Interactive Brokers Group, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Frank Thomas AJ | Chief Information Officer | Tax Withholding | 8,127 | $119.13 | $968,170 | 68,829 | May 9, 2024 |
| Nemser Earl H | Vice Chairman | Tax Withholding | 4,419 | $119.13 | $526,435 | 104,351 | May 9, 2024 |
| Galik Milan | Chief Executive Officer | Tax Withholding | 61,995 | $119.13 | $7,385,464 | 1,253,227 | May 9, 2024 |
| Peterffy Thomas | Chairman | Other | 62,296 | $114.69 | $7,144,728 | 1,692,901 | Apr 23, 2024 |
| Nemser Earl H | Vice Chairman | Sale | 5,000 | $107.01 | $535,050 | 108,770 | Feb 21, 2024 |
| Nemser Earl H | Vice Chairman | Sale | 2,100 | $102.02 | $214,242 | 131,670 | Feb 16, 2024 |
| Nemser Earl H | Vice Chairman | Sale | 20,809 | $100.73 | $2,096,091 | 187,961 | Feb 13, 2024 |
| Frank Thomas AJ | Chief Information Officer | Sale | 995 | $94.91 | $94,435 | 76,956 | Feb 5, 2024 |
| Nemser Earl H | Vice Chairman | Sale | 24,547 | $95.67 | $2,348,411 | 210,005 | Feb 5, 2024 |
| Frank Thomas AJ | Chief Information Officer | Sale | 36,883 | $90.64 | $3,343,075 | 164,484 | Feb 2, 2024 |
| Frank Thomas AJ | Chief Information Officer | Sale | 6,987 | $90.07 | $629,319 | 202,988 | Jan 30, 2024 |
| Frank Thomas AJ | Chief Information Officer | Sale | 708 | $91.49 | $64,775 | 209,975 | Jan 26, 2024 |
| Frank Thomas AJ | Chief Information Officer | Sale | 29,200 | $91.53 | $2,672,676 | 369,524 | Jan 25, 2024 |
| Frank Thomas AJ | Chief Information Officer | Sale | 13,168 | $91.09 | $1,199,473 | 445,352 | Jan 23, 2024 |
| Frank Thomas AJ | Chief Information Officer | Sale | 90 | $89.60 | $8,064 | 495,652 | Jan 18, 2024 |
| Frank Thomas AJ | Chief Information Officer | Sale | 90 | $85.00 | $7,650 | 525,331 | Jan 16, 2024 |
| Frank Thomas AJ | Chief Information Officer | Sale | 3,071 | $88.35 | $271,323 | 551,617 | Jan 11, 2024 |
| Frank Thomas AJ | Chief Information Officer | Sale | 12,827 | $86.95 | $1,115,308 | 564,805 | Jan 9, 2024 |
| Frank Thomas AJ | Chief Information Officer | Sale | 5,690 | $86.45 | $491,901 | 598,318 | Jan 8, 2024 |
| Frank Thomas AJ | Chief Information Officer | Sale | 994 | $87.23 | $86,707 | 630,023 | Jan 3, 2024 |
| Uhde Philip | — | Award / Grant | 302 | $82.90 | $25,036 | 2,572 | Dec 31, 2023 |
| Peterffy William | — | Award / Grant | 302 | $82.90 | $25,036 | 2,195 | Dec 31, 2023 |
| Galik Milan | Chief Executive Officer | Award / Grant | 302 | $82.90 | $25,036 | 1,315,182 | Dec 31, 2023 |
| Brody Paul Jonathan | Chief Financial Officer | Award / Grant | 302 | $82.90 | $25,036 | 748,177 | Dec 31, 2023 |
| Nemser Earl H | Vice Chairman | Award / Grant | 302 | $82.90 | $25,036 | 308,770 | Dec 31, 2023 |
| Frank Thomas AJ | Chief Information Officer | Award / Grant | 15,088 | — | — | 643,212 | Dec 31, 2023 |
| Yuen Nicole | — | Award / Grant | 302 | $82.90 | $25,036 | 2,195 | Dec 31, 2023 |
| Bright Jill | — | Award / Grant | 302 | $82.90 | $25,036 | 2,199 | Dec 31, 2023 |
| Mendonca Denis | Chief Accounting Officer | Award / Grant | 7,821 | — | — | 36,951 | Dec 31, 2023 |
| Harris Lawrence E | — | Award / Grant | 302 | $82.90 | $25,036 | 63,284 | Dec 31, 2023 |
| Nemser Earl H | Vice Chairman | Gift | 800 | — | — | 293,688 | Dec 6, 2023 |
| Brody Paul Jonathan | Chief Financial Officer | Sale | 1 | $81.32 | $81 | — | Nov 7, 2023 |
| Brody Paul Jonathan | Chief Financial Officer | Sale | 9,200 | $80.27 | $738,484 | 2,201 | Nov 3, 2023 |
| Brody Paul Jonathan | Chief Financial Officer | Sale | 1,032 | $78.65 | $81,167 | 33,255 | Nov 1, 2023 |
| Brody Paul Jonathan | Chief Financial Officer | Sale | 13,153 | $80.01 | $1,052,372 | 34,287 | Oct 30, 2023 |
| Brody Paul Jonathan | Chief Financial Officer | Sale | 1,859 | $80.80 | $150,207 | 63,540 | Oct 26, 2023 |
| Brody Paul Jonathan | Chief Financial Officer | Sale | 398 | $80.17 | $31,908 | 76,687 | Oct 25, 2023 |
| Brody Paul Jonathan | Chief Financial Officer | Sale | 292 | $81.17 | $23,702 | 110,429 | Oct 23, 2023 |
| Brody Paul Jonathan | Chief Financial Officer | Sale | 122 | $83.00 | $10,126 | 123,577 | Oct 18, 2023 |
| Brody Paul Jonathan | Chief Financial Officer | Sale | 1,503 | $86.97 | $130,716 | 163,019 | Oct 17, 2023 |
| Frank Thomas AJ | Chief Information Officer | Sale | 1,445 | $86.97 | $125,672 | 641,312 | Oct 17, 2023 |
| Frank Thomas AJ | Chief Information Officer | Sale | 7,587 | $86.65 | $657,414 | 667,779 | Oct 13, 2023 |
| Brody Paul Jonathan | Chief Financial Officer | Sale | 7,450 | $86.68 | $645,766 | 189,336 | Oct 12, 2023 |
| Brody Paul Jonathan | Chief Financial Officer | Sale | 4 | $89.27 | $357 | 215,508 | Oct 11, 2023 |
| Frank Thomas AJ | Chief Information Officer | Sale | 1,446 | $88.07 | $127,349 | 680,876 | Oct 10, 2023 |
| Frank Thomas AJ | Chief Information Officer | Sale | 8,130 | $88.64 | $720,643 | 711,950 | Oct 6, 2023 |
| Brody Paul Jonathan | Chief Financial Officer | Sale | 7,944 | $88.61 | $703,918 | 233,790 | Oct 6, 2023 |
| Frank Thomas AJ | Chief Information Officer | Sale | 1,084 | $87.90 | $95,284 | 735,104 | Oct 5, 2023 |
| Brody Paul Jonathan | Chief Financial Officer | Sale | 4,846 | $86.41 | $418,743 | 263,183 | Oct 4, 2023 |
| Brody Paul Jonathan | Chief Financial Officer | Sale | 5,113 | $86.64 | $442,990 | 289,211 | Oct 2, 2023 |