | May 28, 2026 |
| May 8, 2026 | Denis Mendonca Chief Accounting Officer | FTax withholding Class A common stock | -11,157 | $84.42 | $942k | 145,071 | May 28, 2026 |
| May 8, 2026 | Paul Jonathan Brody Chief Financial Officer | FTax withholding Class A common stock | -82,920 | $84.42 | $7.0M | 2,856,806 | May 28, 2026 |
| May 1, 2026 | Lori A Conkling director | POpen-market purchase Class A common stock10b5-1 | +25 | $79.64 | $1,991 | 2,459 | May 4, 2026 |
| Apr 28, 2026 | Lawrence E Harris director | SOpen-market sale Class A common stock | -26,000 | $76.93 | $2.0M | 173,482 | Apr 29, 2026 |
| Apr 1, 2026 | Lori A Conkling director | POpen-market purchase Class A common stock10b5-1 | +25 | $68.38 | $1,710 | 2,434 | Apr 2, 2026 |
| Feb 25, 2026 | Lori A Conkling director | POpen-market purchase Class A common stock10b5-1 | +50 | $73.21 | $3,661 | 2,384 | Mar 26, 2026 |
| Mar 2, 2026 | Lori A Conkling director | POpen-market purchase Class A common stock10b5-1 | +25 | $69.21 | $1,730 | 2,409 | Mar 26, 2026 |
| Jan 26, 2026 | Earl H Nemser Vice Chairman | SOpen-market sale Class A common stockindirect: by EN Holdings LLC | -60,882 | $75.83 | $4.6M | 94,118 | Jan 28, 2026 |
| Jan 26, 2026 | Earl H Nemser Vice Chairman | SOpen-market sale Class A common stockindirect: by EN Holdings LLC | -30,817 | $76.72 | $2.4M | 63,301 | Jan 28, 2026 |
| Jan 26, 2026 | Earl H Nemser Vice Chairman | SOpen-market sale Class A common stockindirect: by EN Holdings LLC | -3,101 | $77.98 | $242k | 60,200 | Jan 28, 2026 |
| Jan 27, 2026 | Earl H Nemser Vice Chairman | SOpen-market sale Class A common stockindirect: by EN Holdings LLC | -39,731 | $75.07 | $3.0M | 20,469 | Jan 28, 2026 |
| Jan 27, 2026 | Earl H Nemser Vice Chairman | SOpen-market sale Class A common stockindirect: by EN Holdings LLC | -20,469 | $75.75 | $1.6M | 0 | Jan 28, 2026 |
| Jan 1, 2026 | Earl H Nemser Vice Chairman | AGrant or award Class A common stock | +389 | $64.31 | $25k | 451,830 | Jan 26, 2026 |
| Jan 1, 2026 | William Peterffy director | AGrant or award Class A common stock | +389 | $64.31 | $25k | 10,126 | Jan 26, 2026 |
| Dec 31, 2025 | Lori A Conkling director | AGrant or award Class A common stock | +389 | $0.00 | $0 | 1,945 | Jan 26, 2026 |
| Jan 22, 2026 | Earl H Nemser Vice Chairman | SOpen-market sale Class A common stockindirect: by EN Holdings LLC | -100,000 | $76.81 | $7.7M | 300,000 | Jan 26, 2026 |
| Jan 1, 2026 | Jill Bright director | AGrant or award Class A common stock | +389 | $64.31 | $25k | 11,082 | Jan 26, 2026 |
| Jan 1, 2026 | Paul Jonathan Brody Chief Financial Officer | AGrant or award Class A common stock | +389 | $64.31 | $25k | 2,939,726 | Jan 26, 2026 |
| Jan 1, 2026 | Milan Galik Chief Executive Officer | AGrant or award Class A common stock | +389 | $64.31 | $25k | 3,470,428 | Jan 26, 2026 |
| Jan 1, 2026 | Lawrence E Harris director | AGrant or award Class A common stock | +389 | $64.31 | $25k | 199,482 | Jan 26, 2026 |
| Jan 1, 2026 | Richard H Repetto director | AGrant or award Class A common stock | +389 | $64.31 | $25k | 3,046 | Jan 26, 2026 |
| Jan 1, 2026 | Nicole Yuen director | AGrant or award Class A common stock | +389 | $64.31 | $25k | 10,126 | Jan 26, 2026 |
| Jan 23, 2026 | Earl H Nemser Vice Chairman | SOpen-market sale Class A common stockindirect: by EN Holdings LLC | -84,935 | $77.65 | $6.6M | 215,065 | Jan 26, 2026 |
| Jan 1, 2026 | Lori A Conkling director | AGrant or award Class A common stock | +389 | $64.31 | $25k | 2,334 | Jan 26, 2026 |
| Jan 23, 2026 | Earl H Nemser Vice Chairman | SOpen-market sale Class A common stockindirect: by EN Holdings LLC | -60,065 | $78.14 | $4.7M | 155,000 | Jan 26, 2026 |
