Interactive Brokers (NASDAQ: IBKR) insider transactions
In the twelve months to 10 November 2026, executives and directors of Interactive Brokers reported 10 open-market sales of 451,000 shares ($34.8m) and 10 open-market purchases of 275 shares ($22,080), by 3 people, according to the Form 4 filings they submitted to the SEC.
Latest transactions
| Date | Insider | Role | Transaction | Shares | Price | Held after | Filing |
|---|---|---|---|---|---|---|---|
| 2 November 2026 | Conkling Lori A | Director | Open-market purchase, 10b5-1 plan | +25 | $78.44 | 2,609 | Form 4 |
| 28 October 2026 | Harris Lawrence E | Director | Open-market sale | −25,000 | $82.61 | 148,482 | Form 4 |
| 1 October 2026 | Conkling Lori A | Director | Open-market purchase, 10b5-1 plan | +25 | $85.42 | 2,584 | Form 4 |
| 1 September 2026 | Conkling Lori A | Director | Open-market purchase | +25 | $94.53 | 2,559 | Form 4 |
| 3 August 2026 | Conkling Lori A | Director | Open-market purchase | +25 | $87.03 | 2,534 | Form 4 |
| 31 July 2026 | Nemser Earl H | Vice Chairman | Grant or award | +803,568 | $87.99 | 803,568 | Form 4 |
| 1 July 2026 | Conkling Lori A | Director | Open-market purchase | +25 | $88.03 | 2,509 | Form 4 |
| 1 June 2026 | Conkling Lori A | Director | Open-market purchase | +25 | $86.10 | 2,484 | Form 4 |
| 8 May 2026 | Nemser Earl H | Vice Chairman | Shares withheld for tax | −22,486 | $84.42 | 429,344 | Form 4 |
| 8 May 2026 | Frank Thomas AJ | Executive Vice President | Shares withheld for tax | −31,730 | $84.42 | 251,518 | Form 4 |
| 8 May 2026 | Galik Milan | Chief Executive Officer | Shares withheld for tax | −255,039 | $84.42 | 3,215,389 | Form 4 |
| 8 May 2026 | Mendonca Denis | Chief Accounting Officer | Shares withheld for tax | −11,157 | $84.42 | 145,071 | Form 4 |
| 8 May 2026 | Brody Paul Jonathan | Chief Financial Officer | Shares withheld for tax | −82,920 | $84.42 | 2,856,806 | Form 4 |
| 1 May 2026 | Conkling Lori A | Director | Open-market purchase | +25 | $79.64 | 2,459 | Form 4 |
| 28 April 2026 | Harris Lawrence E | Director | Open-market sale | −26,000 | $76.93 | 173,482 | Form 4 |
| 1 April 2026 | Conkling Lori A | Director | Open-market purchase | +25 | $68.38 | 2,434 | Form 4 |
| 2 March 2026 | Conkling Lori A | Director | Open-market purchase | +25 | $69.21 | 2,409 | Form 4 |
| 25 February 2026 | Conkling Lori A | Director | Open-market purchase | +50 | $73.21 | 2,384 | Form 4 |
| 27 January 2026 | Nemser Earl H | Vice Chairman | Open-market sale | −39,731 | $75.07 | 20,469 | Form 4 |
| 27 January 2026 | Nemser Earl H | Vice Chairman | Open-market sale | −20,469 | $75.75 | 0 | Form 4 |
Names appear as in the filing, surname first. A dash in the price column means the filing reports none, as in grants and gifts.
How to read the table
Only open-market purchases and sales are trades the insider chose to make at the market price, and they are the ones counted in the summary above. Grants, option exercises and shares withheld for tax come from pay plans. A sale marked as a 10b5-1 plan was scheduled in advance under a written plan.
Where each row comes from
From the Form 4 that each executive, director or large shareholder must file with the SEC within two business days of a transaction, read up to 10 November 2026. Each row links to its filing on EDGAR. Only transactions in shares are listed, not derivatives, and amended filings are left out. The accounts of the company are on the Interactive Brokers page; the method, in data sources.
Information prepared from the Form 4 filings submitted to the SEC, for information purposes only. It is not financial advice or a recommendation to buy or sell. Updated on 12 November 2026.