| Dec 31, 2025 | Jill Bright director | AGrant or award Class A common stock | +389 | $64.31 | $25k | 10,693 | Jan 7, 2026 |
| Dec 31, 2025 | Paul Jonathan Brody Chief Financial Officer | AGrant or award Class A common stock | +53,452 | $0.00 | $0 | 2,938,948 | Jan 7, 2026 |
| Dec 31, 2025 | Lori A Conkling director | AGrant or award Class A common stock | +1,167 | $0.00 | $0 | 1,167 | Jan 7, 2026 |
| Dec 31, 2025 | Thomas AJ Frank Executive Vice President | AGrant or award Class A common stock | +13,944 | $0.00 | $0 | 283,248 | Jan 7, 2026 |
| Dec 31, 2025 | Milan Galik Chief Executive Officer | AGrant or award Class A common stock | +224,650 | $0.00 | $0 | 3,469,650 | Jan 7, 2026 |
| Dec 31, 2025 | Lawrence E Harris director | AGrant or award Class A common stock | +389 | $64.31 | $25k | 199,093 | Jan 7, 2026 |
| Dec 31, 2025 | William Peterffy director | AGrant or award Class A common stock | +389 | $64.31 | $25k | 9,737 | Jan 7, 2026 |
| Dec 31, 2025 | Nicole Yuen director | AGrant or award Class A common stock | +389 | $64.31 | $25k | 9,737 | Jan 7, 2026 |
| Dec 31, 2025 | Denis Mendonca Chief Accounting Officer | AGrant or award Class A common stock | +11,156 | $0.00 | $0 | 156,228 | Jan 7, 2026 |
| Dec 31, 2025 | Earl H Nemser Vice Chairman | AGrant or award Class A common stock | +23,240 | $0.00 | $0 | 451,052 | Jan 7, 2026 |
| Dec 31, 2025 | Richard H Repetto director | AGrant or award Class A common stock | +389 | $64.31 | $25k | 2,657 | Jan 7, 2026 |
| Dec 31, 2025 | Paul Jonathan Brody Chief Financial Officer | AGrant or award Class A common stock | +389 | $64.31 | $25k | 2,939,337 | Jan 7, 2026 |
| Dec 31, 2025 | Lori A Conkling director | AGrant or award Class A common stock | +389 | $64.31 | $25k | 1,556 | Jan 7, 2026 |
| Dec 31, 2025 | Milan Galik Chief Executive Officer | AGrant or award Class A common stock | +389 | $64.31 | $25k | 3,470,039 | Jan 7, 2026 |
| Dec 31, 2025 | Earl H Nemser Vice Chairman | AGrant or award Class A common stock | +389 | $64.31 | $25k | 451,441 | Jan 7, 2026 |
| Dec 29, 2025 | Milan Galik Chief Executive Officer | JOther Class A common stockindirect: Immediate Family Member | -895,688 | $0.00 | $0 | 0 | Dec 30, 2025 |
50 of 287 rows shown.
Insiders
Everyone who has filed a Form 4 here.
- Jill Brightdirector
- Paul Jonathan BrodyChief Financial Officer
- Lori A Conklingdirector
- Thomas AJ FrankChief Information Officer
- Milan GalikChief Executive Officer
- Lawrence E Harrisdirector
- Denis MendoncaChief Accounting Officer
- Earl H NemserVice Chairman
- William Peterffydirector
- Richard H Repettodirector
- Nicole Yuendirector
Questions about IBKR
Answered from the filings on this page, as of the latest one.
Are insiders buying IBKR?
As of Oct 5, 2026, SEC Form 4 filings show 3 open-market buys worth $6,675 by 1 insider and 0 open-market sells worth $0 by 0 insiders at Interactive Brokers Group, Inc. in the last 90 days, net +$6,675. Only purchases (code P) and sales (code S) count; grants, option exercises and tax withholding do not.
Who was the last insider to trade IBKR on the open market?
Lori A Conkling (director) bought $2,136 of IBKR on Oct 1, 2026 and filed the Form 4 on Oct 5, 2026. InsiderTell scored 0 (weak), under a 10b5-1 plan.
How many insiders file Form 4 at Interactive Brokers Group, Inc.?
11 people have filed a Form 4 at Interactive Brokers Group, Inc., among them Jill Bright (director), Paul Jonathan Brody (Chief Financial Officer), Lori A Conkling (director). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.